WO2021075503A1 - ポリカーボネートジオール組成物 - Google Patents
ポリカーボネートジオール組成物 Download PDFInfo
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- WO2021075503A1 WO2021075503A1 PCT/JP2020/038939 JP2020038939W WO2021075503A1 WO 2021075503 A1 WO2021075503 A1 WO 2021075503A1 JP 2020038939 W JP2020038939 W JP 2020038939W WO 2021075503 A1 WO2021075503 A1 WO 2021075503A1
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- Prior art keywords
- polycarbonate diol
- general formula
- polycarbonate
- diol composition
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- MGWAGIQQTULHGU-UHFFFAOYSA-N CCC(CC)CN Chemical compound CCC(CC)CN MGWAGIQQTULHGU-UHFFFAOYSA-N 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/4009—Two or more macromolecular compounds not provided for in one single group of groups C08G18/42 - C08G18/64
- C08G18/4018—Mixtures of compounds of group C08G18/42 with compounds of group C08G18/48
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G18/44—Polycarbonates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4825—Polyethers containing two hydroxy groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4854—Polyethers containing oxyalkylene groups having four carbon atoms in the alkylene group
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
- C08G18/7657—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
- C08G18/7664—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
- C08G18/7671—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups containing only one alkylene bisphenyl group
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G64/00—Macromolecular compounds obtained by reactions forming a carbonic ester link in the main chain of the macromolecule
- C08G64/18—Block or graft polymers
- C08G64/183—Block or graft polymers containing polyether sequences
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G64/00—Macromolecular compounds obtained by reactions forming a carbonic ester link in the main chain of the macromolecule
- C08G64/20—General preparatory processes
- C08G64/30—General preparatory processes using carbonates
- C08G64/305—General preparatory processes using carbonates and alcohols
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/06—Polyurethanes from polyesters
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/08—Polyurethanes from polyethers
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
- D06N3/14—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
- D06N3/146—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes characterised by the macromolecular diols used
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2211/00—Specially adapted uses
- D06N2211/12—Decorative or sun protection articles
- D06N2211/26—Vehicles, transportation
- D06N2211/263—Cars
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2211/00—Specially adapted uses
- D06N2211/12—Decorative or sun protection articles
- D06N2211/28—Artificial leather
Definitions
- the present invention relates to a polycarbonate diol composition.
- polyurethane resin has been used in a wide range of fields such as synthetic leather, artificial leather, adhesives, furniture paints, and automobile paints.
- polyethers, polyesters, and polycarbonates are used as polyol components that react with isocyanates.
- resistance of polyurethane resins such as heat resistance, weather resistance, hydrolysis resistance, solvent resistance, sunscreen resistance, and scratch resistance.
- Non-Patent Document 1 generally, a polyether polyol has a low viscosity as a polyol component. Therefore, polyurethane using a polyether polyol is said to be excellent in flexibility and hydrolysis resistance, but inferior in heat resistance and weather resistance. Further, although polyurethane using a polyester polyol has improved heat resistance and weather resistance, it is inferior in hydrolysis resistance. On the other hand, polyurethane using polycarbonate polyol is considered to be the best durability grade in terms of durability such as heat resistance, chemical resistance and hydrolysis resistance.
- Patent Document 1 discloses a method for economically and easily producing a copolymerized polycarbonate diol.
- Patent Document 2 discloses a polycarbonate diol / polyether block copolymer.
- the polycarbonate polyol has a high viscosity and requires a large amount of solvent during the production of paints and polyurethanes, and even the polyurethane resins using the polycarbonate diols described in Patent Documents 1 and 2 have low temperature flexibility and durability. There is room for improvement in applications where the required physical properties are strict.
- the present invention has been made in view of the above circumstances, can reduce the amount of solvent used in the production of paints and polyurethanes, has excellent low-temperature flexibility, and has olein acidity resistance and moisture heat resistance. It is an object of the present invention to provide a polycarbonate diol composition capable of obtaining an excellent polyurethane and a coating composition having excellent film forming property even if the solid content concentration is high.
- a polycarbonate diol composition containing a specific structure and having a melt viscosity at 50 ° C. in a specific range is the amount of solvent used in the production of paints and polyurethanes. It is possible to obtain a polyurethane having excellent low temperature flexibility, olein acidity resistance and moisture heat resistance, and a coating composition having excellent film forming property even if the solid content concentration is high. We found that we could do it, and completed the present invention.
- the present invention includes the following aspects.
- It contains a polycarbonate diol having a structure represented by the following general formula (I) and a polycarbonate structure represented by the following general formula (II), and has a melt viscosity at 50 ° C. of 1000 to 10000 mPa ⁇ s.
- R 11 is a divalent linear, branched or cyclic aliphatic hydrocarbon group having 2 or more and 20 or less carbon atoms, or an aromatic hydrocarbon group. R 11 may be the same as or different from each other.
- N 11 is an arbitrary integer.
- R 21 is a divalent linear, branched or cyclic aliphatic hydrocarbon group having 2 or more and 15 or less carbon atoms, or an aromatic hydrocarbon group. R 21 may be the same as or different from each other. N 21 is an arbitrary integer.
- At least 2 of the polycarbonate diols are selected from the group consisting of divalent linear and branched aliphatic hydrocarbon groups having R 21 having 2 or more and 15 or less carbon atoms in the general formula (II).
- the structure in which R 11 in the general formula (I) is a linear and / or branched chain-shaped divalent aliphatic hydrocarbon group having 3 carbon atoms is represented by the general formula (I).
- the content of the structure represented by the general formula (I) is 5% by mass or more with respect to the total mass of the structure represented by the general formula (I) and the polycarbonate structure represented by the general formula (II).
- the polycarbonate diol composition of the present invention it is possible to reduce the amount of solvent used in the production of paints and polyurethanes, and it is possible to obtain polyurethanes having excellent low temperature flexibility, olein acidity resistance and moisture heat resistance. It is possible to obtain a coating composition having excellent film-forming properties even if the solid content concentration is high.
- the present embodiment a mode for carrying out the present invention (hereinafter, referred to as “the present embodiment”) will be described in detail.
- the present invention is not limited to the following description, and can be modified in various ways within the scope of the gist thereof.
- the polycarbonate diol composition of the present embodiment has a structure represented by the following general formula (I) (hereinafter, may be referred to as “structure (I)”) and the following general formula (II) in the molecular chain. It contains a polycarbonate diol having a represented polycarbonate structure (hereinafter, may be referred to as “polycarbonate structure (II)”), and the average value of the number of repetitions n11 in the following general formula (I) is 12 or more.
- R 11 is a divalent linear, branched or cyclic aliphatic hydrocarbon group having 2 or more and 20 or less carbon atoms, or an aromatic hydrocarbon group.
- R 11 may be the same as or different from each other.
- N 11 is an arbitrary integer.
- R 21 is a divalent linear, branched or cyclic aliphatic hydrocarbon group having 2 or more and 15 or less carbon atoms, or an aromatic hydrocarbon group. R 21 may be the same as or different from each other. N 21 is an arbitrary integer.
- the content of the structure (I) is preferably 5% by mass or more and 40% by mass or less, preferably 10% by mass, based on the total mass of the structure (I) and the polycarbonate structure (II). More preferably 35% by mass or less.
- the content of the structure (I) is at least the above lower limit value, the viscosity of the polycarbonate diol composition tends to be low. Further, when the content of the structure (I) is not more than the above upper limit value, polyurethane having excellent durability such as chemical resistance and moisture heat resistance can be obtained, which is preferable.
- the terminal structure of the structure (I) is a terminal structure in which one end is bonded to a carbonate group and the other end is bonded to a hydroxyl group, or both ends are bonded to a carbonate group. It is a bonded terminal structure or a terminal structure in which both ends are bonded to a hydroxyl group.
- the terminal structure of the structure (I) includes a terminal structure in which one end is bonded to a carbonate group and the other end is bonded to a hydroxyl group, and both ends are carbonate groups. It may be a mixture with the terminal structure attached to.
- R 11 is a divalent linear, branched or cyclic aliphatic hydrocarbon group having 2 or more and 20 or less carbon atoms, or an aromatic hydrocarbon group.
- a plurality of R 11s may be the same as each other or may be different from each other.
- the divalent linear aliphatic hydrocarbon group in R 11 has 2 or more and 20 or less carbon atoms, preferably 2 or more and 12 or less, and more preferably 2 or more and 6 or less.
- divalent linear aliphatic hydrocarbon group in R 11 are not particularly limited, but for example, an ethylene group, a trimethylene group, a tetramethylene group, a pentamethylene group, a hexamethylene group, a heptylene group and an octylene group. And so on.
- the divalent branched-chain aliphatic hydrocarbon group in R 11 has 3 or more and 20 or less carbon atoms, preferably 3 or more and 12 or less, and more preferably 3 or more and 6 or less.
- divalent branched chain aliphatic hydrocarbon group in R 11 are not particularly limited, but for example, an isopropylene group, an isobutylene group, a tert-butylene group, an isopentylene group, and a 2,2-dimethyltrimethylene group. , Isohexylene group, isoheptyrene group, isooctylene group and the like.
- the divalent cyclic aliphatic hydrocarbon group in R 11 has 6 or more and 20 or less carbon atoms, preferably 6 or more and 12 or less, and more preferably 6 or more and 8 or less.
- divalent cyclic aliphatic hydrocarbon group in R 11 are not particularly limited, and examples thereof include a cyclobutylene group, a cyclopentylene group, a cyclohexylene group, and a cycloheptylene group.
- the divalent aromatic hydrocarbon group in R 11 has 6 or more and 15 or less carbon atoms, preferably 6 or more and 12 or less, and more preferably 6 or more and 10 or less.
- divalent aromatic hydrocarbon group in R 11 are not particularly limited, and examples thereof include a phenylene group and a naphthylene group.
- R 11 a divalent linear, branched, or cyclic aliphatic hydrocarbon group (that is, an alkylene group) having 2 or more and 20 or less carbon atoms is preferable, and a divalent group having 2 or more and 6 or less carbon atoms is preferable. , And / or a divalent branched chain aliphatic hydrocarbon group having 3 or more and 6 or less carbon atoms is more preferable.
- R 11 contains a divalent branched-chain aliphatic hydrocarbon group, a polyurethane having further excellent low temperature characteristics and durability such as chemical resistance and moisture heat resistance tends to be obtained.
- R 11 in the general formula (I) is a linear and / or branched chain-shaped divalent aliphatic hydrocarbon group having 3 carbon atoms
- R 11 is a linear and / or branched chain-like divalent aliphatic hydrocarbon group having 3 carbon atoms.
- the proportion of the structure in which R 11 in the general formula (I) in the polycarbonate diol is a linear and / or branched chain divalent aliphatic hydrocarbon group having 3 carbon atoms is as follows. It can be obtained by the method. The sample is dissolved in deuterated chloroform (manufactured by Aldrich) to obtain a 3% by weight / vol% solution. Tetramethylsilane (TMS) is added to the solution as a chemical shift reference, and 1 H-NMR is measured for the obtained solution using JNM-ECA500 manufactured by JEOL Ltd.
- TMS Tetramethylsilane
- the resonance frequency was 500 MHz
- the number of integrations was 128,
- the TMS signal was 0 ppm, and a 1 H-NMR spectrum was obtained. From the spectrum, a linear and / or branched chain-shaped divalent fat having 3 carbon atoms was obtained. The proportion of the structure that is a group hydrocarbon group can be determined.
- n11 represents the number of repetitions of the structure (-R 11-O-).
- n11 is an arbitrary integer, but the average value of n11 in the entire polycarbonate diol composition of the present embodiment is 12 or more, preferably 12 or more and 70 or less, and 12 or more and 60. The following range is more preferable, and the range of 15 or more and 50 or less is particularly preferable.
- n11 in the entire polycarbonate diol composition of the present embodiment When the average value of n11 in the entire polycarbonate diol composition of the present embodiment is equal to or higher than the above lower limit value, more excellent polyurethane tends to be obtained due to its flexibility and low temperature flexibility. Further, when the average value of n11 in the entire polycarbonate diol composition of the present embodiment is not more than the above upper limit value, the viscosity of the polycarbonate diol composition tends to be lower.
- n11 can be obtained by alkali-decomposing the polycarbonate diol composition to extract the raw material diol component, and performing GC-MS measurement, LC-MS measurement and gel permeation chromatography (GPC) measurement on the component. Specifically, it can be obtained by the method described in Examples described later.
- the structure (I) is preferably a polyoxyalkylene structure.
- the preferable oxyalkylene group contained in the structure (I) are not particularly limited, but for example, an oxyethylene group, an oxy1-methylethylene group, an oxytetramethylene group, an oxy2,2-dimethyltrimethylene group and the like. Can be mentioned. Among them, a structure containing an oxy1-methylethylene group is preferable, and an oxy1-methylethylene group and an oxyethylene group are particularly preferable. Since the preferable oxyalkylene group contained in the structure (I) has the above structure, the polycarbonate diol composition becomes liquid at room temperature due to the introduction of the side chain methyl group, and is excellent in workability. It tends to be rich in characteristics.
- the amount of the oxy1-methylethylene group is 60% by mass or more and 95% by mass or less, and oxy It is preferable that the ethylene group is contained in an amount of 5% by mass or more and 40% by mass or less.
- the ratio of oxy1-methylethylene groups to the total mass of the structure (I) is at least the above lower limit value, the low temperature characteristics of polyurethane are excellent, and when it is at least the above upper limit value, a polyurethane film is formed. Tends to have excellent breaking strength.
- the content of the polycarbonate structure (II) is preferably 60% by mass or more and 95% by mass or less, preferably 65% by mass, with respect to the total mass of the structure (I) and the polycarbonate structure (II). % Or more and 90% by mass or less are more preferable.
- the content of the polycarbonate structure (II) is at least the above lower limit value, polyurethane having excellent moisture resistance, chemical resistance, etc. can be obtained. Further, when the content of the polycarbonate structure (II) is not more than the above upper limit value, the viscosity of the polycarbonate diol composition tends to be lower.
- R 21 is a divalent linear, branched or cyclic aliphatic hydrocarbon group having 2 or more and 15 or less carbon atoms, or an aromatic hydrocarbon group.
- the plurality of R 21s may be the same as each other or may be different from each other.
- the divalent linear aliphatic hydrocarbon group in R 21 has 2 or more and 15 or less carbon atoms, preferably 3 or more and 12 or less, and more preferably 3 or more and 10 or less.
- divalent linear aliphatic hydrocarbon group having 2 or more and 15 or less carbon atoms in R 21 are the same as those exemplified in R 11 above. Of these, a butylene group, a pentylene group or a hexylene group is preferable from the viewpoint of versatility.
- the divalent branched-chain aliphatic hydrocarbon group in R 21 has 3 or more and 15 or less carbon atoms, preferably 3 or more and 12 or less, and more preferably 3 or more and 10 or less.
- divalent branched chain aliphatic hydrocarbon group having 2 or more and 15 or less carbon atoms in R 21 are the same as those exemplified in R 11 above. Of these, an isopentylene group or an isohexylene group is preferable from the viewpoint of versatility.
- the divalent cyclic aliphatic hydrocarbon group in R 21 has 3 or more and 15 or less carbon atoms, preferably 6 or more and 15 or less, and more preferably 6 or more and 10 or less.
- divalent cyclic aliphatic hydrocarbon group in R 21 include those similar to those exemplified in R 11 above. Of these, a cyclohexylene group is preferable from the viewpoint of versatility.
- the divalent aromatic hydrocarbon group in R 21 has 6 or more and 15 or less carbon atoms, preferably 6 or more and 12 or less, and more preferably 6 or more and 10 or less.
- divalent aromatic hydrocarbon group in R 21 include those similar to those exemplified in R 11 above.
- R 21 a divalent linear aliphatic hydrocarbon group having 3 or more and 10 or less carbon atoms or a divalent branched chain aliphatic hydrocarbon group having 3 or more and 10 or less carbon atoms is preferable, and carbon is preferable.
- a divalent linear aliphatic hydrocarbon group having a number of 4 or more and 6 or less is more preferable, and a divalent linear aliphatic hydrocarbon group of a butylene group and a hexylene group is even more preferable.
- the polycarbonate diol composition of the present embodiment at least a part of the polycarbonate diol is a divalent linear or branched aliphatic aliphatic having R 21 of 2 or more and 15 or less carbon atoms in the general formula (II). It is preferably at least two or more selected from the group consisting of hydrocarbon groups. In this case, there is a tendency to obtain a polycarbonate diol composition that is liquid at room temperature.
- the composition of R 21 in the general formula (II) in the polycarbonate diol can be determined by the following method.
- n21 represents the number of repetitions of the carbonate structure (-R 21- O-CO-O-).
- n21 is an arbitrary integer
- the average value of n21 in the entire polycarbonate diol composition of the present embodiment is preferably in the range of 1 or more and 50 or less, more preferably in the range of 2 or more and 50 or less, and in the range of 3 or more and 30 or less. Is more preferable, and a range of 4 or more and 20 or less is particularly preferable.
- N21 can be obtained by alkali-decomposing the polycarbonate diol composition to take out the raw material diol component, and performing GC-MS measurement, LC-MS measurement and GPC measurement on the component. Specifically, it can be obtained by the method described in Examples described later.
- the content of the structure represented by the general formula (I) and the content of the polycarbonate structure (II) are measured by, for example, the methods shown in the following (1) to (4). can do.
- the polycarbonate diol composition is alkaline hydrolyzed in an ethanolic potassium hydroxide solution to regenerate the diol component.
- (3) The precipitated salt is filtered off, and the filtrate is measured by gel permeation chromatography (hereinafter, may be abbreviated as GPC).
- GPC gel permeation chromatography
- the mass of the diol having hydroxyl groups at both ends of the structure represented by the general formula (I) is calculated from the concentration, and the value obtained by dividing by the mass of the polycarbonate diol composition used for the alkali hydrolysis is the general formula (I). It is the content of the diol in which both ends of the represented structure are hydroxyl groups.
- one end is bonded to a carbonate group (—O—CO—O—) and the other end is a hydroxyl group ( ⁇ O—CO—O—).
- a terminal structure bonded to OH a terminal structure in which both ends are bonded to a carbonate group (-O-CO-O-), or a terminal structure in which both ends are bonded to a hydroxyl group (-OH). is there.
- both ends of the molecule having the structure represented by the general formula (I) in the polycarbonate diol composition are hydroxyl groups.
- the molecule having a polycarbonate structure contained in the polycarbonate diol composition has hydroxyl groups at both ends thereof. That is, the molecule having a polycarbonate structure contained in the polycarbonate diol composition is a polycarbonate diol. Urethaneization reaction rate and state due to impurities in various raw materials used for the production of the polycarbonate diol composition, the terminal structure produced as a by-product during the production of the polycarbonate diol composition, or in the intended use of the polycarbonate diol composition. For control, a part of the terminal hydroxyl group may be converted into an alkyl group or an aryl group that does not react with the isocyanate group.
- the terminal group of the polycarbonate diol includes a case where strictly 100 mol% of both ends are not hydroxyl groups. From this point of view, the ratio of the hydroxyl group to the total molar amount of the terminal group is preferably 90 mol% or more, more preferably 95 mol% or more.
- both ends of the polycarbonate diol contained in the polycarbonate diol composition can be confirmed, for example, based on the method for measuring the primary terminal OH ratio described in Japanese Patent No. 3874664 (Reference 1).
- a solvent such as tetrahydrofuran, acetone, or methanol can be used in addition to ethanol.
- melt viscosity at 50 ° C The melt viscosity at 50 ° C. (hereinafter, simply referred to as “melt viscosity at 50 ° C.”) of the polycarbonate diol composition of the present embodiment measured with an E-type viscometer is 1000 to 10000 mPa ⁇ s, preferably 2000 to 9600 mPa ⁇ s. 2500 to 9600 mPa ⁇ s is more preferable.
- melt viscosity By setting the melt viscosity at 50 ° C. to the above lower limit value or more, when forming a coating film with a paint film or polyurethane using the polycarbonate diol composition of the present embodiment, there is a tendency to suppress cissing and surface irregularities. Excellent membranous properties.
- melt viscosity By setting the melt viscosity at 50 ° C. to the above upper limit value or less, it is possible to reduce the amount of solvent used in the production of paints and polyurethanes.
- repelency refers to, for example, a phenomenon such as water repellency in which paint is repelled on the surface of a base material.
- the method for controlling the melt viscosity at 50 ° C. within the above range is not particularly limited, but for example, the ratio of the structure represented by the general formula (I) and the polycarbonate structure (II) and the number average molecular weight of the polycarbonate diol composition are adjusted. It is achievable.
- the number average molecular weight of the polycarbonate diol composition used in this embodiment is preferably 300 or more and 10000 or less, more preferably 400 or more and 10000 or less, and further preferably 850 or more and 3000 or less.
- the melt viscosity at 50 ° C. is high, but the flexibility when made into polyurethane tends to be good, and the number of polycarbonate diol compositions used in the present embodiment.
- the melt viscosity at 50 ° C. is low, but the urethane bond amount is increased, so that the flexibility tends to be poor.
- the number average molecular weight can be calculated from the hydroxyl value of the polycarbonate diol composition by using the method described in Examples described later.
- the glass transition temperature (Tg) measured by a differential scanning calorimeter is preferably ⁇ 50 ° C. or lower, preferably ⁇ 55 ° C.
- the temperature is more preferably ⁇ 57 ° C. or lower, and more preferably ⁇ 57 ° C. or higher.
- Tg glass transition temperature
- the lower limit of the glass transition temperature (Tg) of the polycarbonate diol composition of the present embodiment is not particularly limited, but is, for example, ⁇ 90 ° C.
- the method for obtaining a polycarbonate diol composition having a glass transition temperature (Tg) in the above range is not particularly limited, but for example, the structure represented by the general formula (I), the ratio and type of the polycarbonate structure (II), and the number average molecular weight. There is a method of adjusting by comprehensively considering the conditions such as.
- the polycarbonate diol composition of the present embodiment is preferably liquid and transparent in properties at 23 ° C. Since the polycarbonate diol composition of the present embodiment is liquid and transparent at 23 ° C., which is a normal temperature, when it is used as a constituent component of a paint, it is less likely to become cloudy even when used in a transparent paint, so its use is limited. Is rare.
- the method for obtaining a polycarbonate diol composition having liquid and transparent properties at 23 ° C. is not particularly limited, and examples thereof include a method of appropriately selecting the type and amount of the raw material of the polycarbonate diol composition.
- the evaluation of transparency is not particularly limited, but can be measured by, for example, a turbidity meter based on an integrating sphere-type photoelectric luminous intensity method.
- the polycarbonate diol composition of the present embodiment includes an ether diol represented by the following general formula (I-1) (hereinafter, may be referred to as “ether diol (I-1)”) and the following general formula (II-). It can be obtained by carrying out an ester exchange reaction with a polycarbonate diol represented by 1) (hereinafter, may be referred to as "polycarbonate diol (II-1)").
- ether diol (I-1) ether diol represented by 1
- polycarbonate diol (II-1) polycarbonate diol
- R 111 is the same as the above R 11.
- n111 is the same as the above n 11.
- R 211 and R 212 are the same as the above R 21 , respectively.
- N 211 is the same as the above n 21.
- the ether diol (I-1) used in the production of the polycarbonate diol composition of the present embodiment may have a structure represented by the above general formula (I-1).
- the ether diol (I-1) a polyoxyalkylene diol having primary hydroxyl groups at both ends is preferable.
- the ether diol (I-1) products having various molecular weights are commercially available, and such commercially available products can also be used.
- ether diols (I-1) include, for example, the "New Pole” series manufactured by Sanyo Chemical Industries, Ltd., the “Prime Pole” series, the “Sanniks” series, and the “Pronon” manufactured by NOF Corporation. Examples thereof include polyoxyalkylene diols such as the series, "Preminol” and “Exenol” series manufactured by AGC Corporation, and "PTMG” series manufactured by Mitsubishi Chemical Corporation.
- the number average molecular weight of the ether diol (I-1) is not particularly limited, but is preferably 400 or more and 3000 or less, and more preferably 600 or more and 2000 or less.
- the number average molecular weight of the ether diol (I-1) used in the production is at least the above lower limit value, the amount of the raw material ether diol (I-1) used can be further reduced. Further, the moisture and heat resistance and chemical resistance of the polyurethane obtained from the polycarbonate diol composition of the present embodiment tend to be further improved.
- the number average molecular weight of the ether diol (I-1) used in the production is not more than the above upper limit value, the crystallinity of the polycarbonate diol composition of the present embodiment tends to be further suppressed.
- the polycarbonate diol (II-1) used in the production of the polycarbonate diol composition of the present embodiment may have a structure represented by the above general formula (II-1).
- the method for producing the polycarbonate diol (II-1) is not particularly limited, and a known method can also be adopted. For example, a carbonate compound and a diol compound can be reacted in the presence of a transesterification catalyst to obtain a polycarbonate diol (II-1).
- the carbonate compound used for producing the polycarbonate diol (II-1) is not limited to the following, and examples thereof include alkylene carbonate, dialkyl carbonate, and diaryl carbonate.
- the alkylene carbonate is not particularly limited, and examples thereof include ethylene carbonate, trimethylene carbonate, 1,2-propylene carbonate, 1,2-butylene carbonate, 1,3-butylene carbonate, 1,2-pentylene carbonate and the like. Be done.
- the dialkyl carbonate is not particularly limited, and examples thereof include dimethyl carbonate, diethyl carbonate, dipropyl carbonate, and dibutyl carbonate.
- the diaryl carbonate is not particularly limited, and examples thereof include diphenyl carbonate and the like.
- alkylene carbonate is preferable, and ethylene carbonate is more preferable.
- the diol compound used for producing the polycarbonate diol (II-1) is not limited to the following, and examples thereof include linear diols, branched chain diols, cyclic diols, and diols having an aromatic ring.
- the linear diol is not particularly limited, and is, for example, ethylene glycol, 1,3-propanediol, 1,4-butanediol, 1,5-pentanediol, 1,6-hexanediol, and 1,7-heptane.
- Examples thereof include diols, 1,8-octanediols, 1,9-nanodiols, 1,10-decanediols, 1,11-undecanediols, and 1,12-dodecanediols.
- the branched chain diol is not particularly limited, and is, for example, 2-methyl-1,8-octanediol, neopentyl glycol, 2-ethyl-1,6-hexanediol, 2-methyl-1,3-propanediol. , 3-Methyl-1,5-pentanediol, 2,4-dimethyl-1,5-pentanediol, 2,4-diethyl-1,5-pentanediol and the like.
- the cyclic diol is not particularly limited, and examples thereof include 1,3-cyclohexanediol, 1,4-cyclohexanediol, 1,4-cyclohexanedimethanol, and 2-bis (4-hydroxycyclohexyl) -propane.
- the diol having an aromatic ring is not particularly limited, but for example, p-xylenediol, p-tetrachloroxylenediol, 1,4-bis (hydroxyethoxy) benzene, 2,2-bis [(4-hydroxyethoxy)). Phenyl] Propane and the like can be mentioned.
- a linear diol or a branched chain diol having 3 or more and 10 or less carbon atoms is preferable, 1,4-butanediol, 1,5-pentanediol or 1,6-hexanediol is more preferable, and 1,4-butanediol is more preferable.
- Diol, 1,6-hexanediol is even more preferred.
- a transesterification reaction catalyst can be used in the production of the raw material polycarbonate diol (II-1).
- the catalyst can be selected from ordinary transesterification reaction catalysts.
- the transesterification reaction catalyst is not particularly limited, and examples thereof include alkali metals and alkaline earth metals, and alcoholates thereof, hydrides thereof, oxides thereof, amides thereof, hydroxides thereof and salts thereof.
- the salts of alkali metals and alkaline earth metals are not particularly limited, and examples thereof include carbonates, nitrogen-containing borates, and basic salts with organic acids.
- the alkali metal is not particularly limited, and examples thereof include lithium, sodium, and potassium.
- the alkaline earth metal is not particularly limited, and examples thereof include magnesium, calcium, strontium, and barium.
- the ester exchange catalyst using a metal other than the alkali metal and the alkaline earth metal is not particularly limited, but for example, a metal other than the alkali metal and the alkaline earth metal, a salt thereof, an alcoholate thereof, and the like. Examples include organic compounds containing metals.
- metals other than alkali metals and alkaline earth metals are not particularly limited, but for example, aluminum, titanium, vanadium, chromium, manganese, iron, cobalt, nickel, copper, zinc, gallium, germanium, zirconium, niobium. , Molybdenum, ruthenium, rhodium, palladium, silver, indium, tin, antimony, tungsten, renium, osmium, iridium, platinum, gold, tarium, lead, bismuth, itterbium and the like.
- transesterification catalysts can be used alone or in combination of two or more.
- the transesterification reaction catalyst the transesterification reaction for obtaining a polycarbonate diol is performed more favorably, and when the obtained transesterification diol is used, the influence on the urethane reaction is smaller. Therefore, sodium, potassium, magnesium, potassium, etc.
- One or more metals selected from the group consisting of titanium, zirconium, tin, lead and itterbium, or salts thereof, alkoxides thereof, or organic compounds containing these metals are preferable.
- one or more metals selected from the group consisting of magnesium, titanium, ytterbium, tin and zirconium are more preferable.
- Specific examples of the preferred transesterification catalyst are not particularly limited, and examples thereof include an organic compound of magnesium, an organic compound of lead, and an organic compound of titanium.
- the organic compound of magnesium is not particularly limited, and examples thereof include magnesium acetate tetrahydrate and magnesium acetate anhydrate.
- the organic compound of lead is not particularly limited, and examples thereof include lead acetate trihydrate, lead tetraphenyl, and lead stearate.
- the organic compound of titanium is not particularly limited, and examples thereof include titanium tetra-n-butoxide, titanium tetra n-propoxide, and titanium tetraisopropoxide.
- the amount of the transesterification reaction catalyst used is preferably 0.00001% by mass or more and 0.1% by mass or less, and more preferably 0.0001% by mass or more and 0.05% by mass or less, based on the total mass of the raw materials.
- the transesterification catalyst used in the transesterification reaction can be calculated based on the amount of the transesterification reaction catalyst used because it is not consumed in the transesterification reaction when the heat treatment is performed following the production of the polycarbonate diol.
- the amount of metal of the transesterification reaction catalyst contained in the polycarbonate diol is measured by ICP (inductively coupled plasma).
- the polycarbonate diol (II-1) used in the production of the polycarbonate diol composition of the present embodiment is obtained by adding a catalyst poison such as a phosphoric acid ester compound in order to inactivate the transesterification reaction catalyst used in the production thereof. There may be.
- the raw material polycarbonate diol (II-1) contains a catalytic poison of the transesterification reaction catalyst used at the time of its production, usually, the ether diol (I-1) and the polycarbonate diol (II-) are contained.
- the transesterification reaction with 1) tends to be difficult to proceed. Therefore, in the production of the polycarbonate diol composition of the present embodiment, a required amount of the above-mentioned transesterification reaction catalyst can be newly added.
- the transesterification reaction in the present embodiment usually tends to proceed easily.
- a required amount of the transesterification reaction catalyst can be newly added. In that case, the same catalyst as the transesterification reaction catalyst used in the production of the raw material polycarbonate diol (II-1) can be adopted.
- the polycarbonate diol (II-1) used for producing the polycarbonate diol composition of the present embodiment may be a homopolycarbonate diol obtained from one kind of diol compound, or a copolymerization obtained from two or more kinds of diol compounds. It may be a based polycarbonate diol.
- any of the above-exemplified polycarbonate diols (II-1) can be used to obtain a polycarbonate diol composition by transesterification reaction with the ether diol (I-1).
- the homopolycarbonate diol obtained by using 1,6-hexanediol widely used in the market is usually solid at room temperature. Therefore, the polycarbonate diol composition obtained by the transesterification reaction between the homopolycarbonate diol and the ether diol (I-1) also tends to be solid at room temperature.
- the copolymerized polycarbonate diol obtained by using any two of 1,4-butanediol, 1,5-pentanediol and 1,6-hexanediol is liquid at room temperature. Therefore, the polycarbonate diol composition obtained by the transesterification reaction between the copolymerized polycarbonate diol and the ether diol (I-1) also tends to be liquid at room temperature.
- the number average molecular weight of the polycarbonate diol (II-1) used in the production of the polycarbonate diol composition of the present embodiment is not particularly limited, but is preferably 500 or more and 5000 or less, and more preferably 1000 or more and 3000 or less.
- the number average molecular weight of the polycarbonate diol (II-1) is equal to or higher than the above lower limit, the performance expected of the polycarbonate diol composition tends to be further improved.
- the number average molecular weight of the polycarbonate diol (II-1) is not more than the above upper limit value, the increase in viscosity of the polycarbonate diol composition can be more effectively suppressed, and the handleability tends to be further improved.
- the method for producing the polycarbonate diol composition of the present embodiment is not particularly limited, but it is preferably produced by a transesterification reaction using an ether diol (I-1) and a polycarbonate diol (II-1).
- the transesterification reaction can be carried out by mixing the ether diol (I-1) and the polycarbonate diol (II-1) and stirring while heating.
- the temperature of the transesterification reaction is not particularly limited, but is preferably 120 ° C. or higher and 200 ° C. or lower, and more preferably 140 ° C. or higher and 180 ° C. or lower.
- the transesterification reaction can be performed in a shorter time, which is excellent in economy.
- the reaction temperature By setting the reaction temperature to the above upper limit value or less, coloring of the obtained polycarbonate diol composition can be more effectively prevented.
- the reaction pressure of the transesterification reaction is not particularly limited, but is preferably normal pressure or more and 1 MPa or less. By setting the reaction pressure within the above range, the reaction can be carried out more easily. Further, when an auxiliary raw material is used, the transesterification reaction can be promoted more efficiently by pressurizing to some extent in consideration of these vapor pressures and the like.
- the area ratio (%) having a number average molecular weight of 1000 or less is preferably 7% or less, more preferably 6% or less, among the molecular weight calculation results calculated by GPC measurement.
- the lower limit of the area ratio (%) having the number average molecular weight of 1000 or less is not particularly limited, but is, for example, 0.5%.
- a polycarbonate diol (II-1) and an ether diol (I-1), which are raw materials for a small amount of the polycarbonate diol (II-1), are used in the presence of the diol. It is preferable to carry out the ester exchange reaction and the depolymerization at the same time, or to carry out the ester exchange reaction in the presence of one or more kinds of ether diols (I-1).
- the progress and completion of the transesterification reaction can be confirmed by GPC measurement.
- the peak derived from the ether diol (I-1) as a raw material became smaller with time, and when the peak disappeared, the polycarbonate diol (II-1) as a raw material became It can be confirmed that the structure derived from the ether diol (I-1) is bonded to the end and the inside of the polymer chain.
- a step of dehydrating the raw material to be used may be performed as a pretreatment before the transesterification reaction described above.
- a step of adding the catalyst poison described above to the transesterification reaction catalyst may be performed as a post-treatment.
- the polycarbonate diol composition of the present embodiment may also contain a raw material ether diol (I-1) and a polycarbonate diol (II-1).
- the content of these compounds is arbitrary, but is preferably 1% by mass or more and 99% by mass or less, and more preferably 5% by mass or more and 95% by mass or less. It is more preferably 10% by mass or more and 80% by mass or less.
- a diol compound which is a raw material of the polycarbonate diol (II-1) may be further contained as long as the effect is not hindered. The method for measuring these compounds can be measured by LC-MS measurement.
- the polycarbonate diol composition of the present embodiment can be used as a raw material of polyurethane for reacting with polyisocyanate, and since the polyurethane is excellent in chemical resistance, heat resistance and weather resistance, foams, elastomers, paints and coatings. It can be widely used in agents, adhesives, adhesives, artificial leather, synthetic leather, water-based polyurethane paints, and the like. Furthermore, it can be used for applications such as polyester and polyimide modifiers.
- the polyurethane of the present embodiment is made by using the above-mentioned polycarbonate diol composition.
- Examples thereof include a method in which the above-mentioned polycarbonate diol composition, other polyols, polyisocyanates and a chain extender are collectively mixed and reacted (hereinafter, may be referred to as a “one-shot method”), or first, the above-mentioned polycarbonate.
- a method in which a diol composition, other polyols and polyisocyanates are reacted to prepare a prepolymer having both terminal isocyanate groups, and then the prepolymer is reacted with a chain extender hereinafter, may be referred to as "prepolymer method”).
- the isocyanate compound contained in the polyurethane of the present embodiment is not particularly limited as long as it acts as a curing agent, and a compound having two or more isocyanate groups at the ends is used.
- Such isocyanate compounds are not particularly limited, and for example, chain aliphatic diisocyanates, cyclic aliphatic diisocyanates, aromatic diisocyanates, isocyanate compounds having three or more isocyanate groups, and these isocyanate compounds. Examples thereof include isocyanurate-modified products and biuret-modified products.
- the chain aliphatic diisocyanate is not particularly limited, and examples thereof include hexamethylene diisocyanate and trimethylhexamethylene diisocyanate.
- the cyclic aliphatic diisocyanate is not particularly limited, and examples thereof include isophorone diisocyanate.
- the aromatic diisocyanate is not particularly limited, and examples thereof include tolylene diisocyanate, 4,4'-diphenylmethane diisocyanate (hereinafter, may be abbreviated as "MDI"), xylylene diisocyanate, and naphthylene diisocyanate.
- MDI 4,4'-diphenylmethane diisocyanate
- xylylene diisocyanate xylylene diisocyanate
- naphthylene diisocyanate naphthylene diisocyanate
- the isocyanate compound having three or more isocyanate groups is not particularly limited, and is, for example, triphenylmethane-4,4'-4''-triisocyanate, 1,3,5-triisocyanatobenzene, 2,4. , 6-Triisocyanatotoene and 4,4'-dimethyldiphenylmethane-2,2', 5,5'-tetraisocyanate and the like.
- a commercially available isocyanate compound may be used, or may be synthesized by a known method.
- the content of the isocyanate compound may be appropriately adjusted according to the molar amount of the hydroxyl group of the polyol which is the main agent.
- the molar ratio (NCO / OH) of the isocyanate group of the isocyanate compound to the hydroxyl group of the polycarbonate diol can be, for example, 0.2 or more and 5.0 or less, for example, 0.4 or more and 3.0. For example, it can be 0.5 or more and 2.0 or less.
- NCO / OH is at least the above lower limit value, a tougher coating film tends to be obtained.
- NCO / OH is not more than the above upper limit value, the smoothness of the coating film tends to be further improved.
- the chain extender used in producing the polyurethane of the present embodiment is not particularly limited, and examples thereof include usually polyols and polyamines.
- the polyol is not particularly limited, and examples thereof include linear diols, branched chain diols, cyclic diols, and diols having an aromatic ring.
- the linear diol is not particularly limited, and is, for example, ethylene glycol, 1,3-propanediol, 1,5-pentanediol, 1,6-hexanediol, 1,7-heptanediol, and 1,8-octane. Examples thereof include diols, 1,9-nanodiols, 1,10-decanediols, 1,11-undecanediols, and 1,12-dodecanediols.
- the branched chain diol is not particularly limited, and is, for example, 2-methyl-1,8-octanediol, neopentyl glycol, 2-ethyl-1,6-hexanediol, 2-methyl-1,3-propanediol. , 3-Methyl-1,5-pentanediol, 2,4-dimethyl-1,5-pentanediol, 2,4-diethyl-1,5-pentanediol and the like.
- the cyclic diol is not particularly limited, and examples thereof include 1,3-cyclohexanediol, 1,4-cyclohexanediol, 1,4-cyclohexanedimethanol, and 2-bis (4-hydroxycyclohexyl) -propane.
- the diol having an aromatic ring is not particularly limited, but for example, p-xylenediol, p-tetrachloroxylenediol, 1,4-bis (hydroxyethoxy) benzene, 2,2-bis [(4-hydroxyethoxy)). Phenyl] Propane and the like can be mentioned.
- the polyamine is not particularly limited, and examples thereof include hydroxyamines and polyamines.
- Hydroxylamines are not particularly limited, and examples thereof include N-methylethanolamine and N-ethylethanolamine.
- the polyamines are not particularly limited, and for example, ethylenediamine, 1,3-diaminopropane, hexamethylenediamine, triethylenetetramine, diethylenetriamine, isophoronediamine, 4,4'-diaminodicyclohexylmethane, 2-hydroxyethylpropylenediamine, Di-2-hydroxyethylethylenediamine, di-2-hydroxyethylpropylenediamine, 2-hydroxypropylethylenediamine, di-2-hydroxypropylethylenediamine, 4,4'-diphenylmethanediamine, methylenebis (o-chloroaniline), xylylenediamine , Diphenyldiamine, tolylenediamine, hydrazine, piperazine, N, N'-diaminopiperazine and the like.
- chain extenders may be used alone or in combination of two or more.
- the synthetic leather of the present embodiment is a synthetic leather in which a base cloth, an adhesive layer, an intermediate layer and an epidermis layer are sequentially laminated, and includes the above-mentioned polyurethane.
- the above-mentioned polyurethane is preferably contained in the adhesive layer and / or the intermediate layer, and the synthetic leather of the present embodiment contains the above-mentioned polyurethane and is organic to be used in production. This is preferable because the amount of solvent can be reduced.
- the coating material or coating agent composition (painting) of the present embodiment is made by using the above-mentioned polycarbonate diol composition.
- a production method known in the industry is used.
- a two-component solvent-based coating composition in which a coating main agent obtained from the above-mentioned polycarbonate diol composition and a curing agent composed of polyisocyanate are mixed immediately before coating; obtained by reacting the above-mentioned polycarbonate diol with polyisocyanate.
- One-component solvent-based coating composition composed of a urethane prepolymer having an isocyanate terminal group; a one-component solvent-based coating composition composed of a polyurethane resin obtained by reacting the above-mentioned polycarbonate diol, organic polyisocyanate and chain extender. Can be manufactured.
- the paint or coating agent composition (paint) of the present embodiment includes, for example, a curing accelerator (catalyst), a leveling agent, a filler, a dispersant, a flame retardant, a dye, an organic or inorganic pigment, and a release, depending on various uses.
- a curing accelerator catalyst
- Other additives such as molds, fluidity modifiers, plasticizers, antioxidants, UV absorbers, light stabilizers, defoamers, colorants, solvents, etc. can be added.
- coating compositions having different properties such as soft-feel coating materials and clear coating materials can be obtained.
- the curing accelerator is not particularly limited, and examples thereof include commonly used ones such as monoamines, diamines, other triamines, cyclic amines, alcohol amines, ether amines, and metal catalysts.
- the monoamine is not particularly limited, and examples thereof include triethylamine, N, N-dimethylcyclohexylamine and the like.
- the diamine is not particularly limited, and examples thereof include tetramethylethylenediamine and the like.
- the alcohol aminone is not particularly limited, and examples thereof include dimethylethanolamine and the like.
- the metal catalyst is not particularly limited, but for example, potassium acetate, potassium 2-ethylhexanoate, calcium acetate, lead octylate, dibutyltin dilaurate, tin octylate, bismuth neodecanoate, bismuth oxycarbonate, bismuth 2 -Ethylhexanoate, zinc octylate, zinc neodecanoate, phosphine, phosphorin and the like can be mentioned.
- organic solvent examples include amide-based solvents, sulfoxide-based solvents, ketone-based solvents, ether-based solvents, ester-based solvents, carbonic acid ester solvents, aromatic hydrocarbon-based solvents, and the like.
- organic solvents may be used alone or as a mixed solvent of two or more kinds.
- hydroxyl value of the polycarbonate diol (composition) was measured by the following method. First, using a volumetric flask, pyridine was added to 12.5 g of acetic anhydride to make 50 mL, and an acetylation reagent was prepared. Then, 2.5 g of the sample was precisely weighed in a 100 mL eggplant flask. Next, 5 mL of the acetylation reagent and 10 mL of toluene were added to the eggplant flask with a whole pipette, a cooling tube was attached, and the solution in the eggplant flask was stirred and heated at 100 ° C. for 1 hour.
- E represents the titration amount (mL) of the sample
- F represents the titration amount (mL) of the blank test
- G represents the sample mass (g)
- f represents the factor of the titration solution.
- Number average molecular weight (A) The number average molecular weight (A) of the polycarbonate diol (composition) was calculated from the hydroxyl value obtained in [Physical characteristics 1] using the following formula (ii).
- Number average molecular weight (A) 2 / (H ⁇ 10 -3 / 56.11) ⁇ ⁇ ⁇ (ii)
- H represents the hydroxyl value (mg-KOH / g) of the polycarbonate diol (composition).
- Number average molecular weight (B) (Gel permeation chromatography (GPC) measurement) A sample was obtained by adjusting the concentration of the polycarbonate diol composition with tetrahydrofuran (hereinafter, THF) so as to be 0.2% by mass. For the obtained sample, the number average molecular weight (B) of the polycarbonate diol composition in terms of standard polystyrene was measured using the following GPC apparatus. Then, from the molecular weight calculation result of the polycarbonate diol composition, an area ratio (%) having a number average molecular weight (Mn) of 1000 or less was determined.
- GPC device HLC-8320 manufactured by Tosoh Corporation
- G3000H 1 bottle G2000H 2 bottles
- Tg glass transition temperature
- Tg Polyurethane glass transition temperature
- the test piece was taken out, the front and back sides were lightly wiped with a paper wiper, and then the mass was measured with a precision balance to calculate the mass change rate (increase rate (swelling rate (%))) from before the test.
- ⁇ Evaluation criteria> Indicates that the surface of the coating film was smooth ⁇ : Indicates that the surface of the coating film had some streaks, irregularities, and repellency ⁇ : Indicates that the surface of the coating film had some streaks, irregularities, and repellency.
- E-1 Polyoxypropylene glycol (manufactured by Sanyo Kasei Kogyo Co., Ltd., "New Pole PE-61” (trade name), number average molecular weight: about 2000, linear and / or branched chain carbon number 3-2 Percentage of structures that are valence aliphatic hydrocarbon groups: 88%)
- E-2 Polyoxytetramethylene glycol (manufactured by Mitsubishi Chemical Co., Ltd., "PTMG2000” (trade name), number average molecular weight: about 2000, linear and / or branched chain divalent aliphatic with 3 carbon atoms Percentage of structures that are hydrocarbon groups: 0%)
- E-3 Polyoxypropylene glycol (manufactured by Fuji Film Wako Pure Chemical Industries, Ltd., polypropylene glycol, diol type, 2,000 (trade name), number average molecular weight: about 2000, linear and / or branched carbon Percentage of
- E-5 Polyoxytetramethylene glycol (manufactured by Mitsubishi Chemical Co., Ltd., "PTMG850” (trade name), number average molecular weight: 850, linear and / or branched chain-like divalent aliphatic hydrocarbon with 3 carbon atoms Percentage of structures that are hydrocarbon groups: 0%)
- E-6 Polyoxypropylene glycol (manufactured by Nichiyu Co., Ltd., "Pronon # 102" (trade name), number average molecular weight: about 1250, linear and / or branched chain divalent fat having 3 carbon atoms Percentage of structures that are group hydrocarbon groups: 90%)
- the reactor was directly connected to the condenser, the temperature of the oil bath was raised to 180 ° C., and then the reaction was carried out by gradually lowering the pressure for another 3 hours to obtain polycarbonate diol P-1 (466 g) which is a liquid at room temperature. Obtained.
- the hydroxyl value of the obtained polycarbonate diol P-1 was 55.2 mgKOH / g.
- the number average molecular weight of the obtained polycarbonate diol P-1 was 2033.
- the reactor was directly connected to the condenser, the temperature of the oil bath was raised to 180 ° C., and then the reaction was carried out by gradually lowering the pressure for another 8 hours to obtain polycarbonate diol P-2 (462 g) which is a liquid at room temperature. Obtained.
- the hydroxyl value of the obtained polycarbonate diol P-2 was 55.8 mgKOH / g.
- the number average molecular weight of the obtained polycarbonate diol P-2 was 2010.
- the reactor was directly connected to the condenser, the temperature of the oil bath was raised to 170 ° C., and then the reaction was carried out by gradually lowering the pressure for another 5 hours to obtain polycarbonate diol P-3 (577 g) which is a liquid at room temperature. Obtained.
- the hydroxyl value of the obtained polycarbonate diol P-3 was 53.0 mgKOH / g.
- the number average molecular weight of the obtained polycarbonate diol P-3 was 2117.
- the reactor was directly connected to the condenser, the temperature of the oil bath was raised to 185 ° C., and then the reaction was carried out by gradually lowering the pressure for another 6 hours to obtain polycarbonate diol P-4 (290 g) which is a liquid at room temperature. Obtained.
- the hydroxyl value of the obtained polycarbonate diol P-4 was 56.2 mgKOH / g.
- the number average molecular weight of the obtained polycarbonate diol P-4 was 1996.
- the reactor was directly connected to the condenser, the temperature of the oil bath was raised to 180 ° C., and then the reaction was carried out by gradually lowering the pressure for another 3 hours to obtain polycarbonate diol P-5 (466 g) which is a liquid at room temperature. Obtained.
- the hydroxyl value of the obtained polycarbonate diol P-5 was 56.4 mgKOH / g.
- the number average molecular weight of the obtained polycarbonate diol P-5 was 1989.
- the reactor was directly connected to the condenser, the temperature of the oil bath was raised to 185 ° C, and then the reaction was carried out for another 2 hours by gradually lowering the pressure, and the polycarbonate diol P-6 which was waxy (solid) at room temperature. (399 g) was obtained.
- the hydroxyl value of the obtained polycarbonate diol P-6 was 56.3 mgKOH / g.
- the number average molecular weight of the obtained polycarbonate diol P-6 was 1992.
- the reactor was directly connected to the condenser, the temperature of the oil bath was raised to 180 ° C., and then the reaction was carried out by gradually lowering the pressure for another 3 hours to obtain polycarbonate diol P-7 (468 g) which is solid at room temperature. Obtained.
- the hydroxyl value of the obtained polycarbonate diol P-7 was 55.2 mgKOH / g.
- the number average molecular weight of the obtained polycarbonate diol P-7 was 2033.
- Example 1 Production of Polycarbonate Diol Composition A-1 90 mass of the polycarbonate diol P-1 obtained in Synthesis Example 1 was placed in a 1 L glass flask (hereinafter, also referred to as “reactor”) equipped with a stirrer. 10 parts (40 g) of parts (360 g) and polyoxypropylene glycol E-1 (manufactured by Sanyo Kasei Kogyo Co., Ltd., "New Pole PE-61" (trade name), number average molecular weight: about 2000) were charged. .. Then, these were heated with stirring and maintained at about 145 ° C. for 13 hours as the temperature inside the reactor.
- the finally obtained polycarbonate diol composition undergoes a reaction almost quantitatively based on the amount of the raw material charged, and has a structure corresponding to the reaction, which is also measured over time of GPC. Confirmed by.
- Each physical property of the obtained polycarbonate diol composition A-1 was measured by the above method. The results are shown in Table 1.
- the hydroxyl value of the obtained polycarbonate diol composition A-1 was 55.5 mgKOH / g.
- the number average molecular weight of the obtained polycarbonate diol composition A-1 was 2021.
- Examples 2 to 19 The reaction was carried out under the same conditions and methods as in Example 1 except that the types and amounts of the raw materials were changed as shown in Tables 1 and 2, respectively, and the polycarbonate diol compositions A- of Examples 2 to 19 were carried out. 2 to A-19 were obtained. The physical characteristics of the obtained polycarbonate diol compositions A-2 to A-19 were measured by the above methods. The results are shown in Tables 1 and 2.
- the obtained polyurethane solution was dropped onto a glass plate (JIS R3202, 2 mm ⁇ 100 mm ⁇ 150 mm) on the upper part of the plate, and coated so that the dry film thickness was 50 to 150 ⁇ m, and the surface was coated. It was dried on a hot plate at a temperature of 60 ° C. for 2 hours, followed by an oven at 80 ° C. for 12 hours.
- the polyurethane film PA-1 was obtained by allowing it to stand at 23 ° C. and 55% RH at a constant temperature and humidity for 12 hours or more.
- the obtained polyurethane film PA-1 was subjected to evaluation of various physical properties by the above method. The evaluation results are shown in Table 4.
- R 11 is a divalent linear, branched or cyclic aliphatic hydrocarbon group having 2 or more and 20 or less carbon atoms, or an aromatic hydrocarbon group. R 11 may be the same as or different from each other.
- N 11 is an arbitrary integer.
- R 21 is a divalent linear, branched or cyclic aliphatic hydrocarbon group having 2 or more and 15 or less carbon atoms, or an aromatic hydrocarbon group. R 21 may be the same as or different from each other. N 21 is an arbitrary integer.
- R 11 in the general formula (I) is a divalent branched chain aliphatic hydrocarbon group (for example, an isopropylene group)
- R 11 in the general formula (I) is a divalent branched chain aliphatic hydrocarbon group (for example, an isopropylene group)
- it is more excellent in low temperature flexibility, more excellent in olein acidity resistance and moisture heat resistance. It was found that a polyurethane coating material can be obtained, and a coating composition having a higher film-forming property can be obtained even if the solid content concentration is high.
- the average value of the number of repetitions n11 of the structure (I) is 12 or more and 70 or less, and the average value of the number of repetitions n21 of the polycarbonate structure (II) is 1 or more and 50 or less.
- the number of polycarbonate diol compositions (Examples 1 to 19) had better low-temperature flexibility when made into polyurethane than the polycarbonate diol compositions (Comparative Example 2) having no above-mentioned constitution.
- the polycarbonate diol composition has a decrease in melt viscosity at 50 ° C. as the content of the structure (I) increases, and the coating material or the like. There was a tendency for polyurethane to be suitable for high solidification.
- the polycarbonate diol composition of the present embodiment has a low viscosity, polyurethane having excellent durability of olein acidity resistance and moisture heat resistance can be obtained.
- the polycarbonate diol composition of the present invention can be made into a high solid, for example, during the production of paints and polyurethanes, and is useful as a raw material for paints and polycarbonate-based polyurethanes. Further, the polyurethane produced by using the polycarbonate diol composition of the present invention has excellent low temperature flexibility and durability, and is used in a wide range of fields such as elastic fibers, synthetic or artificial leather, paints, and high-performance elastomers. Can be suitably used in.
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Abstract
Description
[1]
下記一般式(I)で表される構造と、下記一般式(II)で表されるポリカーボネート構造とを有するポリカーボネートジオールを含有し、50℃における溶融粘度が1000~10000mPa・sであり、下記一般式(I)における繰り返し数n11の平均値が12以上であるポリカーボネートジオール組成物。
[2]
前記一般式(I)における繰り返し数n11の平均値が15以上である[1]に記載のポリカーボネートジオール組成物。
[3]
前記ポリカーボネートジオールの少なくとも一部が、前記一般式(II)におけるR21が炭素数2以上15以下の2価の直鎖状及び分岐鎖状の脂肪族炭化水素基からなる群より選ばれる少なくとも2種以上である[1]又は[2]に記載のポリカーボネートジオール組成物。
[4]
前記一般式(I)におけるR11が直鎖状及び/又は分岐鎖状の炭素数3の2価の脂肪族炭化水素基である構造が、前記一般式(I)で表される構造のうち60質量%以上95質量%以下含む[1]~[3]のいずれかに記載のポリカーボネートジオール組成物。
[5]
前記一般式(I)で表される構造及び前記一般式(II)で表されるポリカーボネート構造の合計質量に対して、前記一般式(I)で表される構造の含有量が5質量%以上40質量%以下であり、前記一般式(II)で表されるポリカーボネート構造の含有量が60質量%以上95質量%以下である[1]~[4]のいずれかに記載のポリカーボネートジオール組成物。
[6]
示差走査熱量計により測定したガラス転移温度が-50℃以下である[1]~[5]のいずれかに記載のポリカーボネートジオール組成物。
[7]
23℃における性状が液状かつ透明である[1]~[6]のいずれかに記載のポリカーボネートジオール組成物。
[8]
ゲル浸透クロマトグラフィーにより算出した前記ポリカーボネートジオール組成物の分子量計算結果のうち、数平均分子量(Mn)が1000以下の面積比(%)が7%以下である[1]~[7]のいずれかに記載のポリカーボネートジオール組成物。
[9]
[1]~[8]のいずれかに記載のポリカーボネートジオール組成物を用いてなるポリウレタン。
[10]
基布、接着層、中間層及び表皮層が順次積層された合成皮革であって、[9]に記載のポリウレタンを含む合成皮革。
本実施形態のポリカーボネートジオール組成物は、分子鎖内に、下記一般式(I)で表される構造(以下、「構造(I)」と称する場合がある)と、下記一般式(II)で表されるポリカーボネート構造(以下、「ポリカーボネート構造(II)」と称する場合がある)とを有するポリカーボネートジオールを含有し、下記一般式(I)における繰り返し数n11の平均値が12以上である。
本実施形態のポリカーボネートジオール組成物において、構造(I)及びポリカーボネート構造(II)の合計質量に対して、構造(I)の含有量は、5質量%以上40質量%以下が好ましく、10質量%以上35質量%以下がより好ましい。
(R11)
一般式(I)中、R11は、炭素数2以上20以下の2価の直鎖状、分岐鎖状若しくは環状の脂肪族炭化水素基、又は、芳香族炭化水素基である。複数あるR11は互いに同一であってもよく、異なっていてもよい。
また、一般式(I)におけるR11が直鎖状及び/又は分岐鎖状の炭素数3の2価の脂肪族炭化水素基である構造が、一般式(I)で表される構造のうち60質量%以上95質量%以下含むことが好ましく、70~95質量%含むことがより好ましく、R11が直鎖状及び/又は分岐鎖状の炭素数3の2価の脂肪族炭化水素基である構造の含有割合が前記範囲内であると、透明性に優れ、低温特性、により一層優れたポリウレタンが得られる傾向にある。
なお、本実施形態において、ポリカーボネートジオール中の一般式(I)におけるR11が直鎖状及び/又は分岐鎖状の炭素数3の2価の脂肪族炭化水素基である構造の割合は以下の方法により求めることができる。
サンプルを重水素クロロホルム(アルドリッチ製)に溶解し、3重量/vol%の溶液を得る。該溶液に化学シフト基準としてテトラメチルシラン(TMS)を加えて、得られた溶液について日本電子株式会社製、JNM-ECA500を用いて1H-NMRを測定する。該測定において、共鳴周波数:500MHz、積算回数:128回とし、TMSシグナルを0ppmとして1H-NMRスペクトルを得、そのスペクトルから直鎖状及び/又は分岐鎖状の炭素数3の2価の脂肪族炭化水素基である構造の割合を求めることができる。
一般式(I)中、n11は構造(-R11-O-)の繰り返し数を表す。一般式(I)中、n11は任意の整数であるが、本実施形態のポリカーボネートジオール組成物全体におけるn11の平均値は12以上であり、好ましくは12以上70以下の範囲であり、12以上60以下の範囲がより好ましく、15以上50以下の範囲が特に好ましい。
本実態形態のポリカーボネートジオール組成物において、構造(I)及びポリカーボネート構造(II)の合計質量に対して、ポリカーボネート構造(II)の含有量は、60質量%以上95質量%以下が好ましく、65質量%以上90質量%以下がより好ましい。
(R21)
一般式(II)中、R21は、炭素数2以上15以下の2価の直鎖状、分岐鎖状若しくは環状の脂肪族炭化水素基、又は、芳香族炭化水素基である。複数あるR21は互いに同一であってもよく、異なっていてもよい。
なお、本実施形態において、ポリカーボネートジオール中の一般式(II)におけるR21の組成は以下の方法により決定することができる。
まず、100mlのナスフラスコに、サンプルを1g測り取り、エタノール30g、水酸化カリウム4gを入れて、混合物を得る。得られた混合物を100℃のオイルバスで1時間加熱する。前記混合物を室温まで冷却後、指示薬としてフェノールフタレインを前記混合物に1~2滴添加し、塩酸で中和する。その後、前記混合物を冷蔵庫で3時間冷却し、沈殿した塩を濾過で除去した後、濾液を下記分析条件にてガスクロマトグラフィー(以下、GCと表記する)分析する。GC分析により得られたジオール化合物の面積値を元に、ポリカーボネートジオール中の一般式(II)におけるR21の組成を決定することができる。
一般式(II)中、n21は、カーボネート構造(-R21-O-CO-O-)の繰り返し数を表す。n21は任意の整数であるが、本実施形態のポリカーボネートジオール組成物全体におけるn21の平均値は、1以上50以下の範囲が好ましく、2以上50以下の範囲がより好ましく、3以上30以下の範囲がさらに好ましく、4以上20以下の範囲が特に好ましい。
(2)フェノールフタレインを指示薬として、塩酸を加えて中和する。
(3)析出させた塩を濾別し、濾液をゲル浸透クロマトグラフィー(以下、GPCと略記する場合ある)測定する。
(4)濾液中の一般式(I)で表される構造の両末端が水酸基であるジオールの濃度を、別途作製した検量線から求める。その濃度から一般式(I)で表される構造の両末端が水酸基であるジオールの質量を算出し、アルカリ加水分解に用いたポリカーボネートジオール組成物の質量で除した値が一般式(I)で表される構造の両末端が水酸基であるジオールの含有量である。
本実施形態のポリカーボネートジオール組成物をE型粘度計で測定した50℃における溶融粘度(以下、単に「50℃における溶融粘度」という)は1000~10000mPa・sであり、2000~9600mPa・sが好ましく、2500~9600mPa・sがさらに好ましい。
本実施形態のポリカーボネートジオール組成物について、示差走査熱量計(以下、「DSC」と略記することがある)により測定したガラス転移温度(Tg)は、-50℃以下であることが好ましく、-55℃以下がより好ましく、-57℃以上がより好ましい。本実施形態のポリカーボネートジオール組成物は、ガラス転移温度(Tg)が上記上限値以下であることによって、ポリウレタンにした際の低温条件下での柔軟性が向上する傾向にある。本実施形態のポリカーボネートジオール組成物のガラス転移温度(Tg)の下限値は、特に限定されないが、例えば、-90℃である。
本実施形態のポリカーボネートジオール組成物は、23℃における性状が液状かつ透明であることが好ましい。本実施形態のポリカーボネートジオール組成物は、常温である23℃において液状でかつ透明あることにより、塗料の構成成分として用いる場合、透明な塗料に用いても白濁することが少ないため、用途が制限されることが少ない。
透明性の評価は、特に限定されないが、例えば、積分球式光電光度法による濁度計で測定することができる。
本実施形態のポリカーボネートジオール組成物は、下記一般式(I-1)で表されるエーテルジオール(以下、「エーテルジオール(I-1)」と称する場合がある)と、下記一般式(II-1)で表されるポリカーボネートジオール(以下、「ポリカーボネートジオール(II-1)」と称する場合がある)とを用いて、エステル交換反応を行うことで得ることができる。
本実施形態のポリカーボネートジオール組成物の製造に用いられるエーテルジオール(I-1)としては、上記一般式(I-1)で表される構造を有するものであればよい。中でも、エーテルジオール(I-1)としては、両末端1級の水酸基を有するポリオキシアルキレンジオールが好ましい。エーテルジオール(I-1)は、各種の分子量の製品が市販されており、このような市販品を用いることもできる。エーテルジオール(I-1)の市販品としては、例えば、三洋化成工業株式会社製の「ニューポール」シリーズや、「プライムポール」シリーズ、「サンニックス」シリーズ、日油株式会社製の「プロノン」シリーズ、AGC株式会社製の「プレミノール」、「エクセノール」シリーズ、三菱ケミカル株式会社製の「PTMG」シリーズ等のポリオキシアルキレンジオール等が挙げられる。
本実施形態のポリカーボネートジオール組成物の製造に用いられるポリカーボネートジオール(II-1)としては、上記一般式(II-1)で表される構造を有するものであればよい。ポリカーボネートジオール(II-1)の製造方法としては、特に限定されず、公知の方法を採用することもできる。例えば、カーボネート化合物と、ジオール化合物とを、エステル交換触媒の存在下で反応させて、ポリカーボネートジオール(II-1)を得ることができる。
ポリカーボネートジオール(II-1)の製造に用いられるカーボネート化合物としては、以下のものに限定されないが、例えば、アルキレンカーボネート、ジアルキルカーボネート、ジアリールカーボネート等が挙げられる。
ポリカーボネートジオール(II-1)の製造に用いられるジオール化合物としては、以下のものに限定されないが、例えば、直鎖状ジオール、分岐鎖状ジオール、環状ジオール、芳香環を有するジオールが挙げられる。
原料であるポリカーボネートジオール(II-1)の製造に際しては、エステル交換反応触媒を用いることができる。触媒としては、通常のエステル交換反応触媒から選択することができる。
本実施形態に用いるポリカーボネートジオール組成物について、GPC測定により算出した分子量計算結果のうち数平均分子量が1000以下の面積比(%)は7%以下であることが好ましく、6%以下がより好ましい。当該数平均分子量が1000以下の面積比(%)の下限値は、特に限定されないが、例えば、0.5%である。当該数平均分子量が1000以下の面積比(%)が前記範囲内であると、得られるポリウレタンの柔軟性が一層向上する傾向にある。ポリカーボネートジオール組成物の数平均分子量を制御する方法としては、例えば、少量のポリカーボネートジオール(II-1)の原料であるジオール存在下ポリカーボネートジオール(II-1)とエーテルジオール(I-1)とを用いてエステル交換反応と解重合を同時に行うことや、エーテルジオール(I-1)の1種類又は2種類以上の存在下でエステル交換反応を行うこと等が好ましい。
本実施形態のポリカーボネートジオール組成物は、ポリイソシアネートと反応させるためのポリウレタンの原料として用いることができ、そのポリウレタンは耐薬品性、耐熱性、耐候性に優れることから、フォーム、エラストマー、塗料、コーティング剤、粘着剤、接着剤、人工皮革、合成皮革、水系ポリウレタン塗料等に広く用いることが出来る。さらには、ポリエステルやポリイミドの改質剤などの用途に用いることができる。
本実施形態のポリウレタンは、上述のポリカーボネートジオール組成物を用いてなる。
本実施形態の塗料又はコーティング剤組成物(塗料)は、上述のポリカーボネートジオール組成物を用いてなる。
ポリカーボネートジオール(組成物)の水酸基価は、以下の方法で測定した。
まず、メスフラスコを用い、無水酢酸12.5gにピリジンを加えて50mLとし、アセチル化試薬を調製した。次いで、100mLのナスフラスコに、サンプルを2.5g精秤した。次いで、前記ナスフラスコに、アセチル化試薬5mLとトルエン10mLとをホールピペットで添加後、冷却管を取り付けて、100℃で1時間、前記ナスフラスコ中の溶液を撹拌加熱した。次いで、前記ナスフラスコに、蒸留水2.5mLをホールピペットで添加後、さらに10分、前記ナスフラスコ中の溶液を加熱撹拌した。前記ナスフラスコ中の溶液を2~3分冷却後、前記ナスフラスコに、エタノールを12.5mL添加した。次いで、前記ナスフラスコに、指示薬としてフェノールフタレインを2~3滴入れ、0.5mol/Lのエタノール性水酸化カリウムで滴定した。次いで、アセチル化試薬5mL、トルエン10mL、及び、蒸留水2.5mLを100mLのナスフラスコに入れ、10分間、前記ナスフラスコ中の溶液を加熱撹拌した後、同様に滴定を行った(空試験)。この結果をもとに、下記式(i)でポリカーボネートジオール(組成物)の水酸基価を計算した。
水酸基価(mg-KOH/g)={(F-E)×28.05×f}/G ・・・(i)
なお、式(i)中、Eはサンプルの滴定量(mL)を表し、Fは空試験の滴定量(mL)を表し、Gはサンプル質量(g)を表し、fは滴定液のファクターを表す。
ポリカーボネートジオール(組成物)の数平均分子量(A)は、[物性1]で求められた水酸基価から、下記式(ii)を用いて計算した。
数平均分子量(A)=2/(H×10-3/56.11) ・・・(ii)
なお、式(ii)中、Hはポリカーボネートジオール(組成物)の水酸基価(mg-KOH/g)を表す。
ポリカーボネートジオール組成物の濃度が0.2質量%になるようにテトラヒドロフラン(以下、THF)で調整し、サンプルを得た。得られたサンプルについて、下記GPC装置を用い、標準ポリスチレン換算でのポリカーボネートジオール組成物の数平均分子量(B)を測定した。その後、ポリカーボネートジオール組成物の分子量計算結果から、数平均分子量(Mn)が1000以下の面積比(%)を求めた。
GPC装置:東ソー社製 HLC-8320
カラム :TSKgel G4000H 1本
G3000H 1本
G2000H 2本
溶離液 :テトラヒドロフラン(THF)
流速 :1.0mL/min
カラム温度:40℃
RI検出器:RI(装置 HLC-8320内蔵)
ポリカーボネートジオール組成物を予め50℃に加熱した後、E型粘度計(東機産業株式会社製、TVE-22HT、コーン:No.6)を用い、50℃でポリカーボネートジオール組成物の溶融粘度を測定した。
ポリカーボネートジオール組成物約10gをアルミニウム製パン中に封入し、示差走査熱量計(DSC7000X、株式会社日立ハイテクノサイエンス製)を用い、窒素雰囲気下、毎分20℃の速度で30℃から100℃、毎分5℃の速度で100℃から-100℃、毎分5℃の速度で-100℃から100℃と昇降温操作を行い、2回目昇温時の変曲点をガラス転移温度(Tg)として求めた。
80℃に加熱したポリカーボネートジオール組成物を透明なサンプル瓶に入れ、23℃まで冷えた状態を目視で観察した。サンプル瓶を傾けた時に僅かでも流動性がある場合を液状と判断した。
n11及びn21の平均値は、ポリカーボネートジオール組成物をアルカリ分解して原料ジオール成分を取り出し、当該成分についてGC-MS測定、LC-MS測定及びゲルパーミエーションクロマトグラフィー(GPC)測定を行うことで求めた。
ポリウレタンフィルムから幅10mm、長さ40mm、厚さ0.4mmの試験片を切り出した。粘弾性測定装置(株式会社日立ハイテクサイエンス製、[TA7000シリーズ、DMA7100])を用い、チャック間距離20mmに試験片をセッティングし、-100℃から100℃に5℃/分で昇温しながら粘弾性の測定を行った。該測定結果からtanδのピークを読み取り、ポリウレタンのガラス転移温度(Tg)を求めた。
JIS K6301(2010)に準じ、ポリウレタンフィルムから幅10mm、長さ100mm、厚み約0.1mmの短冊状の試験片を作成した。作成した試験片について、引張試験機(株式会社オリエンテック社製、製品名「テンシロン、モデルRTE-1210」)を用いて、チャック間距離20mm、引張速度100mm/分にて、温度23℃(相対湿度55%)で引張試験を実施し、試験片が100%伸長した時点での応力(100%モジュラス)を測定した。100%モジュラスが低いほど柔軟性に優れると評価した。
JIS K6301(2010)に準じ、ポリウレタンフィルムから幅10mm、長さ100mm、厚み約0.1mmの短冊状の試験片を作成した。作成した試験片を、恒温槽(株式会社オリエンテック社製、「モデルTLF-R3T-E-W」)付き引張試験機(株式会社オリエンテック社製、製品名「テンシロン、モデルRTE-1210」に、チャック間距離20mmで設置した。続いて、試験片を-20℃で5分間静置した後に引張速度100mm/分にて試験片の引張試験を実施し、試験片が100%伸長した時点での応力(100%モジュラス)を測定した。100%モジュラスが低いほど柔軟性に優れると評価した。
耐薬品性として、オレインを用いた耐オレイン酸性評価を行った。
ポリウレタンフィルムから1cm×10cmの試験片を切り出した。精密天秤で試験片の質量を測定した後、試験溶媒としてオレイン酸50mLを入れた容量250mLのガラスバットに投入して、80℃の窒素雰囲気下の恒温槽にて24時間静置した。試験後、試験片を取り出して、表裏を紙製ワイパーで軽く拭いた後、精密天秤で質量測定を行い、試験前からの質量変化率(増加率(膨潤率(%))を算出した。質量変化率が0%に近いほうが、耐オレイン酸性が良好であることを示す。
ポリウレタンフィルムから、幅10mm、長さ100mm、厚さ約100μmの短冊状のサンプルを作成した。作成したサンプルについて、エスペック社製、恒温恒湿器、製品名「PR-1J」にて温度85℃、湿度85%条件下で10日間加熱を行った。加熱後のサンプルを、上記<常温引張り試験>と同様に、破断強度を測定し、その保持率(%)を求めた。
保持率=加熱後の破断強度/加熱前の破断強度×100
ポリウレタンフィルムから、幅10mm、長さ100mm、厚さ約100μmの短冊状のサンプルを作成した。作成したサンプルについて、株式会社二葉科学製、多重安全式乾燥器、製品名「MSO-45TP」にて温度120℃で7日間加熱を行った。加熱後のサンプルを、上記<常温引張り試験>と同様に、破断強度を測定し、その保持率(%)を求めた。
保持率=加熱後の破断強度/加熱前の破断強度×100
ガラス板(JIS R3202、2mm×100mm×150mm)の両端に再剥離性の紙製粘着テープをスペーサーとして必要枚数貼り付けた。次いで、後述する応用例に基づき製造した各塗料組成物を前記ガラス板の上部に滴下し、乾燥膜厚が30~40μmになるように、ガラス棒(直径8mm)を用いて塗工した。次いで、23℃で50%RHの雰囲気下で15分間養生した。次いで、140℃で20分間焼付け乾燥して、塗膜を得た。
<評価基準>
○: 塗膜表面が平滑であったことを表す
△: 塗膜表面に筋や凹凸、はじきが少しみられることを表す
×: 塗膜表面に少し筋や凹凸、はじきがみられることを表す
E-1:ポリオキシプロピレングリコール(三洋化成工業株式会社製、「ニューポールPE-61」(商品名)、数平均分子量:約2000、直鎖状及び/又は分岐鎖状の炭素数3の2価の脂肪族炭化水素基である構造の割合:88%)
E-2:ポリオキシテトラメチレングリコール(三菱ケミカル株式会社製、「PTMG2000」(商品名)、数平均分子量:約2000、直鎖状及び/又は分岐鎖状の炭素数3の2価の脂肪族炭化水素基である構造の割合:0%)
E-3:ポリオキシプロピレングリコール(富士フィルム和光純薬株式会社製、ポリプロピレングリコール、 ジオール型、 2,000(商品名)、数平均分子量:約2000、直鎖状及び/又は分岐鎖状の炭素数3の2価の脂肪族炭化水素基である構造の割合:100%)
E-4:ポリオキシテトラメチレングリコール(BASF社製、PolyTHF250(商品名)、数平均分子量:250、直鎖状及び/又は分岐鎖状の炭素数3の2価の脂肪族炭化水素基である構造の割合:0%)
E-5:ポリオキシテトラメチレングリコール(三菱ケミカル株式会社製、「PTMG850」(商品名)、数平均分子量:850、直鎖状及び/又は分岐鎖状の炭素数3の2価の脂肪族炭化水素基である構造の割合:0%)
E-6:ポリオキシプロピレングリコール(日油株式会社製、「プロノン#102」(商品名)、数平均分子量:約1250、直鎖状及び/又は分岐鎖状の炭素数3の2価の脂肪族炭化水素基である構造の割合:90%)
規則充填物を充填した精留塔と攪拌装置とを備えた1Lのガラス製フラスコ(以下「反応器」とも記す)に1,5-ペンタンジオール230g、1,6-ヘキサンジオール250g、及び、エチレンカーボネート400gを仕込んだ後、触媒としてチタンテトラ-n-ブトキシドを0.0468g入れた。反応器を180℃のオイルバスに浸漬し、留出液の一部を抜き出しながら、反応温度165℃で12時間反応した。次いで、反応器を直接コンデンサーに接続し、オイルバスの温度を180℃に上げた後、圧力を徐々に下げでさらに3時間反応を行い、常温で液体であるポリカーボネートジオールP-1(466g)を得た。得られたポリカーボネートジオールP-1の水酸基価は、55.2mgKOH/gであった。また、得られたポリカーボネートジオールP-1の数平均分子量は、2033であった。
規則充填物を充填した精留塔と攪拌装置とを備えた1Lのガラス製フラスコ(以下「反応器」とも記す)に1,6-ヘキサンジオール270g、1,4-ブタンジオール250g、及び、エチレンカーボネート445gを仕込んだ後、触媒としてチタンテトラ-n-ブトキシドを0.0960g入れた。反応器を140~160℃のオイルバスに浸漬し、留出液の一部を抜き出しながら、反応温度90~160℃で20時間反応した。次いで、反応器を直接コンデンサーに接続し、オイルバスの温度を180℃に上げた後、圧力を徐々に下げでさらに8時間反応を行い、常温で液体であるポリカーボネートジオールP-2(462g)を得た。得られたポリカーボネートジオールP-2の水酸基価は、55.8mgKOH/gであった。また、得られたポリカーボネートジオールP-2の数平均分子量は、2010であった。
規則充填物を充填した精留塔と攪拌装置とを備えた3Lのガラス製フラスコ(以下「反応器」とも記す)に2-メチル-1,3-プロパンジオール550g、1,4-ブタンジオール423g、及び、エチレンカーボネート952gを仕込んだ後、触媒としてチタンテトラ-n-ブトキシドを0.1925g入れた。反応器を170℃のオイルバスに浸漬し、留出液の一部を抜き出しながら、反応温度155℃で25時間反応した。次いで、反応器を直接コンデンサーに接続し、オイルバスの温度を170℃に上げた後、圧力を徐々に下げでさらに5時間反応を行い、常温で液体であるポリカーボネートジオールP-3(577g)を得た。
得られたポリカーボネートジオールP-3の水酸基価は、53.0mgKOH/gであった。また、得られたポリカーボネートジオールP-3の数平均分子量は、2117であった。
規則充填物を充填した精留塔と攪拌装置とを備えた3Lのガラス製フラスコ(以下「反応器」とも記す)に、1,3-プロパンジオール383g及び、エチレンカーボネート444gを仕込んだ後、触媒としてチタンテトラ-n-ブトキシドを0.040g入れた。反応器をオイルバスに浸漬し、留出液の一部を抜き出しながら、反応温度160~175℃で18時間反応した。次いで、反応器を直接コンデンサーに接続し、オイルバスの温度を185℃に上げた後、圧力を徐々に下げでさらに6時間反応を行い、常温で液体であるポリカーボネートジオールP-4(290g)を得た。
得られたポリカーボネートジオールP-4の水酸基価は、56.2mgKOH/gであった。また、得られたポリカーボネートジオールP-4の数平均分子量は、1996であった。
規則充填物を充填した精留塔と攪拌装置とを備えた1Lのガラス製フラスコ(以下「反応器」とも記す)に3-メチル-1,5-ペンタンジオール255g、1,6-ヘキサンジオール254g、及び、エチレンカーボネート380gを仕込んだ後、触媒としてチタンテトラ-n-ブトキシドを0.0468g入れた。反応器を180℃のオイルバスに浸漬し、留出液の一部を抜き出しながら、反応温度165℃で12時間反応した。次いで、反応器を直接コンデンサーに接続し、オイルバスの温度を180℃に上げた後、圧力を徐々に下げでさらに3時間反応を行い、常温で液体であるポリカーボネートジオールP-5(466g)を得た。得られたポリカーボネートジオールP-5の水酸基価は、56.4mgKOH/gであった。また、得られたポリカーボネートジオールP-5の数平均分子量は、1989であった。
規則充填物を充填した精留塔と攪拌装置とを備えた1Lのガラス製フラスコ(以下「反応器」とも記す)に、1,4-ブタンジオール335g、1,10-デカンジオール195g、及び、ジメチルカーボネート405gを仕込んだ後、触媒としてチタンテトラ-n-ブトキシドを0.0936g入れた。反応器を170℃のオイルバスに浸漬し、留出液の一部を抜き出しながら、反応温度160℃で10時間反応した。次いで、反応器を直接コンデンサーに接続し、オイルバスの温度を185℃に上げた後、圧力を徐々に下げでさらに2時間反応を行い、常温でワックス状(固体)であるポリカーボネートジオールP-6(399g)を得た。得られたポリカーボネートジオールP-6の水酸基価は、56.3mgKOH/gであった。また、得られたポリカーボネートジオールP-6の数平均分子量は、1992であった。
規則充填物を充填した精留塔と攪拌装置とを備えた1Lのガラス製フラスコ(以下「反応器」とも記す)に1,6-ヘキサンジオール536g、及び、エチレンカーボネート400gを仕込んだ後、触媒としてチタンテトラ-n-ブトキシドを0.0475g入れた。反応器を180℃のオイルバスに浸漬し、留出液の一部を抜き出しながら、反応温度165℃で12時間反応した。次いで、反応器を直接コンデンサーに接続し、オイルバスの温度を180℃に上げた後、圧力を徐々に下げでさらに3時間反応を行い、常温で固体であるポリカーボネートジオールP-7(468g)を得た。得られたポリカーボネートジオールP-7の水酸基価は、55.2mgKOH/gであった。また、得られたポリカーボネートジオールP-7の数平均分子量は、2033であった。
攪拌装置を備えた1Lのガラス製フラスコ(以下「反応器」とも記す)に、合成例1で得られたポリカーボネートジオールP-1を90質量部(360g)、及び、ポリオキシプロピレングリコール E-1(三洋化成工業株式会社製、「ニューポールPE-61」(商品名)、数平均分子量:約2000)を10質量部(40g)仕込んだ。次いで、これらを撹拌しながら加熱し、反応器内温度として約145℃で13時間維持した。次いで、ジブチルリン酸をチタンテトラ-n-ブトキシドに対して、質量比で1.3倍量になるよう加えて、反応器内温度として115℃で3時間加熱処理することによりポリカーボネートジオール組成物A-1を得た。なお、エステル交換反応については、反応溶液について経時的にゲルパーミエーションクロマトグラフィー(以下、「GPC」と略記する場合がある)測定を行い、原料に由来するピークの消失及び生成物に由来するピークの出現を経時的に確認することで、その反応の進行等を確認した。そして、最終的に得られたポリカーボネートジオール組成物については、原料の仕込み量に基づいて、ほぼ定量的に反応が進んでおり、それに対応する構造を有していることも、GPCの経時的測定によって確認した。
得られたポリカーボネートジオール組成物A-1の各物性を上記の方法により測定した。結果を表1に示す。得られたポリカーボネートジオール組成物A-1の水酸基価は、55.5mgKOH/gであった。また、得られたポリカーボネートジオール組成物A-1の数平均分子量は、2021であった。
各原料の種類、仕込み量をそれぞれ表1及び2に記載のとおりに変更したこと以外はすべて実施例1と同様の条件と方法で反応を行い、実施例2~19のポリカーボネートジオール組成物A-2~A-19を得た。得られたポリカーボネートジオール組成物A-2~A-19の各物性を上記の方法により測定した。結果を表1及び2に示す。
各原料の種類、仕込み量をそれぞれ表3に記載のとおりに変更したこと以外はすべて実施例1と同様の条件と方法で反応を行い、比較例1~4のポリカーボネートジオール組成物等B-1~B-4を得た。得られたポリカーボネートジオール組成物等B-1~B-4の各物性を上記の方法により測定した。結果を表3に示す。
熱電対と冷却管とを設置した500mlセパラブルフラスコに、ポリカーボネートジオール組成物A-1 38g、ジメチルホルムアミド(以下、DMFと略記することがある) 224g、1%ジブチル錫ジラウレートトルエン溶液 0.26g(MDIとポリカーボネートジオール組成物との合計質量に対して50ppm)を入れ、40℃のオイルバスで加温した。フラスコ内窒素雰囲気下100rpmでフラスコ内の溶液を攪拌しながら、MDIを14.8g(ポリカーボネートジオール組成物のOH[mol]に対し3.09倍[mol]))を滴下し、さらにフラスコ内の溶液を1.5時間程度攪拌した。イソシアネート基濃度を分析し、理論量消費されたことを確認し、プレポリマーを得た。続いて、残存イソシアネートより算出した必要量の1,4-ブタンジオール(1,4-BD)3.2gをフラスコ内に分割添加した。フラスコ内の溶液を約1時間攪拌後、エタノールを約1g添加し、さらにフラスコ内の溶液を30分攪拌し、数平均分子量71600のポリウレタン溶液を得た。
0.8mm厚アプリケーターを用い、ガラス板(JIS R3202、2mm×100mm×150mm)上に、得られたポリウレタン溶液を板上部に滴下し、乾燥膜厚が50~150μmになるよう塗工し、表面温度60℃のホットプレート上で2時間、続いて80℃のオーブン中で12時間乾燥させた。さらに23℃、55%RHの恒温恒湿下で12時間以上静置しポリウレタンフィルムPA-1を得た。得られたポリウレタンフィルムPA-1について上記の方法により各種物性の評価に供した。評価結果を表4に示す。
応用例1-1のポリウレタンフィルムの製造において、使用するポリカーボネートジオール組成物を実施例2~19で製造したポリカーボネートジオール組成物A-2~A-19に変更した以外は応用例1-1と同様の条件で反応を行い、ポリウレタンフィルムPA-2~PA-19を得た。得られたポリウレタンフィルムPA-2~PA-19について上記の方法により各種物性の評価に供した。評価結果を表4及び5に示す。
応用例1-1のポリウレタンフィルムの製造において、使用するポリカーボネートジオール組成物等を比較例1~4で製造したポリカーボネートジオール組成物等B-1~B-4に変更した以外は応用例1-1と同様の条件で反応を行い、ポリウレタンフィルムPB-1~PB-4を得た。得られたポリウレタンフィルムPB-1~PB-3について上記の方法により各種物性の評価に供した。評価結果を表4及び5に示す。
実施例1で得られたポリカーボネートジオール組成物A-1 16.8g、NCO/OHのモル比が1.0となるよう硬化剤としてポリイソシアネート(旭化成株式会社製、「TKA-100」(商品名)、NCO含有率21.7%)3.2g、並びに固形分70%になるように溶剤として酢酸ブチル 8.6g、をそれぞれ量り取って混合して塗料組成物を得た。得られた塗料組成物について、上記の方法により塗膜を作成して成膜性の評価を行った。評価結果を表7に示した。
応用例1-2の塗料組成物の製造において、使用するポリカーボネートジオール組成物を実施例2~19で製造したポリカーボネートジオール組成物A-2~A-19に変更した以外は応用例1-2と同様の条件で各塗料組成物を得た。得られた各塗料組成物について上記の方法により塗膜を作成して成膜性の評価を行った。評価結果を表7及び8に示した。
応用例1-2の塗料組成物の製造において、使用するポリカーボネートジオール組成物等を比較例1~4で製造したポリカーボネートジオール組成物等B-1~B-4に変更した以外は応用例1-2と同様の条件で各塗料組成物を得た。得られた各塗料組成物について上記の方法により塗膜を作成して成膜性の評価を行った。評価結果を表9に示した。
Claims (10)
- 下記一般式(I)で表される構造と、下記一般式(II)で表されるポリカーボネート構造とを有するポリカーボネートジオールを含有し、50℃における溶融粘度が1000~10000mPa・sであり、下記一般式(I)における繰り返し数n11の平均値が12以上であるポリカーボネートジオール組成物。
(一般式(I)中、R11は、炭素数2以上20以下の2価の直鎖状、分岐鎖状若しくは環状の脂肪族炭化水素基、又は、芳香族炭化水素基である。複数あるR11は互いに同一であってもよく、異なっていてもよい。n11は任意の整数である。)
(一般式(II)中、R21は、炭素数2以上15以下の2価の直鎖状、分岐鎖状若しくは環状の脂肪族炭化水素基、又は、芳香族炭化水素基である。複数あるR21は互いに同一であってもよく、異なっていてもよい。n21は任意の整数である。) - 前記一般式(I)における繰り返し数n11の平均値が15以上である請求項1に記載のポリカーボネートジオール組成物。
- 前記ポリカーボネートジオールの少なくとも一部が、前記一般式(II)におけるR21が炭素数2以上15以下の2価の直鎖状及び分岐鎖状の脂肪族炭化水素基からなる群より選ばれる少なくとも2種以上である請求項1又は2に記載のポリカーボネートジオール組成物。
- 前記一般式(I)におけるR11が直鎖状及び/又は分岐鎖状の炭素数3の2価の脂肪族炭化水素基である構造が、前記一般式(I)で表される構造のうち60質量%以上95質量%以下含む請求項1~3のいずれか1項に記載のポリカーボネートジオール組成物。
- 前記一般式(I)で表される構造及び前記一般式(II)で表されるポリカーボネート構造の合計質量に対して、前記一般式(I)で表される構造の含有量が5質量%以上40質量%以下であり、前記一般式(II)で表されるポリカーボネート構造の含有量が60質量%以上95質量%以下である請求項1~4のいずれか1項に記載のポリカーボネートジオール組成物。
- 示差走査熱量計により測定したガラス転移温度が-50℃以下である請求項1~5のいずれか1項に記載のポリカーボネートジオール組成物。
- 23℃における性状が液状かつ透明である請求項1~6のいずれか1項に記載のポリカーボネートジオール組成物。
- ゲル浸透クロマトグラフィーにより算出した前記ポリカーボネートジオール組成物の分子量計算結果のうち、数平均分子量(Mn)が1000以下の面積比(%)が7%以下である請求項1~7のいずれか1項に記載のポリカーボネートジオール組成物。
- 請求項1~8のいずれか1項に記載のポリカーボネートジオール組成物を用いてなるポリウレタン。
- 基布、接着層、中間層及び表皮層が順次積層された合成皮革であって、請求項9に記載のポリウレタンを含む合成皮革。
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