WO2012020735A1 - 撥水剤組成物、その製造方法、疎水性基材処理剤組成物および物品 - Google Patents
撥水剤組成物、その製造方法、疎水性基材処理剤組成物および物品 Download PDFInfo
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- WO2012020735A1 WO2012020735A1 PCT/JP2011/068078 JP2011068078W WO2012020735A1 WO 2012020735 A1 WO2012020735 A1 WO 2012020735A1 JP 2011068078 W JP2011068078 W JP 2011068078W WO 2012020735 A1 WO2012020735 A1 WO 2012020735A1
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- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F214/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen
- C08F214/18—Monomers containing fluorine
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- C08F214/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen
- C08F214/18—Monomers containing fluorine
- C08F214/184—Monomers containing fluorine with fluorinated vinyl ethers
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- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
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- C08K5/15—Heterocyclic compounds having oxygen in the ring
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- C08K5/20—Carboxylic acid amides
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- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/244—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of halogenated hydrocarbons
- D06M15/248—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of halogenated hydrocarbons containing chlorine
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- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/244—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of halogenated hydrocarbons
- D06M15/256—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of halogenated hydrocarbons containing fluorine
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- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/263—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated carboxylic acids; Salts or esters thereof
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- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/263—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated carboxylic acids; Salts or esters thereof
- D06M15/27—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated carboxylic acids; Salts or esters thereof of alkylpolyalkylene glycol esters of unsaturated carboxylic acids
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- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/263—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated carboxylic acids; Salts or esters thereof
- D06M15/277—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated carboxylic acids; Salts or esters thereof containing fluorine
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- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/327—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated alcohols or esters thereof
- D06M15/33—Esters containing fluorine
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- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/347—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated ethers, acetals, hemiacetals, ketones or aldehydes
- D06M15/353—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated ethers, acetals, hemiacetals, ketones or aldehydes containing fluorine
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- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
- C08F220/1804—C4-(meth)acrylate, e.g. butyl (meth)acrylate, isobutyl (meth)acrylate or tert-butyl (meth)acrylate
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- D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
- D06M2200/10—Repellency against liquids
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- D06M2200/10—Repellency against liquids
- D06M2200/12—Hydrophobic properties
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/3154—Of fluorinated addition polymer from unsaturated monomers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31855—Of addition polymer from unsaturated monomers
- Y10T428/31938—Polymer of monoethylenically unsaturated hydrocarbon
Definitions
- the present invention relates to a water repellent composition, a production method thereof, a hydrophobic substrate treating agent composition, and an article obtained by treating a hydrophobic substrate with a hydrophobic substrate treating agent composition.
- hydrophobic base materials such as polypropylene nonwoven fabric are used. Medical gowns are also required to have antistatic properties and alcohol repellency. Therefore, in order to impart alcohol repellency, the hydrophobic substrate is treated with a fluorinated water repellent containing a fluorinated copolymer. In order to impart antistatic properties, the hydrophobic substrate is treated with an antistatic agent. In addition, since the antistatic agent is hydrophilic, treatment with the antistatic agent reduces the water repellency of the hydrophobic substrate itself, but at the same time suppresses the decrease in water repellency with the fluorine water repellent used together. ing.
- R F group perfluoroalkyl group having carbon atoms
- the water repellent composition containing the fluorine-containing copolymer for example, the following water repellent composition has been proposed.
- Fluorine-containing component having a structural unit based on (meth) acrylate having an R 3 F group having 6 carbon atoms, a structural unit based on (meth) acrylate having an alkyl group having 8 to 40 carbon atoms, and a structural unit based on vinylidene chloride
- a water repellent composition containing a copolymer see Patent Document 1.
- the water repellency and alcohol repellency which are reduced by replacing the R F group having 8 or more carbon atoms with an R F group having 6 carbon atoms, have a long chain alkyl having 8 or more carbon atoms. Compensated by the group.
- the fluorine-containing copolymer having a long-chain alkyl group having 8 or more carbon atoms reduces the antistatic property imparted to the hydrophobic substrate by the antistatic agent. Therefore, it is necessary to increase the amount of the antistatic agent used for the treatment of the hydrophobic substrate.
- the amount of the antistatic agent is increased, the hydrophilicity of the hydrophobic substrate is increased, and not only the water repellency but also the alcohol repellency of the hydrophobic substrate is lowered.
- the present invention is a water repellent composition that can impart sufficient water repellency and alcohol repellency to a hydrophobic substrate without impairing the antistatic property imparted to the hydrophobic substrate by the antistatic agent, and has a low environmental load.
- the water repellent composition of the present invention is a water repellent composition used for the treatment of a hydrophobic substrate, and comprises a constitutional unit based on the following monomer (a) and a constitution based on the following monomer (b).
- a unit, and a fluorine-containing copolymer having a structural unit based on the following monomer (c) and a medium, and the proportion of the structural unit based on the monomer (a) is based on all monomers It is characterized by being 50 to 90% by mass of the structural unit (100% by mass).
- Z is a polyfluoroalkyl group having 1 to 6 carbon atoms or a group represented by the following formula (2)
- Y is a divalent organic group or a single bond
- n is 1 or 2 It is.
- X is any of the groups represented by the following formulas (3-1) to (3-5) when n is 1, and when n is 2, the formulas (4-1) to ( 4-4).
- i is an integer of 1 to 6
- j is an integer of 0 to 10
- X 1 and X 2 are each a fluorine atom or a trifluoromethyl group.
- R is a hydrogen atom, a methyl group, or a halogen atom, and ⁇ is a phenylene group.
- the fluorine-containing copolymer preferably further has a structural unit based on the following monomer (d).
- Monomer (d) a monomer having no polyfluoroalkyl group and having a functional group capable of crosslinking.
- the method for producing a water repellent composition of the present invention is a method for producing a water repellent composition used for the treatment of a hydrophobic substrate, and in the presence of a surfactant and a polymerization initiator in a medium,
- the following monomer mixture is polymerized.
- Monomer mixture including the monomer (a), the monomer (b), and the monomer (c), and the ratio of the monomer (a) is a monomer mixture (100 mass) %) Of 50-90% by mass Is a mixture.
- the monomer mixture further includes the monomer (d).
- the hydrophobic substrate treating agent composition of the present invention includes the water repellent composition of the present invention, a penetrant, and an antistatic agent.
- the article of the present invention is characterized in that a hydrophobic substrate is treated with the hydrophobic substrate treating agent composition of the present invention.
- the hydrophobic substrate is preferably a substrate made of polyolefin.
- the water repellent composition of the present invention can impart sufficient water repellency and alcohol repellency to a hydrophobic substrate without interfering with the antistatic property imparted to the hydrophobic substrate by the antistatic agent, and also has an environmental load. Is low.
- sufficient hydrophobicity and alcohol repellency are imparted to the hydrophobic substrate without interfering with the antistatic property imparted to the hydrophobic substrate by the antistatic agent.
- a water repellent composition having a low environmental load can simultaneously impart sufficient antistatic properties and sufficient water and alcohol repellency to a hydrophobic substrate and has a low environmental load.
- the article of the present invention has sufficient antistatic properties, water repellency and alcohol repellency, and has a low environmental load.
- a compound represented by the formula (1) is referred to as a compound (1).
- group represented by Formula (2) is described as group (2).
- Groups represented by other formulas are also described in the same manner.
- (meth) acrylate in this specification means an acrylate or a methacrylate.
- the monomer in this specification means the compound which has a polymerizable unsaturated group.
- the R f group is a group in which some or all of the hydrogen atoms of the alkyl group are substituted with fluorine atoms
- the R F group is a group in which all of the hydrogen atoms of the alkyl group are substituted with fluorine atoms. It is a group.
- the water repellent composition of the present invention contains a fluorine-containing copolymer and a medium as essential components, and optionally contains a surfactant and an additive.
- the fluorine-containing copolymer includes a structural unit based on the monomer (a), a structural unit based on the monomer (b), a structural unit based on the monomer (c), and a monomer ( It is a copolymer having a structural unit based on d) and a structural unit based on the monomer (e).
- Monomer (a) is compound (1).
- the boundary between Z and Y are defined as the number of carbon atoms of Z is minimized.
- Z is an R f group having 1 to 6 carbon atoms (provided that the R f group may contain an etheric oxygen atom) or a group (2).
- i is an integer of 1 to 6
- j is an integer of 0 to 10
- X 1 and X 2 are each independently a fluorine atom or a trifluoromethyl group.
- the R f group is preferably an R F group.
- the R f group may be linear, it may be branched, straight chain is preferred. Examples of Z include the following groups.
- k is an integer of 1 to 6
- h is an integer of 0 to 10.
- Y is a divalent organic group (excluding a polyfluoroalkylene group) or a single bond.
- an alkylene group is preferable.
- the alkylene group may be linear or branched.
- the alkylene group is —O—, —NH—, —CO—, —S—, —SO 2 —, —CD 1 ⁇ CD 2 — (wherein D 1 and D 2 are each independently a hydrogen atom or a methyl group) Or the like.
- Examples of Y include the following groups. —CH 2 —, —CH 2 CH 2 — -(CH 2 ) 3- , -CH 2 CH 2 CH (CH 3 )-, —CH ⁇ CH—CH 2 —, -S-CH 2 CH 2- , —CH 2 CH 2 —S—CH 2 CH 2 —, —CH 2 CH 2 —SO 2 —CH 2 CH 2 —, -W-OC (O) NH- A-NHC (O) O- (C p H 2p) - , or the like.
- p is an integer of 2 to 30.
- A is an unbranched contrasting alkylene group, arylene group or aralkylene group, and —C 6 H 12 —, — ⁇ —CH 2 — ⁇ —, — ⁇ — (where ⁇ is a phenylene group).
- W is any of the following groups. —SO 2 N (R 1 ) —C d H 2d —, -CONHC d H 2d -, —CH (R F1 ) —C e H 2e —, -C q H 2q- .
- R 1 is a hydrogen atom or an alkyl group having 1 to 4 carbon atoms
- d is an integer of 2 to 8
- R F1 is an R F group having 1 to 20 carbon atoms
- e is It is an integer from 0 to 6
- q is an integer from 1 to 20.
- R F1 is preferably an R F group having 1 to 6 carbon atoms, and more preferably an R F group having 4 or 6 carbon atoms.
- n is 1 or 2.
- X is any one of groups (3-1) to (3-5) when n is 1, and any one of groups (4-1) to (4-4) when n is 2. It is.
- R is a hydrogen atom, a methyl group, or a halogen atom, and ⁇ is a phenylene group.
- R is a hydrogen atom, methyl group or halogen atom, and m is an integer of 0-4.
- compound (1) polymerizability with other monomers, flexibility of a film containing a fluorinated copolymer, adhesion of the fluorinated copolymer to a hydrophobic substrate, dispersibility to a medium, emulsion polymerization from the viewpoint of the ease of, and preferably (meth) acrylate having a R F group of 4-6 carbon atoms.
- Z is an R F group having 4-6 carbon atoms
- Y is an alkylene group having 1 to 4 carbon atoms
- n is 1
- X is a group (3-3) preferably compound, more preferably a methacrylate having an R F group having 6 carbon atoms.
- the monomer (b) is a (meth) acrylate having no R f group and having an alkyl group having 1 to 6 carbon atoms.
- the monomer (b) is preferably a (meth) acrylate having an alkyl group having 1 to 4 carbon atoms, and more preferably n-butyl (meth) acrylate.
- Monomer (c) is a halogenated olefin. By having the structural unit based on the monomer (c), the adhesion to the substrate is improved, and the water repellency and alcohol repellency are further improved.
- Examples of the monomer (c) include tetrafluoroethylene, chlorotrifluoroethylene, vinylidene fluoride, vinyl fluoride, vinyl chloride, and vinylidene chloride. From the point that the cost of the fluorinated copolymer can be suppressed, Vinyl chloride and vinylidene chloride are preferable, and vinyl chloride is more preferable.
- the monomer (d) is a monomer having no functional group capable of crosslinking without having an R f group. By having structural units based on monomer (d), water repellency and alcohol repellency is further improved.
- the functional group capable of crosslinking is preferably a functional group having at least one bond among a covalent bond, an ionic bond and a hydrogen bond, or a functional group capable of forming a crosslinked structure by the interaction of the bonds. Further, it may be a compound having an active organic group or an element such as hydrogen or halogen in the molecule.
- the functional group include hydroxyl group, isocyanate group, blocked isocyanate group, alkoxysilyl group, amino group, alkoxymethylamide group, silanol group, ammonium group, amide group, epoxy group, oxazoline group, carboxyl group, alkenyl group, sulfone.
- An acid group and the like are preferable, and a hydroxyl group, a blocked isocyanate group, an amino group, and an epoxy group are particularly preferable.
- (meth) acrylates, acrylamides, vinyl ethers, vinyl esters are preferred.
- the monomer (d) the following compounds may be mentioned.
- t-butyl (meth) acrylamide sulfonic acid (meth) acrylamide, N-methyl (meth) acrylamide, N-methylol (meth) acrylamide, N-butoxymethyl (meth) acrylamide, diacetone (meth) acrylamide, glycidyl (meth) Acrylate, 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 4-hydroxybutyl (meth) acrylate, 3-chloro-2-hydroxypropyl methacrylate, polyalkylene glycol mono (meth) acrylate, polyalkylene Glycol di (meth) acrylate, (meth) acrylic acid, 2- (meth) acryloyloxyethyl succinic acid, 2- (meth) acryloyloxyhexahydrophthalic acid, 2- (meth) acryloyl Oxyethyl acid phosphate, allyl (meth) acrylate,
- the monomer (d) in terms of water repellency and alcohol repellency, compounds having an amide group, a hydroxyl group is preferred. Furthermore, the emulsion of a fluorine-containing copolymer can be stabilized by having an amide group, a hydroxyl group, or the like, which is a hydrophilic group, as the monomer (d). By stabilizing the emulsion of the fluorinated copolymer, the hydrophobic substrate can be treated uniformly, and water repellency and alcohol repellency are efficiently exhibited.
- the monomer (d) specifically, polyalkylene glycol mono (meth) acrylate, N-methylol (meth) acrylamide, and 2-hydroxyethyl (meth) acrylate are preferable.
- the monomer (e) is a monomer excluding the monomer (a), the monomer (b), the monomer (c), and the monomer (d).
- the monomer (e) any monomer that does not inhibit the effects of the present invention can be used.
- the monomer (a), the monomer (b), the monomer (c), and the monomer (d) Excluded are (meth) acrylates, acrylamides, vinyl ethers, vinyl esters and the like. However, it does not include the monomer having 8 or more alkyl groups monomers and the number of carbon atoms having a C 8 or more R F group.
- monomer (a) structural unit based on (meth) acrylate having 4 to 6 carbon atoms R F group
- single unit Mer a combination of structural units based on (meth) acrylates having 1 to 4 alkyl groups
- monomer (c) structural units based on vinyl chloride
- structural units based on monomer (d) Is preferred.
- the proportion of the structural unit based on the monomer (a) is 50 to 90% by mass of the structural unit based on all monomers (100% by mass) from the viewpoint of water repellency and alcohol repellency. It is more preferably ⁇ 80% by mass, particularly preferably 60 to 70% by mass.
- the proportion of the structural unit based on the monomer (b) is 5 to 45% by mass of the structural unit based on all monomers (100% by mass) from the viewpoint of water repellency and alcohol repellency, and 5% More preferably, it is preferably ⁇ 30% by mass, particularly preferably 5 ⁇ 20% by mass.
- the proportion of the structural unit based on the monomer (c) is 1% among the structural units based on all monomers (100% by mass) from the viewpoint of adhesion to the substrate and the cost of the fluorinated copolymer. To 45% by mass, more preferably 5 to 40% by mass, and particularly preferably 10 to 35% by mass.
- the proportion of the structural unit based on the monomer (d) is preferably 0 to 10% by mass in the structural unit based on all monomers (100% by mass). From the viewpoint of water repellency and alcohol repellency, 1 More preferably, it is ⁇ 8% by mass, and particularly preferably 1 to 5% by mass.
- the proportion of the structural unit based on the monomer (e) is preferably 0 to 20% by weight, more preferably 0 to 10% by weight, among the structural units based on all monomers (100% by weight).
- the proportion of structural units based on monomers in the present invention is determined from NMR (nuclear magnetic resonance) analysis and elemental analysis.
- NMR nuclear magnetic resonance
- the mass average molecular weight (Mw) of the fluorinated copolymer is preferably from 5,000 to 100,000, more preferably from 10,000 to 100,000. When the mass average molecular weight (Mw) of the fluorinated copolymer is 5,000 or more, the water repellency and alcohol repellency are good. When the mass average molecular weight (Mw) of the fluorinated copolymer is 100,000 or less, the film-forming property becomes good, and as a result, the water repellency and alcohol repellency can be sufficiently exhibited.
- the mass average molecular weight (Mw) of the fluorine-containing copolymer is a molecular weight in terms of polymethyl methacrylate, which is measured by gel permeation chromatography (GPC).
- Examples of the medium include water and organic solvents (alcohols, glycols, glycol ethers, halogen compounds, hydrocarbons, ketones, esters, ethers, nitrogen compounds, sulfur compounds, etc.), and water alone or a mixed medium containing water is preferable.
- Examples of the organic solvent (polymerization auxiliary solvent) used in combination with water include glycol organic solvents (dipropylene glycol, 3-methoxy-3-methyl-1-butanol, etc.), glycol ether organic solvents (dipropylene glycol monomethyl ether, etc.) Is particularly preferred.
- a medium may be used individually by 1 type, and 2 or more types may be mixed and used for it.
- surfactant examples include an anionic surfactant, a nonionic surfactant, a cationic surfactant, and an amphoteric surfactant.
- the surfactant a known one may be used.
- Surfactant may be used individually by 1 type, and 2 or more types may be mixed and used for it.
- the compounding amount of the surfactant is preferably 1 to 10 parts by mass and more preferably 1 to 7 parts by mass with respect to the fluorine-containing copolymer (100 parts by mass).
- additives examples include various additives for known water repellent compositions.
- the water repellent composition of the present invention contains a monomer (a), a monomer (b), and a monomer (c) in the medium in the presence of a surfactant and a polymerization initiator.
- the monomer mixture containing the monomer (d) and the monomer (e) is polymerized to obtain an emulsion of a fluorine-containing copolymer, and then the emulsion is mixed with another medium as necessary. It is manufactured by a method of blending other surfactants and additives.
- Examples of the polymerization method include an emulsion polymerization method, a dispersion polymerization method, a suspension polymerization method, and the like, and an emulsion polymerization method is preferable. Moreover, batch polymerization may be sufficient and multistage polymerization may be sufficient. From the viewpoint of improving the yield of the fluorinated copolymer, it is preferable to pre-emulsify a mixture comprising a monomer, a surfactant and a medium before emulsion polymerization. For example, a mixture comprising a monomer, a surfactant and a medium is mixed and dispersed with a homomixer or a high-pressure emulsifier.
- the polymerization initiator examples include a thermal polymerization initiator, a photopolymerization initiator, a radiation polymerization initiator, a radical polymerization initiator, an ionic polymerization initiator, and the like, and a water-soluble or oil-soluble radical polymerization initiator is preferable.
- a general-purpose initiator such as an azo polymerization initiator, a peroxide polymerization initiator, or a redox initiator is used depending on the polymerization temperature.
- an azo compound is particularly preferable.
- the polymerization temperature is preferably 20 to 150 ° C.
- the addition amount of the polymerization initiator is preferably 0.1 to 5 parts by mass, more preferably 0.1 to 3 parts by mass with respect to 100 parts by mass of the monomer mixture.
- a molecular weight modifier may be used.
- aromatic compounds, mercapto alcohols or mercaptans are preferable, and alkyl mercaptans are particularly preferable.
- the molecular weight modifier include mercaptoethanol, n-octyl mercaptan, n-dodecyl mercaptan, t-dodecyl mercaptan, stearyl mercaptan, ⁇ -methylstyrene dimer (CH 2 ⁇ C (Ph) CH 2 C (CH 3 ) 2 Ph ( Ph is a phenyl group))) and the like.
- the addition amount of the molecular weight modifier is preferably 0 to 5 parts by mass and more preferably 0 to 3 parts by mass with respect to 100 parts by mass of the monomer mixture.
- the monomer mixture may be polymerized in the presence of a polyfunctional mercapto compound such as 1,3,5-triazine-2,4,6 (1H, 3H, 5H) -trione.
- the ratio (mass%) of the charged amount of each monomer in the monomer mixture used in the polymerization is as follows.
- the proportion of the monomer (a) is 50 to 90% by mass, more preferably 55 to 80% by mass, in the monomer mixture (100% by mass) from the viewpoint of water repellency and alcohol repellency. ⁇ 70% by weight is particularly preferred.
- the proportion of the monomer (b) is 5 to 45% by mass in the monomer mixture (100% by mass) from the viewpoint of water repellency and alcohol repellency, more preferably 5 to 30% by mass. ⁇ 20% by weight is particularly preferred.
- the proportion of the monomer (c) is 1 to 45% by mass in the monomer mixture (100% by mass) from the viewpoint of adhesion to the substrate and the cost of the fluorinated copolymer, 40% by mass is more preferable, and 10 to 35% by mass is particularly preferable.
- the proportion of the monomer (d) is preferably 0 to 10% by mass in the monomer mixture (100% by mass), more preferably 1 to 8% by mass from the viewpoint of water repellency and alcohol repellency. ⁇ 5% by weight is particularly preferred.
- the proportion of the monomer (e) is preferably 0 to 20% by mass and more preferably 0 to 10% by mass in the monomer mixture (100% by mass).
- the fluorine-containing copolymer is preferably dispersed as particles in the medium.
- the average particle size of the fluorinated copolymer is preferably from 50 to 1000 nm, more preferably from 50 to 200 nm. If the average particle size is 50 nm or more, it is not necessary to use a large amount of surfactant. If the average particle size is 200 nm or less, the film-forming property is good, and as a result, the water repellency and alcohol repellency can be sufficiently exhibited.
- the average particle size of the fluorinated copolymer can be measured with a dynamic light scattering device, an electron microscope or the like.
- the solid content concentration of the water repellent composition is preferably 20 to 40 mass%, more preferably 35 to 40 mass% in the water repellent composition (100 mass%) immediately after production.
- concentration is a density
- the solid content concentration of the water repellent composition is calculated from the mass of the water repellent composition before heating and the mass after drying for 4 hours in a convection dryer at 120 ° C.
- the water repellent composition of the present invention has a constitutional unit based on the monomer having a short chain alkyl group (b) and a monomer having an alkyl group having 8 or more carbon atoms. Since the fluorine-containing copolymer having no unit is contained, the antistatic property imparted to the hydrophobic substrate by the antistatic agent is not hindered. In addition, regarding water repellency and alcohol repellency that has been conventionally supplemented by a long-chain alkyl group having 8 or more carbon atoms, the proportion of the structural units based on the monomer (a) is the structural unit based on all monomers. By setting it to 50% by mass or more in (100% by mass), it is maintained at a sufficient level.
- the fluorine-containing copolymer has a structural unit based on the monomer (a) and a structural unit based on the monomer (b), and has a carbon number. Since it does not have a structural unit based on a monomer having 8 or more R F groups, the environmental load can be kept low. Specifically, the content of perfluorooctanoic acid (PFOA), perfluorooctane sulfonic acid (PFOS) and its precursors and analogs whose solids have a solid content concentration of 20% has been pointed out as having an impact on the environment. (Quantity) can be made below the detection limit as an analytical value of LC-MS / MS (liquid chromatography / mass spectrometry) by the method described in WO2009 / 081822.
- PFOA perfluorooctanoic acid
- PFOS perfluorooctane sulfonic acid
- the hydrophobic substrate treating agent composition of the present invention includes the water repellent composition of the present invention, a penetrating agent, and an antistatic agent.
- the hydrophobic substrate treating agent composition of the present invention is obtained by diluting the water repellent composition of the present invention with a dilution medium as necessary, and then penetrating agent, antistatic agent, and other combination agent as necessary. It is prepared by blending.
- the solid content concentration of the diluted water repellent composition is preferably 0.2 to 5 mass%, more preferably 0.3 to 4 mass% in the diluted water repellent composition (100 mass%).
- Examples of the medium for dilution include water and organic solvents, and water alone or a mixed medium containing water is preferable.
- the water repellent composition of the present invention can be penetrated into the hydrophobic substrate.
- the penetrating agent include alcohols, anionic surfactants, nonionic surfactants, cationic surfactants, amphoteric surfactants, and the like.
- the penetrant has an alkyl group having 1 to 10 carbon atoms. Examples thereof include alcohol, polyoxyethylene alkyl ether, NRW-200 (manufactured by Mitsubishi International Polymer Trade Corporation), and the like.
- Penetrants may be used alone or may be used as a mixture of two or more.
- the concentration of the penetrating agent is preferably 0.01 to 1.0% by weight in the hydrophobic substrate treating agent composition (100% by weight).
- the penetrating agent has a permeability to the hydrophobic substrate, water repellency and alcohol repellency. From the viewpoint of achieving both, 0.1 to 0.5% by mass is more preferable.
- examples of the antistatic agent include anionic surfactants, nonionic surfactants, cationic surfactants, and amphoteric surfactants.
- examples of the anionic surfactant include a phosphate ester compound, for example, ZELEC TY (manufactured by Stepan), AS-300 (manufactured by Mitsubishi International Polymer Trade Corporation) as a butyl phosphate metal salt. It is done.
- examples of nonionic surfactants include polyoxyethylene compounds
- examples of cationic surfactants include alkylammonium chloride
- examples of amphoteric surfactants include amide alkylbetaine compounds.
- the concentration of the antistatic agent is preferably 0.01 to 1.0% by mass in the hydrophobic substrate treating agent composition (100% by mass), and both the effect of the antistatic agent and the water repellency and alcohol repellency are achieved. From this point, 0.1 to 0.5% by mass is more preferable.
- Examples of other concomitant agents include pH adjusters, flame retardants, softeners, anti-slip agents, anti-fray agents, anti-wrinkle agents, and anti-stain agents.
- the antistatic agent and the hydrophobic substrate can be sufficiently repelled without interfering with the antistatic property imparted to the hydrophobic substrate by the antistatic agent.
- the water-repellent composition of the present invention can impart water and alcohol repellency and has a low environmental load, so that the hydrophobic substrate has sufficient antistatic property and sufficient water and alcohol repellency. Can be granted at the same time. In addition, the environmental load can be reduced.
- the article of the present invention is obtained by treating a hydrophobic substrate with the hydrophobic substrate treating agent composition of the present invention.
- the material for the hydrophobic substrate include polyolefin (polypropylene, polyethylene, etc.), polyvinyl chloride, nylon, polyester, polystyrene, and the like.
- the form of the hydrophobic substrate include polyolefin nonwoven fabrics (polypropylene nonwoven fabric, polyethylene nonwoven fabric, polypropylene, polyethylene blended nonwoven fabric, etc.), nylon nonwoven fabrics, polyester nonwoven fabrics, etc., and polypropylene nonwoven fabrics are preferred as medical gowns.
- the treatment method for example, a method in which a hydrophobic substrate is immersed in the hydrophobic substrate treating agent composition of the present invention and then dried; the hydrophobic substrate treating agent composition of the present invention is subjected to foam processing to form a hydrophobic group.
- a method of drying after coating on the surface of the material a method of coating the surface of the hydrophobic substrate with a roll, blade, etc., and then drying the hydrophobic substrate treating agent composition of the present invention; a surface of the hydrophobic substrate
- a method of spraying the hydrophobic substrate treating agent composition of the present invention followed by drying.
- the hydrophobic substrate is obtained by treating with the hydrophobic substrate treating agent composition of the present invention, sufficient antistatic property, water repellency and alcohol repellency are obtained. And has a low environmental impact.
- THF tetrahydrofuran
- a solution was prepared and passed through a 0.2 ⁇ m filter to obtain an analysis sample. About this sample, the mass mean molecular weight (Mw) was measured.
- the measurement conditions are as follows.
- the average particle size of the fluorinated copolymer in the emulsion was measured using a light scattering device (FPAR-1000, manufactured by Otsuka Electronics Co., Ltd.).
- LA Lauryl acrylate (LA, Osaka Organic Chemical Industry Co., Ltd.)
- STA stearyl acrylate (manufactured by NOF Corporation, STA), BeA: Behenyl acrylate (manufactured by NOF Corporation, Blemmer VA).
- PE-350 Polyethylene glycol monomethacrylate (manufactured by Nippon Oil & Fats Co., Ltd., Bremer PE-350, ethylene oxide addition mole number 8, containing about 10% by mass of polyethylene glycol dimethacrylate), N-MAM: N-methylolacrylamide (Kasano Kosan Co., N-MAM).
- Surfactant Aq-18: monostearyltrimethylammonium chloride (manufactured by Lion Akzo, ARCARD 18-63), P-204: ethylene oxide propylene oxide polymer (manufactured by NOF Corporation, Plonon 204, proportion of ethylene oxide: 40 wt%), AM3130N: coconut oil fatty acid amidopropyl betaine solution (manufactured by Nippon Surfactant, NIKKOL AM-3130N), E430: polyoxyethylene oleyl ether (manufactured by Kao Corporation, Emulgen 430, ethylene oxide addition mole number 30),
- DoSH n-dodecyl mercaptan
- VA-061 2,2′-azobis [2- (2-imidazolin-2-yl) propane] (manufactured by Wako Pure Chemical Industries, Ltd., VA-061).
- Polymerization auxiliary solvent DPG: Dipropylene glycol, Solfit: 3-methoxy-3-methyl-1-butanol (manufactured by Kuraray Co., Ltd.)
- DPM Dipropylene glycol monomethyl ether (manufactured by Kyowa Hakko Chemical Co., Ltd., Akosorubu DPM).
- Example 1 In a glass autoclave, 209.5 g of C6FMA, 34.9 g of BMA, 6.98 g of PE-350, 3.1 g of P-204, 3.1 g of AM3130N, 10.8 g of E-430, 434 water .2 g, 104.8 g of DPG, and 3.5 g of DoSH, and after heating at 60 ° C. for 60 minutes, pretreat at 10 MPa using a high-pressure emulsifier (manufactured by Nippon Seiki Co., Ltd.) The emulsion was obtained by processing.
- a high-pressure emulsifier manufactured by Nippon Seiki Co., Ltd.
- Example 2 A water repellent composition comprising an emulsion was obtained in the same manner as in Example 1 except that PE-350 was changed to 0 g and VCM was changed to 83.0 g.
- Example 3 A water repellent composition comprising an emulsion was obtained in the same manner as in Example 1 except that C6FMA was changed to 244.4 g, BMA was changed to 69.8 g, and VCM was changed to 22.4 g.
- Example 4 Except for changing the PE-350 to N-MAM got water repellent composition comprising the emulsion in the same manner as in Example 1.
- Example 5 A water repellent composition comprising an emulsion was obtained in the same manner as in Example 1 except that BMA was changed to BA.
- Example 6 A water repellent composition comprising an emulsion was obtained in the same manner as in Example 1 except that AM3130N was changed to Aq-18.
- Example 7 A water repellent composition comprising an emulsion was obtained in the same manner as in Example 1 except that C6FMA was changed to 139.7 g and BMA was changed to 104.8 g.
- Example 8 Except for changing the BMA to LA was obtained water repellent composition comprising the emulsion in the same manner as in Example 1.
- Example 9 A water repellent composition comprising an emulsion was obtained in the same manner as in Example 1 except that BMA was changed to STA.
- Example 10 Except for changing the BMA to BeA obtained a water repellent composition comprising the emulsion in the same manner as in Example 1.
- the water repellent composition is diluted with water so that the solid content concentration becomes 0.25% by mass, and a penetrant (manufactured by Mitsubishi International Polymer Corporation, NRW-200) becomes a concentration of 0.25% by mass. Further, an antistatic agent (manufactured by Mitsubishi International Polymer Trade Corporation, AS-300) was added to a concentration of 0.3% by mass to obtain a hydrophobic substrate treating agent composition. After immersing the polypropylene nonwoven fabric (basis weight: 63 g / m 2 ) in the hydrophobic substrate treating agent composition, excess liquid was removed with a mangle. The standard pickup was 140%. The polypropylene nonwoven fabric was heat treated at 125 ° C. for 4 minutes to obtain a sample for evaluation. The samples were evaluated for water repellency (water pressure resistance), alcohol repellency, and surface electrical resistance (antistatic properties). The results are summarized in Tables 2 and 3.
- the water repellent composition of the present invention has a low environmental load and is useful as a material for imparting water repellency and alcohol repellency to a polypropylene nonwoven fabric used for medical gowns without interfering with antistatic properties.
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Abstract
Description
炭素数が6のRF基を有する(メタ)アクリレートに基づく構成単位、炭素数が8~40のアルキル基を有する(メタ)アクリレートに基づく構成単位、および塩化ビニリデンに基づく構成単位を有する含フッ素共重合体を含む撥水剤組成物(特許文献1参照)。
しかし、帯電防止剤の量を増やすと、疎水性基材の親水性が高くなり、疎水性基材の撥水性だけではなく撥アルコール性も低下してしまう。
単量体(a):下式(1)で表される化合物。
(Z-Y)nX ・・・(1)。
ただし、Zは、炭素数が1~6のポリフルオロアルキル基、または下式(2)で表される基であり、Yは、2価有機基または単結合であり、nは、1または2である。Xは、nが1の場合は、下式(3-1)~(3-5)で表される基のいずれかであり、nが2の場合は、下式(4-1)~(4-4)で表される基のいずれかである。
CiF2i+1O(CFX1CF2O)jCFX2- ・・・(2)。
ただし、iは、1~6の整数であり、jは、0~10の整数であり、X1およびX2は、それぞれフッ素原子またはトリフルオロメチル基である。
-CR=CH2 ・・・(3-1)、
-C(O)OCR=CH2 ・・・(3-2)、
-OC(O)CR=CH2 ・・・(3-3)、
-OCH2-φ-CR=CH2 ・・・(3-4)、
-OCH=CH2 ・・・(3-5)。
ただし、Rは、水素原子、メチル基またはハロゲン原子であり、φはフェニレン基である。
-CH[-(CH2)mCR=CH2]- ・・・(4-1)、
-CH[-(CH2)mC(O)OCR=CH2]- ・・・(4-2)、
-CH[-(CH2)mOC(O)CR=CH2]- ・・・(4-3)、
-OC(O)CH=CHC(O)O- ・・・(4-4)。
ただし、Rは、水素原子、メチル基またはハロゲン原子であり、mは0~4の整数である。
単量体(b):ポリフルオロアルキル基を有さず、炭素数が1~6のアルキル基を有する(メタ)アクリレート。
単量体(c):ハロゲン化オレフィン。
単量体(d):ポリフルオロアルキル基を有さず、架橋しうる官能基を有する単量体。
単量体混合物:前記単量体(a)、前記単量体(b)、および前記単量体(c)を含み、前記単量体(a)の割合が、単量体混合物(100質量%)のうち、50~90質量%
である混合物。
本発明の物品は、疎水性基材を、本発明の疎水性基材処理剤組成物で処理してなるものであることを特徴とする。
前記疎水性基材は、ポリオレフィンからなる基材であることが好ましい。
本発明の撥水剤組成物の製造方法によれば、帯電防止剤によって疎水性基材に付与される帯電防止性を妨げることなく、疎水性基材に充分な撥水性および撥アルコール性を付与でき、かつ環境負荷が低い撥水剤組成物を製造できる。
本発明の疎水性基材処理剤組成物は、疎水性基材に、充分な帯電防止性と充分な撥水性および撥アルコール性と、を同時に付与でき、かつ環境負荷が低い。
本発明の物品は、充分な帯電防止性、撥水性および撥アルコール性を有し、かつ環境負荷が低い。
本発明の撥水剤組成物は、含フッ素共重合体と、媒体とを必須成分として含み、必要に応じて、界面活性剤、添加剤を含む。
含フッ素共重合体は、単量体(a)に基づく構成単位、単量体(b)に基づく構成単位、および単量体(c)に基づく構成単位、必要に応じて、単量体(d)に基づく構成単位、単量体(e)に基づく構成単位を有する共重合体である。
単量体(a)は、化合物(1)である。なお、式(1)において、ZとYの境界はZの炭素数が最も少なくなるように定める。
(Z-Y)nX ・・・(1)。
CiF2i+1O(CFX1CF2O)jCFX2- ・・・(2)。
ただし、iは、1~6の整数であり、jは、0~10の整数であり、X1およびX2は、それぞれ独立にフッ素原子またはトリフルオロメチル基である。
Rf基としては、RF基が好ましい。Rf基は、直鎖状であってもよく、分岐状であってもよく、直鎖状が好ましい。
Zとしては、下記の基が挙げられる。
F(CF2)4-、
F(CF2)5-、
F(CF2)6-、
(CF3)2CF(CF2)2-、
CkF2k+1O[CF(CF3)CF2O]h-CF(CF3)-等。
ただし、kは、1~6の整数であり、hは0~10の整数である。
2価有機基としては、アルキレン基が好ましい。アルキレン基は、直鎖状であってもよく、分岐状であってもよい。アルキレン基は、-O-、-NH-、-CO-、-S-、-SO2-、-CD1=CD2-(ただし、D1、D2は、それぞれ独立に水素原子またはメチル基である。)等を有していてもよい。
-CH2-、
-CH2CH2-
-(CH2)3-、
-CH2CH2CH(CH3)-、
-CH=CH-CH2-、
-S-CH2CH2-、
-CH2CH2-S-CH2CH2-、
-CH2CH2-SO2-CH2CH2-、
-W-OC(O)NH-A-NHC(O)O-(CpH2p)-等。
ただし、pは、2~30の整数である。
Aは、分岐のない対照的なアルキレン基、アリレン基またはアラルキレン基であり、-C6H12-、-φ-CH2-φ-、-φ-(ただし、φはフェニレン基である。)が好ましい。
Wは、下記の基のいずれかである。
-SO2N(R1)-CdH2d-、
-CONHCdH2d-、
-CH(RF1)-CeH2e-、
-CqH2q-。
ただし、R1は、水素原子または炭素数1~4のアルキル基であり、dは、2~8の整数であり、RF1は、炭素数1~20のRF基であり、eは、0~6の整数であり、qは、1~20の整数である。RF1としては、炭素数1~6のRF基が好ましく、炭素数4または6のRF基がより好ましい。
Xは、nが1の場合は、基(3-1)~(3-5)のいずれかであり、nが2の場合は、基(4-1)~(4-4)のいずれかである。
-C(O)OCR=CH2 ・・・(3-2)、
-OC(O)CR=CH2 ・・・(3-3)、
-OCH2-φ-CR=CH2 ・・・(3-4)、
-OCH=CH2 ・・・(3-5)。
ただし、Rは、水素原子、メチル基またはハロゲン原子であり、φはフェニレン基である。
-CH[-(CH2)mC(O)OCR=CH2]- ・・・(4-2)、
-CH[-(CH2)mOC(O)CR=CH2]- ・・・(4-3)、
-OC(O)CH=CHC(O)O- ・・・(4-4)。
ただし、Rは、水素原子、メチル基またはハロゲン原子であり、mは0~4の整数である。
化合物(1)としては、Zが炭素数4~6のRF基であり、Yが炭素数1~4のアルキレン基であり、nが1であり、Xが基(3-3)である化合物が好ましく、炭素数6のRF基を有するメタクリレートがより好ましい。
単量体(b)は、Rf基を有さず、炭素数が1~6のアルキル基を有する(メタ)アクリレートである。
単量体(b)に基づく構成単位を有することにより、撥水性および撥アルコール性を維持しつつ、基材の塗布する際の帯電防止剤の量を低減することができる。また、含フッ素共重合体のコストを抑えることもできる。
単量体(b)としては、炭素数が1~4のアルキル基を有する(メタ)アクリレートが好ましく、n-ブチル(メタ)アクリレートがより好ましい。
単量体(c)は、ハロゲン化オレフィンである。
単量体(c)に基づく構成単位を有することにより、基材への密着性が向上し、撥水性および撥アルコール性がさらに向上する。
単量体(c)としては、テトラフルオロエチレン、クロロトリフルオロエチレン、フッ化ビニリデン、フッ化ビニル、塩化ビニル、塩化ビニリデンが挙げられ、含フッ素共重合体のコストを抑えることができる点から、塩化ビニル、塩化ビニリデンが好ましく、塩化ビニルがより好ましい。
単量体(d)は、Rf基を有さず、架橋しうる官能基を有する単量体である。
単量体(d)に基づく構成単位を有することにより、撥水性および撥アルコール性がさらに向上する。
該官能基としては、水酸基、イソシアネート基、ブロックドイソシアネート基、アルコキシシリル基、アミノ基、アルコキシメチルアミド基、シラノール基、アンモニウム基、アミド基、エポキシ基、オキサゾリン基、カルボキシル基、アルケニル基、スルホン酸基等が好ましく、水酸基、ブロックドイソシアネート基、アミノ基、エポキシ基が特に好ましい。
単量体(d)としては、下記の化合物が挙げられる。
単量体(d)として、具体的には、ポリアルキレングリコールモノ(メタ)アクリレート、N-メチロール(メタ)アクリルアミド、2-ヒドロキシエチル(メタ)アクリレートが好ましい。
単量体(e)は、単量体(a)、単量体(b)、単量体(c)および単量体(d)を除く単量体である。単量体(e)としては、本発明の効果を阻害しないものであればよく、単量体(a)、単量体(b)、単量体(c)および単量体(d)を除く(メタ)アクリレート類、アクリルアミド類、ビニルエーテル類、ビニルエステル類等が挙げられる。ただし、炭素数が8以上のRF基を有する単量体および炭素数が8以上のアルキル基を有する単量体は含まれない。
単量体(b)に基づく構成単位の割合は、撥水性および撥アルコール性の点から、全ての単量体に基づく構成単位(100質量%)のうち、5~45質量%であり、5~30質量%がより好ましく、5~20質量%が特に好ましい。
単量体(c)に基づく構成単位の割合は、基材への密着性および含フッ素共重合体のコストの点から、全ての単量体に基づく構成単位(100質量%)のうち、1~45質量%であり、5~40質量%がより好ましく、10~35質量%が特に好ましい。
単量体(e)に基づく構成単位の割合は、全ての単量体に基づく構成単位(100質量%)のうち、0~20質量%が好ましく、0~10質量%がより好ましい。
含フッ素共重合体の質量平均分子量(Mw)は、ゲルパーミエイションクロマトグラフィ(GPC)で測定される、ポリメチルメタクリレート換算の分子量である。
媒体としては、水、有機溶媒(アルコール、グリコール、グリコールエーテル、ハロゲン化合物、炭化水素、ケトン、エステル、エーテル、窒素化合物、硫黄化合物等)が挙げられ、水のみまたは水を含む混合媒体が好ましい。水と併用される有機溶媒(重合補助溶媒)としては、グリコール系有機溶媒(ジプロピレングリコール、3-メトキシ-3-メチル-1-ブタノール等)、グリコールエーテル系有機溶媒(ジプロピレングリコールモノメチルエーテル等)が特に好ましい。
媒体は、1種を単独で用いてもよく、2種以上を混合して用いてもよい。
界面活性剤としては、アニオン性界面活性剤、ノニオン性界面活性剤、カチオン性界面活性剤、両性界面活性剤等が挙げられる。
界面活性剤としては、公知のものを用いればよい。
界面活性剤は、1種を単独で用いてもよく、2種以上を混合して用いてもよい。
界面活性剤の配合量は、含フッ素共重合体(100質量部)に対して、1~10質量部が好ましく、1~7質量部がより好ましい。
添加剤としては、公知の撥水剤組成物用の各種添加剤が挙げられる。
本発明の撥水剤組成物は、界面活性剤および重合開始剤の存在下、媒体中にて単量体(a)、単量体(b)、および単量体(c)を含み、必要に応じて、単量体(d)、単量体(e)を含む単量体混合物を重合して含フッ素共重合体のエマルションを得た後、該エマルションに、必要に応じて他の媒体、他の界面活性剤、添加剤を配合する方法によって製造される。
含フッ素共重合体の収率が向上する点から、乳化重合の前に、単量体、界面活性剤および媒体からなる混合物を前乳化することが好ましい。たとえば、単量体、界面活性剤および媒体からなる混合物を、ホモミキサーまたは高圧乳化機で混合分散する。
ラジカル重合開始剤としては、アゾ系重合開始剤、過酸化物系重合開始剤、レドックス系開始剤等の汎用の開始剤が、重合温度に応じて用いられる。ラジカル重合開始剤としては、アゾ系化合物が特に好ましい。重合温度は20~150℃が好ましい。
重合開始剤の添加量は、単量体混合物の100質量部に対して、0.1~5質量部が好ましく、0.1~3質量部がより好ましい。
分子量調整剤の添加量は、単量体混合物の100質量部に対して、0~5質量部が好ましく、0~3質量部がより好ましい。
単量体(a)の割合は、撥水性および撥アルコール性の点から、単量体混合物(100質量%)のうち、50~90質量%であり、55~80質量%がより好ましく、60~70質量%が特に好ましい。
単量体(b)の割合は、撥水性および撥アルコール性の点から、単量体混合物(100質量%)のうち、5~45質量%であり、5~30質量%がより好ましく、5~20質量%が特に好ましい。
単量体(c)の割合は、基材への密着性および含フッ素共重合体のコストの点から、単量体混合物(100質量%)のうち、1~45質量%であり、5~40質量%がより好ましく、10~35質量%が特に好ましい。
単量体(e)の割合は、単量体混合物(100質量%)のうち、0~20質量%が好ましく、0~10質量%がより好ましい。
含フッ素共重合体の平均粒子径は、動的光散乱装置、電子顕微鏡等により測定できる。
撥水剤組成物の固形分濃度は、加熱前の撥水剤組成物の質量と、120℃の対流式乾燥機にて4時間乾燥した後の質量とから計算される。
本発明の撥水剤組成物にあっては、短鎖のアルキル基を有する単量体(b)に基づく構成単位を有し、炭素数が8以上のアルキル基を有する単量体に基づく構成単位を有さない含フッ素共重合体を含むため、帯電防止剤によって疎水性基材に付与される帯電防止性を妨げることがない。なお、従来では炭素数が8以上の長鎖アルキル基によって補っていた撥水性および撥アルコール性については、単量体(a)に基づく構成単位の割合を、全ての単量体に基づく構成単位(100質量%)のうち、50質量%以上とすることによって、充分なレベルに維持している。
本発明の疎水性基材処理剤組成物は、本発明の撥水剤組成物と、浸透剤と、帯電防止剤とを含む。
本発明の疎水性基材処理剤組成物は、本発明の撥水剤組成物を、必要に応じて希釈用媒体で希釈した後、浸透剤、帯電防止剤、必要に応じて他の併用剤を配合することにより調製される。
希釈用の媒体としては、水、有機溶媒が挙げられ、水のみまたは水を含む混合媒体が好ましい。
浸透剤としては、アルコール、アニオン性界面活性剤、ノニオン性界面活性剤、カチオン性界面活性剤、両性界面活性剤等が挙げられ、具体的には、炭素数が1~10のアルキル基を有するアルコール、ポリオキシエチレンアルキルエーテル、NRW-200(Mitsubishi International PolymerTrade Corporation社製)等が挙げられる。浸透剤は、1種を単独で用いてもよく、2種以上を混合して用いてもよい。
浸透剤の濃度は、疎水性基材処理剤組成物(100質量%)中、0.01~1.0質量%が好ましく、疎水性基材への浸透性と、撥水性および撥アルコール性との両立の点から、0.1~0.5質量%がより好ましい。
帯電防止剤の濃度は、疎水性基材処理剤組成物(100質量%)中、0.01~1.0質量%が好ましく、帯電防止剤の効果と、撥水性および撥アルコール性との両立の点から、0.1~0.5質量%がより好ましい。
本発明の物品は、疎水性基材を、本発明の疎水性基材処理剤組成物で処理してなるものである。
疎水性基材の材料としては、ポリオレフィン(ポリプロピレン、ポリエチレン等)、ポリ塩化ビニル、ナイロン、ポリエステル、ポリスチレン等が挙げられる。
疎水性基材の形態としては、ポリオレフィン不織布(ポリプロピレン不織布、ポリエチレン不織布、ポリプロピレン、ポリエチレン混紡不織布等)、ナイロン不織布、ポリエステル不織布等が挙げられ、医療用ガウンとしてはポリプロピレン不織布が好ましい。
例1~6は実施例であり、例7~10は比較例である。
下記の回収方法にて回収された含フッ素共重合体について、分子量の測定を行った。
(回収方法)
エマルションの6gを、2-プロパノール(以下、IPAと記す。)の60gに滴下し、撹拌して固体を析出させた。3000rpmで5分間遠心分離した後、得られた固体をデカントした。再度、IPAの12gを加えてよく撹拌した。3000rpmで5分間遠心分離した後、得られた固体を上澄み液から分離し、35℃で一晩真空乾燥して共重合体を得た。
回収した含フッ素共重合体を、フッ素系溶媒(旭硝子社製、AK-225)/テトラヒドロフラン(以下、THFと記す。)=6/4(体積比)の混合溶媒に溶解させ、1質量%の溶液とし、0.2μmのフィルタに通し、分析サンプルとした。該サンプルについて、質量平均分子量(Mw)を測定した。測定条件は下記のとおりである。
カラム:Polymer laboratories社製、MIXED-Cおよび100Aを直列でつなげたもの、
測定温度:37℃、
注入量:50μL、
流出速度:1mL(ミリリットル)/分、
標準試料:Polymer laboratories社製、EasiCalPM-2、
溶離液:フッ素系溶媒(旭硝子社製、AK-225)/THF=6/4(体積比)の混合溶媒。
エマルション中の含フッ素共重合体の平均粒子径は、光散乱装置(大塚電子社製、FPAR-1000)を用いて測定した。
(耐水圧)
Worldwide Strategic Partners(以下、WSPと記す。)80.1にしたがい、昇圧速度:60mbar/分の条件で、三点水滴が通過した圧力、または評価用サンプルが破断した圧力を耐水圧とした。
WSP80.8にしたがい、表1に示す混合比のイソプロピルアルコール/水の混合溶媒を、評価用サンプル上に滴下し、5分間浸透しなかった混合溶媒の表1中のナンバーの最大の数値を評価値とした。
WSP40.1にしたがい、評価用サンプルに荷電圧(100V)を印加し、30秒後の表面電気抵抗値を測定した。
単量体(a):
C6FMA:C6F13C2H4OC(O)C(CH3)=CH2。
BA:n-ブチルアクリレート(関東化学社製)、
BMA:n-ブチルメタクリレート(関東化学社製)。
LA:ラウリルアクリレート(大阪有機化学工業社製、LA)、
STA:ステアリルアクリレート(日油社製、STA)、
BeA:ベヘニルアクリレート(日油社製、ブレンマーVA)。
VCM:塩化ビニル。
PE-350:ポリエチレングリコールモノメタクリレート(日本油脂社製、ブレンマーPE-350、エチレンオキシド付加モル数8、ポリエチレングリコールジメタクリレートを約10質量%含む。)、
N-MAM:N-メチロールアクリルアミド(笠野興産社製、N-MAM)。
Aq-18:モノステアリルトリメチルアンモニウムクロリド(ライオン・アクゾ社製、アーカード18-63)、
P-204:エチレンオキシドプロピレンオキシド重合物(日本油脂社製、プロノン204、エチレンオキシドの割合:40質量%)、
AM3130N:ヤシ油脂肪酸アミドプロピルベタイン液(日本サーファクタント社製、NIKKOL AM-3130N)、
E430:ポリオキシエチレンオレイルエーテル(花王社製、エマルゲン430、エチレンオキシド付加モル数30)、
DoSH:n-ドデシルメルカプタン。
VA-061:2,2'-アゾビス[2-(2-イミダゾリン-2-イル)プロパン](和光純薬社製、VA-061)。
水:イオン交換水。
DPG:ジプロピレングリコール、
ソルフィット:3-メトキシ-3-メチル-1-ブタノール(クラレ社製)、
DPM:ジプロピレングリコールモノメチルエーテル(協和発酵ケミカル社製、アーコソルブDPM)。
ガラス製オートクレーブに、C6FMAの209.5g、BMAの34.9g、PE-350の6.98g、P-204の3.1g、AM3130Nの3.1g、E-430の10.8g、水の434.2g、DPGの104.8g、およびDoSHの3.5gを入れて、60℃で60分間加温した後、高圧乳化機(日本精機社製)を用いて10MPaで前処理し、40MPaで本処理して乳化液を得た。
得られた乳化液の714.8gを、ステンレス製反応容器に入れ、VA-061の1.4gを加えて、30℃以下に冷却した。気相を窒素置換し、VCMの78.2gを導入した後、撹拌しながら55℃で1時間、60℃で10時間重合反応を行い、固形分濃度34.0質量%のエマルションからなる撥水剤組成物を得た。
PE-350を0g、VCMを83.0gに変更した以外は、例1と同様にしてエマルションからなる撥水剤組成物を得た。
C6FMAを244.4g、BMAを69.8g、およびVCMを22.4gに変更した以外は、例1と同様にしてエマルションからなる撥水剤組成物を得た。
PE-350をN-MAMに変更した以外は、例1と同様にしてエマルションからなる撥水剤組成物を得た。
BMAをBAに変更した以外は、例1と同様にしてエマルションからなる撥水剤組成物を得た。
AM3130NをAq-18に変更した以外は、例1と同様にしてエマルションからなる撥水剤組成物を得た。
C6FMAを139.7g、BMAを104.8gに変更した以外は、例1と同様にしてエマルションからなる撥水剤組成物を得た。
BMAをLAに変更した以外は、例1と同様にしてエマルションからなる撥水剤組成物を得た。
BMAをSTAに変更した以外は、例1と同様にしてエマルションからなる撥水剤組成物を得た。
BMAをBeAに変更した以外は、例1と同様にしてエマルションからなる撥水剤組成物を得た。
撥水剤組成物を、固形分濃度が0.25質量%になるように水で希釈し、浸透剤(Mitsubishi International PolymerTrade Corporation社製、NRW-200)を、濃度が0.25質量%となるように添加し、さらに帯電防止剤(Mitsubishi International PolymerTrade Corporation社製、AS-300)を、濃度が0.3質量%となるように添加して疎水性基材処理剤組成物を得た。
ポリプロピレン不織布(坪量:63g/m2)を疎水性基材処理剤組成物に浸漬した後、マングルで余分な液を除去した。標準ピックアップは140%とした。ポリプロピレン不織布を125℃で4分間熱処理し、評価用サンプルを得た。サンプルの撥水性(耐水圧)、撥アルコール性、および表面電気抵抗値(帯電防止性)を評価した。
結果を表2および3にまとめて示す。
なお、2010年8月11日に出願された日本特許出願2010-180244号の明細書、特許請求の範囲、及び要約書の全内容をここに引用し、本発明の明細書の開示として、取り入れるものである。
Claims (8)
- 疎水性基材の処理に用いられる撥水剤組成物であって、
下記単量体(a)に基づく構成単位、下記単量体(b)に基づく構成単位、および下記単量体(c)に基づく構成単位を有する含フッ素共重合体と、媒体とを含み、
前記単量体(a)に基づく構成単位の割合が、全ての単量体に基づく構成単位(100質量%)のうち、50~90質量%である、撥水剤組成物。
単量体(a):下式(1)で表される化合物。
(Z-Y)nX ・・・(1)。
ただし、Zは、炭素数が1~6のポリフルオロアルキル基、または下式(2)で表される基であり、Yは、2価有機基または単結合であり、nは、1または2である。Xは、nが1の場合は、下式(3-1)~(3-5)で表される基のいずれかであり、nが2の場合は、下式(4-1)~(4-4)で表される基のいずれかである。
CiF2i+1O(CFX1CF2O)jCFX2- ・・・(2)。
ただし、iは、1~6の整数であり、jは、0~10の整数であり、X1およびX2は、それぞれフッ素原子またはトリフルオロメチル基である。
-CR=CH2 ・・・(3-1)、
-C(O)OCR=CH2 ・・・(3-2)、
-OC(O)CR=CH2 ・・・(3-3)、
-OCH2-φ-CR=CH2 ・・・(3-4)、
-OCH=CH2 ・・・(3-5)。
ただし、Rは、水素原子、メチル基またはハロゲン原子であり、φはフェニレン基である。
-CH[-(CH2)mCR=CH2]- ・・・(4-1)、
-CH[-(CH2)mC(O)OCR=CH2]- ・・・(4-2)、
-CH[-(CH2)mOC(O)CR=CH2]- ・・・(4-3)、
-OC(O)CH=CHC(O)O- ・・・(4-4)。
ただし、Rは、水素原子、メチル基またはハロゲン原子であり、mは0~4の整数である。
単量体(b):ポリフルオロアルキル基を有さず、炭素数が1~6のアルキル基を有する(メタ)アクリレート。
単量体(c):ハロゲン化オレフィン。 - 前記含フッ素共重合体が、下記単量体(d)に基づく構成単位をさらに有する、請求項1に記載の撥水剤組成物。
単量体(d):ポリフルオロアルキル基を有さず、架橋しうる官能基を有する単量体。 - 前記含フッ素共重合体の質量平均分子量(Mw)が、5,000~100,000である請求項2に記載の撥水剤組成物。
- 疎水性基材の処理に用いられる撥水剤組成物の製造方法であって、
界面活性剤および重合開始剤の存在下、媒体中にて、下記単量体混合物を重合する、撥水剤組成物の製造方法。
単量体混合物:下記単量体(a)、下記単量体(b)、および下記単量体(c)を含み、前記単量体(a)の割合が、単量体混合物(100質量%)のうち、50~90質量%
である混合物。
単量体(a):下式(1)で表される化合物。
(Z-Y)nX ・・・(1)。
ただし、Zは、炭素数が1~6のポリフルオロアルキル基、または下式(2)で表される基であり、Yは、2価有機基または単結合であり、nは、1または2である。Xは、nが1の場合は、下式(3-1)~(3-5)で表される基のいずれかであり、nが2の場合は、下式(4-1)~(4-4)で表される基のいずれかである。
CiF2i+1O(CFX1CF2O)jCFX2- ・・・(2)。
ただし、iは、1~6の整数であり、jは、0~10の整数であり、X1およびX2は、それぞれフッ素原子またはトリフルオロメチル基である。
-CR=CH2 ・・・(3-1)、
-C(O)OCR=CH2 ・・・(3-2)、
-OC(O)CR=CH2 ・・・(3-3)、
-OCH2-φ-CR=CH2 ・・・(3-4)、
-OCH=CH2 ・・・(3-5)。
ただし、Rは、水素原子、メチル基またはハロゲン原子であり、φはフェニレン基である。
-CH[-(CH2)mCR=CH2]- ・・・(4-1)、
-CH[-(CH2)mC(O)OCR=CH2]- ・・・(4-2)、
-CH[-(CH2)mOC(O)CR=CH2]- ・・・(4-3)、
-OC(O)CH=CHC(O)O- ・・・(4-4)。
ただし、Rは、水素原子、メチル基またはハロゲン原子であり、mは0~4の整数である。
単量体(b):ポリフルオロアルキル基を有さず、炭素数が1~6のアルキル基を有す
る(メタ)アクリレート。
単量体(c):ハロゲン化オレフィン。 - 前記単量体混合物が、下記単量体(d)をさらに含む、請求項4に記載の撥水剤組成物の製造方法。
単量体(d):ポリフルオロアルキル基を有さず、架橋しうる官能基を有する単量体。 - 請求項1または2または3に記載の撥水剤組成物と、浸透剤と、帯電防止剤とを含む、疎水性基材処理剤組成物。
- 疎水性基材を、請求項6に記載の疎水性基材処理剤組成物で処理してなる、物品。
- 前記疎水性基材が、ポリオレフィンからなる基材である、請求項7に記載の物品。
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| CN2011800382528A CN103052698A (zh) | 2010-08-11 | 2011-08-08 | 拒水剂组合物、其制造方法、疏水性基材处理剂组合物和物品 |
| JP2012528670A JP5962507B2 (ja) | 2010-08-11 | 2011-08-08 | 撥水剤組成物、その製造方法、疎水性基材処理剤組成物、物品およびその製造方法 |
| US13/764,163 US8921482B2 (en) | 2010-08-11 | 2013-02-11 | Water repellent composition, its production method, hydrophobic substrate treating agent composition and article |
| US14/537,996 US9803120B2 (en) | 2010-08-11 | 2014-11-11 | Water repellent composition, its production method, hydrophobic substrate treating agent composition and article |
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| US13/764,163 Continuation US8921482B2 (en) | 2010-08-11 | 2013-02-11 | Water repellent composition, its production method, hydrophobic substrate treating agent composition and article |
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| JP2019196463A (ja) * | 2018-05-11 | 2019-11-14 | ダイキン工業株式会社 | 撥水撥油剤および繊維製品 |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP6191737B2 (ja) | 2017-09-06 |
| CN103052698A (zh) | 2013-04-17 |
| JPWO2012020735A1 (ja) | 2013-10-28 |
| US20150064490A1 (en) | 2015-03-05 |
| US20130149543A1 (en) | 2013-06-13 |
| JP2016188380A (ja) | 2016-11-04 |
| US9803120B2 (en) | 2017-10-31 |
| JP5962507B2 (ja) | 2016-08-03 |
| US8921482B2 (en) | 2014-12-30 |
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