WO2015056483A1 - 紫外線硬化性オルガノポリシロキサン組成物及び版材の製造方法 - Google Patents
紫外線硬化性オルガノポリシロキサン組成物及び版材の製造方法 Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
- B29C59/002—Component parts, details or accessories; Auxiliary operations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
- B29C67/0011—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 for shaping plates or sheets
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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
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
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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
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/06—Preparatory processes
- C08G77/08—Preparatory processes characterised by the catalysts used
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/56—Organo-metallic compounds, i.e. organic compounds containing a metal-to-carbon bond
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/0002—Lithographic processes using patterning methods other than those involving the exposure to radiation, e.g. by stamping
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/075—Silicon-containing compounds
- G03F7/0757—Macromolecular compounds containing Si-O, Si-C or Si-N bonds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2083/00—Use of polymers having silicon, with or without sulfur, nitrogen, oxygen, or carbon only, in the main chain, as moulding material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2007/00—Flat articles, e.g. films or sheets
- B29L2007/001—Flat articles, e.g. films or sheets having irregular or rough surfaces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y10/00—Processes of additive manufacturing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y80/00—Products made by additive manufacturing
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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
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/12—Polysiloxanes containing silicon bound to hydrogen
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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
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/20—Polysiloxanes containing silicon bound to unsaturated aliphatic groups
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2312/00—Crosslinking
- C08L2312/06—Crosslinking by radiation
Definitions
- the present invention relates to an ultraviolet curable organopolysiloxane composition, and more specifically, a nanoimprint master member that is cured as a rubber and used as a master for pressing a photocurable resin or the like to reverse a fine pattern.
- Plate materials printing materials such as curved printing pad materials, offset printing blanket materials, 3D printer shape forming materials, etc., which form a fine pattern by transferring conductive ink or semiconductive ink, etc.
- the present invention relates to an ultraviolet curable organopolysiloxane composition that is suitably used for a material.
- the plate material means that the ultraviolet curable organopolysiloxane composition is flowed in an uncured state on a base material on which a fine pattern is formed, and is irradiated with ultraviolet rays by an optical modeling method, cured and demolded.
- a master member for nanoimprint having a fine pattern inverted, a pad material for curved surface printing, a blanket material for offset printing cured on a substrate with high flatness (such as a glass substrate), or a shape forming material for 3D printers Is used.
- silicone rubber has been widely used in various fields by taking advantage of its excellent heat resistance, cold resistance, electrical characteristics and the like.
- it since it has good fluidity and can be reversed with good reproducibility from a base material having a fine pattern, it can be used as a master member for nanoimprint, a pad material for curved surface printing, a blanket material for offset printing, or a shape for 3D printers. It has also attracted attention as a forming material.
- addition reaction curable liquid silicone rubber compositions have come to be used frequently.
- an unvulcanized silicone rubber composition is poured into a base material and heated.
- the conventional addition reaction curable liquid silicone rubber which is cured and reverses the fine pattern, it depends on the material of the base material and the dimensional accuracy.
- a method of forming a fine pattern on a Si wafer using a photolithography technique as a base material is common, but currently, a commercially available Si wafer has a maximum diameter of 300 mm.
- a large plate for microcontact printing such as a size (210 mm ⁇ 297 mm) could not be produced.
- the silicone rubber composition used as a nanoimprint printing material is generally supplied in the form of a composition containing an organopolysiloxane having a high polymerization degree and a reinforcing resin.
- This composition is prepared by mixing a reinforcing resin and various dispersants with a raw material polymer using a mixing device such as a universal mixer or a kneader.
- the addition reaction curable liquid silicone rubber composition is usually cured by heating.
- the ultraviolet curable silicone resin is radically crosslinked, there is a problem in that it is inhibited from curing by oxygen.
- the silicone composition has a high oxygen permeability unique to silicone to produce a curing-inhibiting effect, and ensures storage stability in the open atmosphere.
- crosslinking of the irradiated part becomes unstable, and the interface between the irradiated part and the non-irradiated part after curing becomes unstable. It becomes difficult to form with high dimensional accuracy.
- UV curable silicone resins obtain an addition curing reaction using a platinum catalyst activated by UV irradiation, but the catalyst used has a high reactivity at 200 to 400 nm, and the siloxane polymer as a base also has an absorbance from around 250 nm.
- the catalyst used has a high reactivity at 200 to 400 nm
- the siloxane polymer as a base also has an absorbance from around 250 nm.
- light leakage from a beam spot irradiation light region formed on the liquid surface
- g light (436 nm) or less is used as the light source.
- UV curable silicone resin such as acrylic-modified silicone resin
- the base resin remains transparent even at i-line (365 nm), so light leakage from the beam spot is avoided. It cannot be done, and the edge is not sharp.
- Patent Document 1 Japanese Patent Laid-Open No. 2012-74644 proposes a microcontact printing plate material in which the content of low-molecular-weight siloxane is reduced, but there is a problem that mercapto-modified UV curable silicone resin has poor heat resistance. is there.
- Patent Document 2 Japanese Patent No. 5168510 causes thermal expansion due to heating, resulting in dimensional accuracy. It becomes difficult to transfer a good pattern.
- Patent Document 3 Patent No.
- Patent Document 4 Patent No. 4788863 propose an example of using an acrylic-modified UV-curable silicone resin in stereolithography, but it is difficult to exclude oxygen. Therefore, after cross-linking of the irradiated part and curing of the irradiated part and the non-irradiated part, the interface becomes unstable, making it difficult to form with high dimensional accuracy.
- the present invention has been made in view of the above circumstances, and has sufficient strength as a printing material such as a master member for nanoimprint, a pad material for curved surface printing, a blanket material for offset printing, and a shape forming material for 3D printers,
- a printing material such as a master member for nanoimprint, a pad material for curved surface printing, a blanket material for offset printing, and a shape forming material for 3D printers
- thermal expansion due to heating can be suppressed, and pattern transfer with high dimensional accuracy
- nanoimprint master members capable of printing, curved surface printing pad materials, blanket materials for offset printing, or shape forming materials for 3D printers are effective.
- An object is to provide an ultraviolet curable organopolysiloxane composition.
- the inventors of the present invention have a polymer design advantage of high dimensional accuracy after curing in addition reaction curing, and photocuring that combines fast curing by ultraviolet irradiation.
- a functional addition reaction type organopolysiloxane composition and a cured product thereof By providing a functional addition reaction type organopolysiloxane composition and a cured product thereof, a nanoimprint master member capable of pattern transfer and printing having sufficient strength and high dimensional accuracy, and a curved surface printing pad It has been found that a material, a blanket material for offset printing, or a shape forming material for 3D printers can be obtained, and the present invention has been completed.
- the present invention provides the following ultraviolet curable organopolysiloxane composition, the following plate material and a method for producing the same.
- A (A) (A-1) Linear organopolysiloxane having two or more alkenyl groups bonded to silicon atoms in one molecule: 50 to 90% by mass of component (A) and (A-2) R 1 2 R 2 SiO 1/2 unit, R 1 3 SiO 1/2 unit, and SiO 2 unit (wherein R 1 is an unsubstituted or halogen-substituted monovalent hydrocarbon group excluding an alkenyl group, R 2 is an alkenyl group ) containing a molar ratio of the sum of R 1 2 R 2 SiO units and R 1 3 SiO 1/2 units to SiO 2 units; (R 1 2 R 2 SiO 1/2 + R 1 3 SiO 1/2) / Three-dimensional network organopolysiloxane resin having SiO 2 of 0.5 to 1.5 and containing alkenyl groups of 1 ⁇ 10 ⁇
- the photoactive platinum complex catalyst is trimethyl (acetylacetonato) platinum complex, trimethyl (2,4-pentandionate) platinum complex, trimethyl (3,5-heptanedionate) platinum complex, trimethyl (methylacetoacetate) platinum Complex, bis (2,4-pentanedionato) platinum complex, bis (2,4-hexandionato) platinum complex, bis (2,4-heptanedionato) platinum complex, bis (3,5-heptanedionato) platinum complex, Bis (1-phenyl-1,3-butanedionato) platinum complex, bis (1,3-diphenyl-1,3-propanedionato) platinum complex, (1,5-cyclooctadienyl) dimethylp
- the curable organopolysiloxane composition is applied to a base material on which a fine pattern to be reversed is formed, and the organopolysiloxane composition is cured by irradiating with ultraviolet rays by an optical modeling method, and demolded from the base material. Then, the plate material manufacturing method according to claim 1, wherein the fine pattern of the base material is reversely formed on the surface.
- the above-mentioned plate material comprising a cured product of siloxane, wherein the cured product has a linear shrinkage ratio of 0.5% or less.
- the UV curable organopolysiloxane composition used for printing materials such as nanoimprint master members, curved surface printing pad materials, offset printing blanket materials, and 3D printer shape forming materials of the present invention maintains high strength. In addition, since it is excellent in suppressing expansion or contraction due to heat, pattern transfer and printing with high dimensional accuracy are possible.
- the component (A) of the present invention is an alkenyl group-containing organopolysiloxane, comprising (A-1) an alkenyl group-containing linear diorganopolysiloxane and (A-2) an alkenyl group-containing organopolysiloxane resin. Become.
- the organopolysiloxane of the component (A-1) is a main component (base polymer) of this composition, and 2 or more (usually 2 to 50) alkenyl groups bonded to silicon atoms in one molecule, particularly Is a linear organopolysiloxane having about 2 to 20, typically a straight chain in which the main chain is composed of repeating diorganopolysiloxane units and both ends of the molecular chain are blocked with triorganosiloxy groups. Diorganopolysiloxane.
- the organopolysiloxane resin as component (A-2) is composed of R 1 2 R 2 SiO 1/2 units, R 1 3 SiO 1/2 units and SiO 2 units (wherein R 1 is unsubstituted or alkenyl group is excluded) halogen-substituted monovalent hydrocarbon group, R 2 contains an alkenyl group), the molar ratio of the sum of R 1 2 R 2 SiO units and R 1 3 SiO 1/2 units to SiO 2 units; (R 1 2 R 2 SiO 1/2 + R 1 3 SiO 1/2 ) / SiO 2 is 0.5 to 1.5, preferably 0.7 to 1.0, and 1 ⁇ 10 ⁇ 4 to 50 ⁇ 10 ⁇ 4 mol.
- the organopolysiloxane resin having a three-dimensional network structure as the component (A-2) is usually preferably one containing no trifunctional siloxane unit in the molecule, but the SiO 2 unit in the molecule. Is essentially differentiated from the branched organopolysiloxane oligomer of component (D) described later.
- the organopolysiloxane resin of component (A-2) further includes R 1 2 SiO units, R 1 R 2 SiO units, R 2 2 SiO units, R 1 SiO 3/2 , R 2 SiO 3/2 units may be contained, but the content thereof is 30% by mass or less (0 to 30% by mass), particularly 20% by mass or less in the (A-2) component organopolysiloxane resin ( 0 to 20% by mass) is preferable.
- the polystyrene-reduced weight average molecular weight by gel permeation chromatography is preferably 400 to 100,000, particularly 500 to 30,000, from the viewpoint that the cured product can be reinforced stably. If the weight average molecular weight is too small, the effect of reinforcing the cured product may be lost, and if it is too large, stable production may not be possible.
- alkenyl group bonded to the silicon atom contained in the component (A) examples include, for example, vinyl group, allyl group, butenyl group, pentenyl group, hexenyl. Group, heptenyl group and the like, usually those having 2 to 8 carbon atoms, preferably about 2 to 6 carbon atoms, and vinyl group is particularly preferred.
- the bonding position of the alkenyl group of component (A-1) (that is, the position of the alkenyl group bonded to the silicon atom in the molecule) is, for example, a silicon atom at the molecular chain terminal and / or a non-terminal molecular chain (in the middle of the molecular chain).
- the alkenyl group bonded to the silicon atom in (1) is preferable, and at least the alkenyl groups bonded to the silicon atoms at both ends of the molecular chain are preferable.
- An unsubstituted or halogen-substituted monovalent hydrocarbon group usually having 1 to 10 carbon atoms, preferably about 1 to 8 carbon atoms, such as a halogenated alkyl group such as 1,3-trifluoropropyl group.
- the viscosity at 25 ° C. of the component (A-1) is excellent in handling workability (for example, sufficient flowability) of the composition, and physical properties (for example, hardness (softness) of the obtained cured product. ), Strength, and elongation) are favorable, it is preferably in the range of 10 to 500,000 mPa ⁇ s, and more preferably in the range of 100 to 100,000 mPa ⁇ s.
- the viscosity can usually be measured at 25 ° C. with a rotational viscometer (for example, BL type, BH type, BS type, cone plate type, etc.).
- organopolysiloxane of the component (A-1) examples include, for example, a trimethylsiloxy group-capped dimethylsiloxane / methylvinylsiloxane copolymer at both molecular chain terminals, a trimethylsiloxy group-capped methylvinylpolysiloxane with both molecular chain terminals, and both molecular chains.
- organopolysiloxane resin of the component (A-2) examples include a siloxane unit represented by the formula: R 1 3 SiO 1/2 and a siloxane unit represented by the formula: R 1 2 R 2 SiO 1/2 :
- R 1 in the above formula represents an unsubstituted or halogen-substituted monovalent hydrocarbon group other than the alkenyl group as described above.
- methyl group, ethyl group, propyl group, butyl group, pentyl group, hexyl Group alkyl group such as heptyl group; aryl group such as phenyl group, tolyl group, xylyl group and naphthyl group; aralkyl group such as benzyl group and phenethyl group; chloromethyl group, 3-chloropropyl group, 3, 3, 3
- a halogenated alkyl group such as a trifluoropropyl group
- R 2 in the above formula represents an alkenyl group, and examples thereof include a vinyl group, an allyl group, a butenyl group, a pentenyl group, a hexenyl group, and a heptenyl group.
- Component (B) is an organohydrogenpolysiloxane containing at least two hydrogen atoms bonded to a silicon atom in one molecule and not containing an alkoxy group in the molecule, and acts as a crosslinking agent in this composition. Is.
- the organohydrogenpolysiloxane of component (B) reacts with the component (A) (that is, component (A-1) and component (A-2)) and acts as a crosslinking agent, and its molecular structure
- component (A) that is, component (A-1) and component (A-2)
- component (A-1) and component (A-2) acts as a crosslinking agent, and its molecular structure
- component (A-1) and component (A-2) acts as a crosslinking agent, and its molecular structure
- various types of conventionally manufactured products such as linear, partially branched linear, cyclic, and three-dimensional network structures (resinous) can be used. It is necessary to have at least 2, preferably 3 or more hydrogen atoms bonded to silicon atoms (hydrosilyl group represented by SiH), usually 2 to 300, preferably 3 to 200, more preferably 4 to It is desirable to have about 100 SiH groups.
- the organohydrogenpolysiloxane those represented by the following
- R 4 except the aliphatic unsaturated bonds, preferably substituted or unsubstituted monovalent hydrocarbon group bonded 1 to 10 carbon atoms, a silicon atom, in the R 4
- the unsubstituted or substituted monovalent hydrocarbon group include a methyl group, an ethyl group, a propyl group, an isopropyl group, a butyl group, an isobutyl group, a tert-butyl group, a pentyl group, a neopentyl group, a hexyl group, a cyclohexyl group, Alkyl groups such as octyl group, nonyl group, decyl group, aryl groups such as phenyl group, tolyl group, xylyl group, naphthyl group, aralkyl groups such as benzyl group, phenylethyl group, phenylpropyl group,
- the unsubstituted or substituted monovalent hydrocarbon group for R 4 is preferably an alkyl group or an aryl group, and more preferably a methyl group or a phenyl group.
- B is 0.7 to 2.1, c is 0.001 to 1.0, and b + c is a positive number satisfying 0.8 to 3.0, preferably b is 1.0 to 2 0.0 and c are 0.01 to 1.0, and b + c is 1.5 to 2.5.
- the SiH group contained in at least 2, preferably 3 or more in one molecule may be located either at the end of the molecular chain or in the middle of the molecular chain, or may be located at both of them.
- the molecular structure of the organohydrogenpolysiloxane may be any of linear, partially branched, cyclic, branched, and three-dimensional network structures.
- the number (or degree of polymerization) is usually 2 to 300, preferably 3 to 200, more preferably about 4 to 100, and the composition has good handling workability (for example, sufficient flowability).
- the viscosity at 25 ° C. is usually 1 to 1,000 mPa ⁇ s, particularly 5 to A liquid material is preferably used at room temperature (25 ° C.) of about 500 mPa ⁇ s.
- the degree of polymerization can be determined, for example, as the weight average degree of polymerization (or weight average molecular weight) in gel permeation chromatography (GPC) analysis using toluene or the like as a developing solvent.
- the viscosity can be measured with a rotational viscometer (for example, BL type, BH type, BS type, cone plate type, etc.) at 25 ° C.
- organohydrogenpolysiloxane of the component (B) represented by the formula (1) examples include 1,1,3,3-tetramethyldisiloxane, 1,3,5,7-tetramethylcyclotetra Siloxane, tris (hydrogendimethylsiloxy) methylsilane, tris (hydrogendimethylsiloxy) phenylsilane, methylhydrogencyclopolysiloxane, methylhydrogensiloxane / dimethylsiloxane cyclic copolymer, both ends trimethylsiloxy group-capped methylhydrogenpoly Siloxane, trimethylsiloxy group-blocked dimethylsiloxane / methylhydrogensiloxane copolymer, dimethylhydrogensiloxy group-blocked dimethylpolysiloxane, both ends dimethylhydrogensiloxy-blocked Methylsiloxane / methylhydrogensiloxane copolymer, both ends trimethyl
- R is a hydrogen atom or methyl group
- m is an integer of 0 ⁇ m
- n is an integer of 1 ⁇ n
- m + n is an integer of 1 to 299.
- the component (B) can be obtained by a known production method.
- General production methods include, for example, octamethylcyclotetrasiloxane and / or tetramethylcyclodisiloxane and hexamethyldisiloxane which can be a terminal group or 1,1′-dihydro-2,2 ′, 3,3 ′.
- a compound containing a tetramethyldisiloxane unit can be easily obtained by equilibrating at a temperature of about ⁇ 10 to + 40 ° C. in the presence of a catalyst such as sulfuric acid, trifluoromethanesulfonic acid or methanesulfonic acid.
- the blending amount of component (B) is such that the molar ratio of hydrogen atoms bonded to silicon atoms in component (B) is 0.5 to 6 with respect to the total of alkenyl groups in the organopolysiloxanes in component (A) and component (D). 0.0, preferably 1.0 to 5.0. When the molar ratio is less than 0.5 or exceeds 6.0, the composition does not sufficiently cure.
- the component (C) used in the present invention is a photoactive platinum complex catalyst. When activated by irradiation with light, the addition reaction with the components (A), (B), and (D) is promoted. It has a catalytic action.
- the compound that is the photoactive platinum complex catalyst as the component (C) preferably means a ⁇ -diketone platinum complex or a platinum complex having a cyclic diene compound as a ligand.
- ⁇ -diketone platinum complex for example, trimethyl (acetylacetonato) platinum complex, trimethyl (2,4-pentanedionate) platinum complex, trimethyl (3,5-heptanedionate) platinum complex, trimethyl ( Methyl acetoacetate) platinum complex, bis (2,4-pentanedionato) platinum complex, bis (2,4-hexandionato) platinum complex, bis (2,4-heptandionato) platinum complex, bis (3,5- Examples include heptane dionato) platinum complex, bis (1-phenyl-1,3-butane diato) platinum complex, bis (1,3-diphenyl-1,3-propane dionato) platinum complex, and the like.
- platinum complexes having a cyclic diene compound as a ligand include, for example, (1,5-cyclooctadienyl) dimethylplatinum complex, (1,5-cyclooctadienyl) diphenylplatinum complex, (1,5 -Cyclooctadienyl) dipropylplatinum complex, (2,5-norboradiene) dimethylplatinum complex, (2,5-norboradiene) diphenylplatinum complex, (cyclopentadienyl) dimethylplatinum complex, (methylcyclopentadienyl) diethyl Platinum complex, (trimethylsilylcyclopentadienyl) diphenylplatinum complex, (methylcycloocta-1,5-dienyl) diethylplatinum complex, (cyclopentadienyl) trimethylplatinum complex, (cyclopentadienyl) ethyld
- the content of the component (C) may be any effective amount as a catalyst.
- the amount of the platinum metal is 1 to 5,000 ppm, preferably 10 to 500 ppm based on the weight of the component (A). It is used in the range.
- the blending amount is less than 1 ppm, the addition reaction is remarkably slow or is not cured.
- the branched organopolysiloxane oligomer of component (D) used in the present invention is used as a reinforcing agent in this composition, and includes R 1 SiO 3/2 units, R 1 2 R 2 SiO 1/2 A unit or R 1 2 R 2 SiO 1/2 unit and R 1 3 SiO 1/2 unit (wherein R 1 is an unsubstituted or halogen-substituted monovalent hydrocarbon group excluding an alkenyl group, and R 2 is an alkenyl group) ), Preferably an alkenyl group-containing branched organopolysiloxane oligomer containing 2 or more alkenyl groups in one molecule.
- the component (D) is clearly different from the above-described three-dimensional network organopolysiloxane resin (A-2) in that the component does not contain SiO 2 units.
- the ratio of R 1 2 R 2 SiO 1/2 units or R 1 2 R 2 SiO 1/2 units and R 1 3 SiO 1/2 units to R 1 SiO 3/2 units 0.1 to 10, particularly preferably 0.5 to 5.
- the amount of the alkenyl group contained in the component (D) is preferably 0.0001 to 0.05 (mol / g), particularly preferably 0.0002 to 0.02 (mol / g). If the amount of alkenyl group is too small, the cured product is weakly reinforced and hardened, and if it is too large, the composition may not be cured sufficiently.
- the viscosity by a rotational viscometer at 25 ° C. is preferably in the range of 1 to 1,000 mPa ⁇ s, particularly preferably in the range of 10 to 100 mPa ⁇ s.
- the component (D) can be obtained by a known production method.
- General production methods include, for example, a hydrolyzate of methyltrichlorosilane with water and methanol, a compound containing hexamethyldisiloxane and / or tetramethyldivinyldisiloxane, sulfuric acid, trifluoromethanesulfonic acid, methanesulfonic acid. It can be easily obtained by stirring at a temperature of + 50 ° C. or lower in the presence of a catalyst such as the above, and dropping water at a temperature of + 65 ° C. or lower to cause cohydrolysis.
- the blending amount of component (D) is such that the molar ratio of alkenyl groups in component (D) to the total of alkenyl groups in components (A) and (D) is 0.01 to 0.6. . If the molar ratio is less than 0.01, the effect of reinforcing the cured product may be lost. If the molar ratio exceeds 0.6, the composition may not be cured sufficiently.
- the composition of the present invention can contain a compound (hydrosilylation reaction control agent) having an effect of suppressing and controlling the addition curing reaction as an optional component other than the components (A) to (D).
- a compound hydrosilylation reaction control agent
- examples of such compounds include phosphorus-containing compounds such as triphenylphosphine; nitrogen-containing compounds such as tributylamine, tetramethylethylenediamine, and benzotriazole: sulfur-containing compounds, acetylenic compounds, compounds having two or more alkenyl groups, hydroper Examples thereof include oxy compounds and maleic acid derivatives.
- the degree of cure retarding effect of the compound varies greatly depending on its chemical structure. Therefore, the amount of addition should be adjusted to an optimum amount for each compound to be used. However, generally, if the amount added is too small, long-term storage stability at room temperature cannot be obtained. If too much, curing is inhibited.
- inorganic fillers such as fumed silica and polyorganosilsesquioxane, and these fillers are used as organoalkoxysilane compounds and organochlorosilane compounds.
- a filler surface-treated with an organosilicon compound such as an organosilazane compound or a low molecular weight siloxane compound may be used.
- composition of the present invention may optionally contain, for example, a heat resistance imparting agent, a flame retardancy imparting agent and the like.
- UV curing In the curing method of the present invention, it is desirable to irradiate the organopolysiloxane composition of the present invention with light of 200 to 500 nm.
- the lamp that irradiates ultraviolet rays is not particularly limited as long as it can supply ultraviolet rays having a wavelength of 200 to 500 nm, and examples thereof include a low-pressure mercury lamp, a medium-pressure mercury lamp, a high-pressure mercury lamp, a xenon lamp, a metal halide lamp, and an ultraviolet LED lamp.
- the amount of UV irradiation varies depending on the type and amount of the photoactive platinum complex used, but it may be sufficient to activate the photoactive platinum complex, 10 to 1,000 mW / cm 2 , especially 20 It is preferable to irradiate with an ultraviolet intensity of ⁇ 400 mW / cm 2 for 0.1 seconds to 5 minutes, particularly 0.5 seconds to 1 minute.
- the silicone cured material used for the obtained nanoimprint master member, curved surface printing pad material, offset printing blanket material, 3D printer shape forming material, etc. has a hardness of usually 40 or more according to the durometer A hardness meter,
- the tear strength [crescent type] is 1 kN / m or more, particularly 2 kN / m or more.
- the upper limit of hardness is usually 80 or less, particularly about 75 or less, and the upper limit of tear strength is usually about 10 kN / m or less, particularly about 8 kN / m or less.
- the hardness and tear strength can be measured by the method described in JIS-K6249.
- the change in shrinkage is measured and this change is preferably smaller.
- the linear shrinkage based on JIS-K6294 is usually 0.5% or less (0 to 0.5%), particularly 0. .3% or less (0 to 0.3%).
- the viscosity is a measured value at 25 ° C. by a rotational viscometer
- the weight average molecular weight is a measured value in terms of polystyrene by gel permeation chromatography analysis using toluene as a developing solvent.
- a part is a mass part.
- Vi represents a vinyl group
- Me represents a methyl group.
- (B) component Methyl hydrogen polysiloxane having SiH groups at both ends and side chains (polymerization degree 64, SiH group content 0.0112 mol / g)
- component (A) As component (A), (a-1) component 14 parts, (a-2) component 60 parts, (a-3) component 26 parts, (B) component 7.9 parts, (C) component 0 .48 parts, 0.61 part of component (D) were mixed uniformly, and an ultraviolet curable organopolysiloxane composition [in component (B) relative to the total of alkenyl groups in component (A) and component (D) SiH group molar ratio [H / Vi]; about 2.7, molar ratio of alkenyl group in component (D) to the sum of alkenyl groups in component (A) and component (D); about 0.10, 25 BL type viscometer at 0 ° C., rotor No.
- the composition was poured into a mold and cured at 150 ° C. for 30 minutes.
- the mold was left standing at room temperature (25 ° C.) for 1 hour and then demolded, and the linear shrinkage rate was determined based on JIS-K6249.
- the composition was poured into a frame and cured under heating conditions at 150 ° C. for 30 minutes to prepare a cured sheet having a thickness of 2 mm, and the hardness and tear strength (crescent) were measured based on JIS-K6249.
- the results are shown in Table 1.
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Abstract
Description
しかし、短時間で局所的にシリコーン樹脂中に拡散した酸素を排除することは困難であるため、照射部分の架橋も不安定になり、照射部と非照射部分の硬化後の界面が不安定となり、高い寸法精度での造形が困難となる。
更に、積層式光造形の場合は、紫外線照射部位からの光漏れ出しを紫外線光吸収剤や遮光顔料等で遮蔽しないとエッジが不鮮明になるが、シリコーン樹脂本来の透明性を損なうため、用途が限定される。
特許文献3(特許第3417230号公報)、特許文献4(特許第4788863号公報)には光造形でアクリル変性紫外線硬化シリコーン樹脂を使用する事例が提案されているが、酸素を排除することが困難であるため、照射部分の架橋や照射部と非照射部分の硬化後、界面が不安定となり高い寸法精度での造形が困難となる。
〔1〕
(A)(A-1)1分子中に、ケイ素原子に結合したアルケニル基を2個以上有する直鎖のオルガノポリシロキサン:(A)成分の50~90質量%及び(A-2)R1 2R2SiO1/2単位、R1 3SiO1/2単位、及びSiO2単位(式中、R1はアルケニル基を除く非置換又はハロゲン置換の一価炭化水素基、R2はアルケニル基)を含有し、SiO2単位に対するR1 2R2SiO単位及びR1 3SiO1/2単位の合計のモル比;(R1 2R2SiO1/2+R1 3SiO1/2)/SiO2が0.5~1.5であり、かつ1×10-4~50×10-4mol/gのアルケニル基を含有する三次元網状オルガノポリシロキサンレジン:(A)成分の10~50質量%((A-1)成分と(A-2)成分の合計で100質量%):100質量部、
(B)1分子中にケイ素原子に結合した水素原子を少なくとも2個含有し、分子中にアルコキシ基を含有しないオルガノハイドロジェンポリシロキサン:(A)成分と(D)成分が有するアルケニル基の合計に対する(B)成分中のケイ素原子に結合した水素原子の合計のモル比が0.5~7.0となる量、
(C)光活性型白金錯体硬化触媒:有効量、
(D)R1 2R2SiO1/2単位又はR1 2R2SiO1/2単位及びR1 3SiO1/2単位と、R1SiO3/2単位と(式中、R1はアルケニル基を除く非置換又はハロゲン置換の一価炭化水素基、R2はアルケニル基)を含有し、SiO2単位を含まない、アルケニル基含有オルガノポリシロキサンオリゴマー:(A)成分と(D)成分中のアルケニル基の合計に対する(D)成分中のアルケニル基のモル比が0.01~0.6となる量
を含有してなる紫外線硬化性オルガノポリシロキサン組成物。
〔2〕
光活性型白金錯体触媒がβ-ジケトン白金錯体又は環状ジエン化合物を配位子に持つ白金錯体である〔1〕記載の紫外線硬化性オルガノポリシロキサン組成物。
〔3〕
光活性型白金錯体触媒が、トリメチル(アセチルアセトナト)白金錯体、トリメチル(2,4-ペンタンジオネ-ト)白金錯体、トリメチル(3,5-ヘプタンジオネート)白金錯体、トリメチル(メチルアセトアセテート)白金錯体、ビス(2,4-ペンタンジオナト)白金錯体、ビス(2,4-へキサンジオナト)白金錯体、ビス(2,4-へプタンジオナト)白金錯体、ビス(3,5-ヘプタンジオナト)白金錯体、ビス(1-フェニル-1,3-ブタンジオナト)白金錯体、ビス(1,3-ジフェニル-1,3-プロパンジオナト)白金錯体、(1,5-シクロオクタジエニル)ジメチル白金錯体、(1,5-シクロオクタジエニル)ジフェニル白金錯体、(1,5-シクロオクタジエニル)ジプロピル白金錯体、(2,5-ノルボラジエン)ジメチル白金錯体、(2,5-ノルボラジエン)ジフェニル白金錯体、(シクロペンタジエニル)ジメチル白金錯体、(メチルシクロペンタジエニル)ジエチル白金錯体、(トリメチルシリルシクロペンタジエニル)ジフェニル白金錯体、(メチルシクロオクタ-1,5-ジエニル)ジエチル白金錯体、(シクロペンタジエニル)トリメチル白金錯体、(シクロペンタジエニル)エチルジメチル白金錯体、(シクロペンタジエニル)アセチルジメチル白金錯体、(メチルシクロペンタジエニル)トリメチル白金錯体、(メチルシクロペンタジエニル)トリヘキシル白金錯体、(トリメチルシリルシクロペンタジエニル)トリメチル白金錯体、(ジメチルフェニルシリルシクロペンタジエニル)トリフェニル白金錯体、(シクロペンタジエニル)ジメチルトリメチルシリルメチル白金錯体から選ばれる1種又は2種以上である〔2〕記載の紫外線硬化性オルガノポリシロキサン組成物。
〔4〕
ナノインプリント用マスター部材、曲面印刷用パッド材、オフセット印刷用ブランケット材又は3Dプリンタ用形状形成材用である〔1〕、〔2〕又は〔3〕記載の紫外線硬化性オルガノポリシロキサン組成物。
〔5〕
ナノインプリント用マスター部材、曲面印刷用パッド材、オフセット印刷用ブランケット材及び3Dプリンタ用形状形成材から選ばれる版材を製造する方法であって、〔1〕、〔2〕又は〔3〕記載の紫外線硬化性オルガノポリシロキサン組成物を反転すべき微細パターンが形成されている母材に適用し、光造形法により紫外線を照射して上記オルガノポリシロキサン組成物を硬化させ、上記母材から脱型して、表面に上記母材の微細パターンを反転形成することを特徴とする上記版材の製造方法。
〔6〕
ナノインプリント用マスター部材、曲面印刷用パッド材、オフセット印刷用ブランケット材及び3Dプリンタ用形状形成材から選ばれる版材であって、〔1〕、〔2〕又は〔3〕記載の紫外線硬化性オルガノポリシロキサンの硬化物からなり、該硬化物の線収縮率が0.5%以下であることを特徴とする上記版材。
[(A)成分]
本発明の(A)成分は、アルケニル基を含有するオルガノポリシロキサンであり、(A-1)アルケニル基含有直鎖状ジオルガノポリシロキサンと(A-2)アルケニル基含有オルガノポリシロキサンレジンとからなる。
(A-1)成分のオルガノポリシロキサンは、この組成物の主剤(ベースポリマー)であり、1分子中に、ケイ素原子に結合したアルケニル基を2個以上(通常、2~50個)、特には2~20個程度有する直鎖状のオルガノポリシロキサンであり、代表的には、主鎖がジオルガノポリシロキサン単位の繰返しからなり、分子鎖両末端がトリオルガノシロキシ基で封鎖された直鎖状のジオルガノポリシロキサンである。
(B)成分は、1分子中にケイ素原子に結合した水素原子を少なくとも2個含有し、分子中にアルコキシ基を含有しないオルガノハイドロジェンポリシロキサンであって、この組成物において架橋剤として作用するものである。
R4 bHcSiO(4-b-c)/2 (1)
本発明に使用される(C)成分は、光活性型白金錯体触媒であり、光を照射して活性化すると、(A)成分、(B)成分、(D)成分との付加反応を促進する触媒作用を有する。本発明において、該(C)成分である光活性型白金錯体触媒となる化合物は、好適にはβ-ジケトン白金錯体又は環状ジエン化合物を配位子に持つ白金錯体を意味する。
本発明に使用される(D)成分の分岐状オルガノポリシロキサンオリゴマーは、この組成物において補強剤として用いられるものであり、R1SiO3/2単位と、R1 2R2SiO1/2単位又はR1 2R2SiO1/2単位及びR1 3SiO1/2単位と(式中、R1はアルケニル基を除く非置換又はハロゲン置換の一価炭化水素基、R2はアルケニル基)を含有し、好ましくは1分子中にアルケニル基を2個以上含有する、アルケニル基含有の分岐状オルガノポリシロキサンオリゴマーである。(D)成分は、分子中にSiO2単位を含有しないものである点において、前述の(A-2)成分の三次元網状オルガノポリシロキサンレジンとは明確に差別化されるものである。
本発明の組成物は、上記(A)成分~(D)成分以外の任意の成分として、付加硬化反応を抑制・制御する効果を有する化合物(ヒドロシリル化反応制御剤)を含有することができる。このような化合物としては、トリフェニルホスフィンなどのリン含有化合物;トリブチルアミン、テトラメチルエチレンジアミン、ベンゾトリアゾールなどの窒素含有化合物:硫黄含有化合物、アセチレン系化合物、アルケニル基を2個以上有する化合物、ハイドロパーオキシ化合物、マレイン酸誘導体などが挙げられる。当該化合物による硬化遅延効果の度合いは、その化学構造によって大きく異なる。従って、その添加量は、使用する化合物の個々について最適な量に調整すべきであるが、一般的には、その添加量が少な過ぎると室温での長期貯蔵安定性が得られず、逆に多過ぎると硬化が阻害される。
本発明の硬化方法は、本発明のオルガノポリシロキサン組成物に、200~500nmの光を照射することが望ましい。紫外線照射するランプは波長が200~500nmの紫外線を供給できるものなら特に制限されず、例えば、低圧水銀灯、中圧水銀灯、高圧水銀灯、キセノンランプ、メタルハライドランプ、紫外線LEDランプ等が挙げられる。紫外線照射量は、使用する光活性型白金錯体の種類や量により異なるが、光活性型白金錯体が活性化するのに十分な量であればよく、10~1,000mW/cm2、特に20~400mW/cm2の紫外線強度を0.1秒~5分、特に0.5秒~1分程度照射することが好ましい。
(A-1)成分:
a-1:粘度1,000mPa・sの分子鎖両末端ジメチルビニルシロキシ基封鎖ジメチルポリシロキサン。ビニル基含有量0.000125mol/g
a-2:粘度5,000mPa・sの分子鎖両末端トリビニルシロキシ基封鎖ジメチルポリシロキサン。ビニル基含有量0.00006mol/g
(A-2)成分:
a-3:Me3SiO1/2単位、ViMe2SiO1/2及びSiO2単位からなる樹脂質共重合体(Me3SiO1/2単位+ViMe2SiO1/2単位)/SiO2単位=0.85(モル比)、ビニル基含有量0.0009mol/g、重量平均分子量3,800
(B)成分:
両末端及び側鎖にSiH基を有するメチルハイドロジェンポリシロキサン(重合度64、SiH基量0.0112mol/g)
(C)成分:
ビス(2,4-ペンタンジオナト)白金錯体の酢酸2-(2-ブトキシエトキシ)エチル溶液(濃度1質量%)
(D)成分:
MeSiO3/2単位、Me2ViSiO1/2単位からなり、ビニル基を0.0054mol/g含有する、重量平均分子量が2,000であり、1分子中にビニル基を平均で約12.5個含有する、粘度24mPa・sのオルガノポリシロキサンオリゴマー。Me2ViSiO1/2単位/MeSiO3/2単位=1/1(モル比)
(A)成分として、(a-1)成分14部と、(a-2)成分60部と、(a-3)成分26部と、(B)成分7.9部、(C)成分0.48部、(D)成分0.61部を均一に混合して、紫外線硬化性オルガノポリシロキサン組成物[(A)成分と(D)成分中のアルケニル基の合計に対する(B)成分中のSiH基のモル比[H/Vi];約2.7、(A)成分と(D)成分中のアルケニル基の合計に対する(D)成分中のアルケニル基のモル比;約0.10、25℃でのBL型粘度計、ローター4番、60rpmでの測定結果が2.6Pa・s]を調製した。
上記組成物を型に流し、室温(25℃)で120mW/cm2,1.7秒間(=200mW/cm2)の紫外線照射条件で硬化させた。紫外線照射後、室温(25℃)で1時間冷却後脱型し、JIS-K6249に基づき線収縮率を求めた。
また、上記組成物を枠に流し、120mW/cm2,1.7秒間の紫外線照射条件で硬化させ、厚さ2mmの硬化シートを作製し、JIS-K6249に基づき、硬さ、引裂き強度(クレセント)を測定した。それらの結果を表1に示した。
(A)成分として、(a-1)成分17.4部と、(a-2)成分62.3部と、(a-3)成分24.9部と、(B)成分として、HMe2SiO1/2及びSiO2単位からなる樹脂質共重合体[HiMe2SiO1/2単位/SiO2単位=1.6(モル比)、SiH基量0.00915mol/g、重量平均分子量1,230]5部、制御剤としてMeViSiO単位からなり、アルケニル基を0.0116mol/g含有する粘度3.45mPa・sの環状オルガノポリシロキサンオリゴマー0.3部、塩化白金酸の2-エチルヘキサノール溶液(Pt濃度2質量%)0.05部を均一に混合して、熱硬化性シリコーン組成物[(A)成分中のアルケニル基に対する(B)成分中のSiH基のモル比[H/Vi];約1.6、25℃でのBL型粘度計、ローター4番、60rpmでの測定結果が3.5Pa・s]を調製した。
上記組成物を型に流し、150℃で30分の加熱条件で硬化させた。室温(25℃)で1時間静置後脱型し、JIS-K6249に基づき線収縮率を求めた。
また、上記組成物を枠に流し、150℃で30分の加熱条件で硬化させ、厚さ2mmの硬化シートを作製し、JIS-K6249に基づき硬さ、引裂き強度(クレセント)を測定した。それらの結果を表1に示した。
Claims (6)
- (A)(A-1)1分子中に、ケイ素原子に結合したアルケニル基を2個以上有する直鎖のオルガノポリシロキサン:(A)成分の50~90質量%及び(A-2)R1 2R2SiO1/2単位、R1 3SiO1/2単位、及びSiO2単位(式中、R1はアルケニル基を除く非置換又はハロゲン置換の一価炭化水素基、R2はアルケニル基)を含有し、SiO2単位に対するR1 2R2SiO単位及びR1 3SiO1/2単位の合計のモル比;(R1 2R2SiO1/2+R1 3SiO1/2)/SiO2が0.5~1.5であり、かつ1×10-4~50×10-4mol/gのアルケニル基を含有する三次元網状オルガノポリシロキサンレジン:(A)成分の10~50質量%((A-1)成分と(A-2)成分の合計で100質量%):100質量部、
(B)1分子中にケイ素原子に結合した水素原子を少なくとも2個含有し、分子中にアルコキシ基を含有しないオルガノハイドロジェンポリシロキサン:(A)成分と(D)成分が有するアルケニル基の合計に対する(B)成分中のケイ素原子に結合した水素原子の合計のモル比が0.5~7.0となる量、
(C)光活性型白金錯体硬化触媒:有効量、
(D)R1 2R2SiO1/2単位又はR1 2R2SiO1/2単位及びR1 3SiO1/2単位と、R1SiO3/2単位と(式中、R1はアルケニル基を除く非置換又はハロゲン置換の一価炭化水素基、R2はアルケニル基)を含有し、SiO2単位を含まない、アルケニル基含有オルガノポリシロキサンオリゴマー:(A)成分と(D)成分中のアルケニル基の合計に対する(D)成分中のアルケニル基のモル比が0.01~0.6となる量
を含有してなる紫外線硬化性オルガノポリシロキサン組成物。 - 光活性型白金錯体触媒がβ-ジケトン白金錯体又は環状ジエン化合物を配位子に持つ白金錯体である請求項1記載の紫外線硬化性オルガノポリシロキサン組成物。
- 光活性型白金錯体触媒が、トリメチル(アセチルアセトナト)白金錯体、トリメチル(2,4-ペンタンジオネ-ト)白金錯体、トリメチル(3,5-ヘプタンジオネート)白金錯体、トリメチル(メチルアセトアセテート)白金錯体、ビス(2,4-ペンタンジオナト)白金錯体、ビス(2,4-へキサンジオナト)白金錯体、ビス(2,4-へプタンジオナト)白金錯体、ビス(3,5-ヘプタンジオナト)白金錯体、ビス(1-フェニル-1,3-ブタンジオナト)白金錯体、ビス(1,3-ジフェニル-1,3-プロパンジオナト)白金錯体、(1,5-シクロオクタジエニル)ジメチル白金錯体、(1,5-シクロオクタジエニル)ジフェニル白金錯体、(1,5-シクロオクタジエニル)ジプロピル白金錯体、(2,5-ノルボラジエン)ジメチル白金錯体、(2,5-ノルボラジエン)ジフェニル白金錯体、(シクロペンタジエニル)ジメチル白金錯体、(メチルシクロペンタジエニル)ジエチル白金錯体、(トリメチルシリルシクロペンタジエニル)ジフェニル白金錯体、(メチルシクロオクタ-1,5-ジエニル)ジエチル白金錯体、(シクロペンタジエニル)トリメチル白金錯体、(シクロペンタジエニル)エチルジメチル白金錯体、(シクロペンタジエニル)アセチルジメチル白金錯体、(メチルシクロペンタジエニル)トリメチル白金錯体、(メチルシクロペンタジエニル)トリヘキシル白金錯体、(トリメチルシリルシクロペンタジエニル)トリメチル白金錯体、(ジメチルフェニルシリルシクロペンタジエニル)トリフェニル白金錯体、(シクロペンタジエニル)ジメチルトリメチルシリルメチル白金錯体から選ばれる1種又は2種以上である請求項2記載の紫外線硬化性オルガノポリシロキサン組成物。
- ナノインプリント用マスター部材、曲面印刷用パッド材、オフセット印刷用ブランケット材又は3Dプリンタ用形状形成材用である請求項1、2又は3記載の紫外線硬化性オルガノポリシロキサン組成物。
- ナノインプリント用マスター部材、曲面印刷用パッド材、オフセット印刷用ブランケット材及び3Dプリンタ用形状形成材から選ばれる版材を製造する方法であって、請求項1、2又は3記載の紫外線硬化性オルガノポリシロキサン組成物を反転すべき微細パターンが形成されている母材に適用し、光造形法により紫外線を照射して上記オルガノポリシロキサン組成物を硬化させ、上記母材から脱型して、表面に上記母材の微細パターンを反転形成することを特徴とする上記版材の製造方法。
- ナノインプリント用マスター部材、曲面印刷用パッド材、オフセット印刷用ブランケット材及び3Dプリンタ用形状形成材から選ばれる版材であって、請求項1、2又は3記載の紫外線硬化性オルガノポリシロキサンの硬化物からなり、該硬化物の線収縮率が0.5%以下であることを特徴とする上記版材。
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Also Published As
| Publication number | Publication date |
|---|---|
| TWI633157B (zh) | 2018-08-21 |
| EP3059284A1 (en) | 2016-08-24 |
| CN105637035A (zh) | 2016-06-01 |
| SG11201603069RA (en) | 2016-05-30 |
| US20160230005A1 (en) | 2016-08-11 |
| JPWO2015056483A1 (ja) | 2017-03-09 |
| CN105637035B (zh) | 2019-03-29 |
| KR101833291B1 (ko) | 2018-03-02 |
| US9714344B2 (en) | 2017-07-25 |
| EP3059284A4 (en) | 2017-06-21 |
| JP6020740B2 (ja) | 2016-11-02 |
| KR20160073378A (ko) | 2016-06-24 |
| TW201516091A (zh) | 2015-05-01 |
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