WO2016139956A1 - Adhésif sensible à la pression à base de silicone, et stratifié possédant une couche adhésive sensible à la pression à base de silicone - Google Patents

Adhésif sensible à la pression à base de silicone, et stratifié possédant une couche adhésive sensible à la pression à base de silicone Download PDF

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Publication number
WO2016139956A1
WO2016139956A1 PCT/JP2016/001181 JP2016001181W WO2016139956A1 WO 2016139956 A1 WO2016139956 A1 WO 2016139956A1 JP 2016001181 W JP2016001181 W JP 2016001181W WO 2016139956 A1 WO2016139956 A1 WO 2016139956A1
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group
sensitive adhesive
mass
pressure
component
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PCT/JP2016/001181
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English (en)
Japanese (ja)
Inventor
日野　賢一
尚子 田中
昭宏 中村
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東レ・ダウコーニング株式会社
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Priority to JP2017503358A priority Critical patent/JP6663418B2/ja
Priority to KR1020177023418A priority patent/KR20170126874A/ko
Priority to CN201680012561.0A priority patent/CN107250313B/zh
Publication of WO2016139956A1 publication Critical patent/WO2016139956A1/fr

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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J183/00—Adhesives based on 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; Adhesives based on derivatives of such polymers
    • C09J183/04—Polysiloxanes
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C09J7/22—Plastics; Metallised plastics
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C09J7/22—Plastics; Metallised plastics
    • C09J7/25—Plastics; Metallised plastics based on macromolecular compounds obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds
    • C09J7/255—Polyesters
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
    • C09J7/38—Pressure-sensitive adhesives [PSA]
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
    • C09J2301/302—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier the adhesive being pressure-sensitive, i.e. tacky at temperatures inferior to 30°C

Definitions

  • the present invention relates to a silicone-based pressure-sensitive adhesive and a laminate having a pressure-sensitive adhesive layer formed using the pressure-sensitive adhesive.
  • Patent Literature In a manufacturing process of a cover glass or a touch panel for covering a display unit of a portable small computer such as a mobile phone, a portable music player, and a portable personal computer, a protective film for temporarily protecting them is used (Patent Literature). 1).
  • Such a protective film is sufficiently adhered to an adherend such as a cover glass or a touch panel during the movement of the manufacturing process, and is required to have an adhesive strength that can be easily peeled off during use. . Furthermore, it is also required that the pressure-sensitive adhesive layer does not migrate to the adherend during re-peeling.
  • An object of the present invention is to provide a silicone-based pressure-sensitive adhesive that forms a pressure-sensitive adhesive layer with little transfer to an adherend when re-peeled, and a laminate with less transfer of the pressure-sensitive adhesive layer. .
  • the silicone-based pressure-sensitive adhesive of the present invention is characterized in that it forms a pressure-sensitive adhesive layer with little transfer to an adherend when it is re-peeled. There is a feature that there are few.
  • component (A) is not limited, and examples thereof include straight-chain, partially-branched straight-chain, branched-chain, cyclic, and resin-like, and preferably straight-chain, partially-branched It is a chain.
  • molecular chain both ends dimethylvinylsiloxy group-capped dimethylpolysiloxane, molecular chain both ends diphenylvinylsiloxy group-capped dimethylpolysiloxane, molecular chain both ends dimethylvinylsiloxy group-capped dimethylsiloxane and methylphenylsiloxane
  • Polymer chain dimethylvinylsiloxy group-blocked dimethylsiloxane / diphenylsiloxane copolymer, both ends of the molecular chain diphenylvinylsiloxy group-blocked dimethylsiloxane / methylphenylsiloxane copolymer, dimethylvinylsiloxy-blocked dimethylsiloxane at both ends of the molecular chain ⁇ Methyl vinyl siloxane copolymer, dimethyl vinyl siloxy group-blocked dimethyl siloxane with molecular chain terminals ⁇ Methyl pheny
  • the component (A) has a viscosity at 25 ° C. of 100 mPa ⁇ s or more and 10,000 mPa ⁇ s or less, preferably 150 mPa ⁇ s or more and 5000 mPa ⁇ s or less, or 200 mPa ⁇ s or more and 3000 mPa ⁇ s. -S or less. This is because when the viscosity of the component (A) is equal to or higher than the lower limit of the above range, sufficient adhesive strength can be obtained. On the other hand, when the viscosity is equal to or lower than the upper limit of the above range, the pressure-sensitive adhesive layer hardly shifts. Because it becomes.
  • the viscosity at 25 ° C. of the component (A) can be measured with a rotational viscometer based on JIS K7117-1.
  • the component (B) may have a silicon atom-bonded hydroxyl group or a silicon atom-bonded hydrolyzable group.
  • the hydrolyzable group include an alkoxy group having 1 to 3 carbon atoms such as a methoxy group, an ethoxy group, and a propoxy group; an acetoxy group; and an isopropenoxy group.
  • the molecular structure of component (B) is not limited, and examples thereof include straight-chain, partially-branched straight-chain, branched-chain, cyclic, and resin-like, and preferably straight-chain, partially-branched It is a chain.
  • component (B) in addition to the same organopolysiloxane as the component (A), a dimethylhydroxysiloxy group-blocked dimethylsiloxane / methylvinylsiloxane copolymer having both ends of a molecular chain, a dimethylhydroxysiloxy group-blocked dimethylsiloxane having both ends of a molecular chain Examples thereof include diphenylsiloxane / methylvinylsiloxane copolymer, and a mixture of two or more of these organopolysiloxanes.
  • the content of the component (B) is 0.1 parts by mass or more and less than 100 parts by mass with respect to 100 parts by mass of the component (A), preferably 1 part by mass or more, 50 parts by mass or less, or 2 parts by mass. Part to 30 parts by weight. This is because the smoothness of the coating is improved when the content of the component (B) is equal to or higher than the lower limit of the above range, and on the other hand, when the content is equal to or lower than the upper limit of the above range, the pressure-sensitive adhesive layer moves. This is because the coating property is improved, and even if the organic solvent is not used or the amount used is small, the coating property is improved.
  • Component (C) is a cross-linking agent for the pressure-sensitive adhesive, and is an organopolysiloxane having at least three silicon-bonded hydrogen atoms in one molecule.
  • the bonding position of the silicon atom-bonded hydrogen atom is not limited, and may be bonded to the silicon atom at the end of the molecular chain and / or the silicon atom in the molecular chain.
  • the molecular structure of the component (C) is not limited, and examples thereof include straight-chain, partially-branched straight-chain, branched-chain, cyclic, net-like, and resin-like, preferably straight-chain and partially-branched It has a straight chain.
  • molecular chain both ends trimethylsiloxy group-capped methylhydrogenpolysiloxane, molecular chain both ends trimethylsiloxy group-capped dimethylsiloxane / methylhydrogensiloxane copolymer, molecular chain both ends trimethylsiloxy group-capped dimethylsiloxane ⁇ Methylhydrogensiloxane ⁇ Methylphenylsiloxane copolymer, dimethylhydrogensiloxy group-capped dimethylsiloxane with molecular chain terminals ⁇ Methylhydrogensiloxane copolymer, dimethylhydrogensiloxy group-capped dimethylsiloxane with molecular chain terminals ⁇ Methylphenylsiloxane ⁇ Methyl hydrogen siloxane copolymer, molecular chain both ends dimethyl hydrogen siloxy group blocked methyl phenyl siloxane ⁇ Methyl hydrogen siloxane copolymer,
  • the viscosity of the component (C) is not limited, but preferably the kinematic viscosity at 25 ° C. is in the range of 3 to 50,000 mm 2 / s. This is because if the viscosity of the component (C) is not less than the lower limit of the above range, the volatility of the component (C) becomes low and the composition of the resulting pressure-sensitive adhesive becomes stable, This is because the migration of the pressure-sensitive adhesive layer is suppressed when it is not more than the upper limit.
  • the kinematic viscosity at 25 ° C. of the component (C) can be measured with an Ubbelohde viscometer based on JIS Z8803.
  • the content of component (C) is 0.5 mol of silicon-bonded hydrogen atoms contained in this component with respect to a total of 1 mol of alkenyl groups contained in components (A) and (B).
  • the amount is 20 mol or less, preferably 0.7 mol or more and 10 mol or less, or 1 mol or more and 8 mol or less. This is because when the content of the component (C) is not less than the lower limit of the above range, a pressure-sensitive adhesive layer having sufficient mechanical properties can be formed. This is because the migration of the pressure bonding layer is suppressed.
  • Component (D) is a hydrosilylation reaction catalyst for accelerating the hydrosilylation reaction of the pressure-sensitive adhesive, and examples thereof include a platinum-based catalyst, a palladium-based catalyst, and a rhodium-based catalyst.
  • the platinum catalyst include chloroplatinic acid, alcohol solution of chloroplatinic acid, platinum carbonyl complex, platinum alkenylsiloxane complex, and platinum olefin complex.
  • the compatibility with the component (A) is good. Therefore, a platinum alkenylsiloxane complex is preferable.
  • examples of the alkenylsiloxane include 1,3-divinyltetramethyldisiloxane and 1,1,3,3-tetravinyldimethyldisiloxane.
  • the content of the component (D) is an amount that promotes the hydrosilylation reaction of the pressure-sensitive adhesive.
  • the catalyst metal in the component relative to the component (A) is 0.1 to 1 by mass unit.
  • the amount is preferably in the range of 1,000 ppm, or in the range of 1 to 500 ppm. This is because the hydrosilylation reaction of the pressure-sensitive adhesive is promoted when the content of the component (D) is not less than the lower limit of the above range, and on the other hand, it is not more than the upper limit of the above range. This is because problems such as coloring are unlikely to occur in the pressure-sensitive adhesive layer.
  • the pressure-sensitive adhesive may contain (E) a hydrosilylation reaction inhibitor in order to adjust the speed of the hydrosilylation reaction.
  • This component (E) includes 2-methyl-3-butyn-2-ol, 3,5-dimethyl-1-hexyn-3-ol, 3-methyl-1-penten-3-ol, 2-phenyl- Alkyne alcohols such as 3-butyn-2-ol and 1-ethynyl-1-cyclohexanol; 3-methyl-3-penten-1-yne, 3,5-dimethyl-3-hexen-1-yne and the like and enyne compounds 1,3,5,7-tetramethyl-1,3,5,7-tetravinylcyclotetrasiloxane, 1,3,5,7-tetramethyl-1,3,5,7-tetrahexenylcyclotetrasiloxane; And benzotriazole are exemplified.
  • the content of the component (E) is not particularly limited, but is preferably 5 parts by mass or less or 3 parts by mass or less with respect to 100 parts by mass of the component (A), while the lower limit is 0.01 mass. Part or more, or 0.1 part by weight or more. This is because when the content of the component (C) is not less than the lower limit of the above range, the usable time of the coating liquid can be ensured. This is because the pressure-sensitive adhesive can be cured at the curing temperature.
  • R 1 3 SiO 1/2 unit (wherein R 1 is a halogen-substituted or unsubstituted monovalent hydrocarbon group) and SiO. It may contain an organopolysiloxane resin consisting essentially of 4/2 units and having a molar ratio of R 1 3 SiO 1/2 units to SiO 4/2 units of 0.5 or more and 1.5 or less.
  • R 1 is a halogen-substituted or unsubstituted monovalent hydrocarbon group. 1 to C carbon atoms such as methyl, ethyl, propyl, isopropyl, butyl, isobutyl, pentyl, isopentyl, neopentyl, heptyl, octyl, nonyl, decyl, undecyl, dodecyl, etc.
  • alkyl groups vinyl group, allyl group, butenyl group, pentenyl group, hexenyl group, heptenyl group, octenyl group, pentenyl group, undecenyl group, dodecenyl group and the like alkenyl groups having 2 to 12 carbon atoms; phenyl group, tolyl group Aryl groups having 6 to 12 carbon atoms such as xylyl group; aralkyl groups having 7 to 12 carbon atoms such as benzyl group and phenethyl group; chloromethyl group, 3-chloropropyl group and 3,3,3-trifluoropropyl group And halogenated alkyl groups such as methyl group, vinyl group and phenyl group are preferable.
  • (F) component may have a silicon atom bond hydroxyl group or a silicon atom bond hydrolyzable group.
  • hydrolyzable group include an alkoxy group having 1 to 3 carbon atoms such as a methoxy group, an ethoxy group, and a propoxy group; an acetoxy group; and an isopropenoxy group.
  • Component (F) consists essentially of R 1 3 SiO 1/2 units and SiO 4/2 units, but also has R 1 2 SiO 2/2 units and R 1 SiO 3/2 units.
  • the total content of R 1 3 SiO 1/2 units and SiO 4/2 units in component (F) is preferably 50% by mass or more, more preferably 80% by mass or more. 100% by mass, that is, it is preferable to consist of only these two units.
  • Component (F) has a molar ratio of R 1 3 SiO 1/2 units to SiO 4/2 units, preferably in the range of 0.5 to 1.5, in the range of 0.5 to 1.0, Or, it is in the range of 0.6 to 0.9. This is because the adhesive force of the resulting pressure-sensitive adhesive layer is increased when the molar ratio is equal to or higher than the lower limit of the above range, while the pressure-sensitive adhesive layer is obtained when the molar ratio is equal to or lower than the upper limit of the above range. This is because tack is lowered.
  • the pressure-sensitive adhesive includes both dimethylhydrogensiloxy group-capped dimethylpolysiloxane with molecular chain at both ends and dimethylsiloxane / methylphenylsiloxane with dimethylhydrogensiloxy group-capped with molecular chain at both ends unless the object of the present invention is impaired.
  • diorganopolysiloxane having silicon-bonded hydrogen atoms only at both ends of the molecular chain such as dimethylhydrogensiloxy group-capped methylphenylpolysiloxane; toluene, xylene, hexane, heptane, acetone, methyl ethyl ketone, methyl Organic solvents such as isobutyl ketone; tetramethoxysilane, tetraethoxysilane, dimethyldimethoxysilane, methylphenyldimethoxysilane, methylphenyldiethoxysilane, phenyltrimethoxysilane, methyltrimeth Alkoxysilanes such as silane, methyltriethoxysilane, vinyltriethoxysilane, allyltrimethoxysilane, allyltriethoxysilane, 3-glycidoxypropyltrimethoxysilane, 3-me
  • the laminate of the present invention comprises at least a support 1 and a pressure-sensitive adhesive layer 2 formed thereon by hydrosilylation reaction of the aforementioned silicone-based pressure-sensitive adhesive.
  • a laminate of the present invention can be used as an adhesive film, for example.
  • the support 1 examples include an inorganic support such as a glass plate, a metal plate, and a metal foil, as well as polyester resin, polyethylene terephthalate resin, polycarbonate resin, polyethylene resin, polypropylene resin, ethylene-propylene copolymer resin, ethylene-
  • the plastic plate or film include vinyl acetate copolymer resin and ethylene-ethylene acrylate copolymer resin, and the thickness is not limited, but it is usually preferably 10 to 3,000 ⁇ m.
  • the surface of the support 1 may be subjected to primer treatment, corona treatment, etching treatment, or plasma treatment. It is preferable to use a primer composition.
  • a primer composition for a silicone pressure-sensitive adhesive it is possible to use a primer composition disclosed in JP-A-54-61242, JP-A-3-28283, or JP-A-2013-139509. it can.
  • Such a primer composition for a silicone pressure-sensitive adhesive can be prepared, for example, by blending a platinum catalyst with Dow Corning (R) 7499 PSA PRIMER and DOW CORNING (R) 7387 CROSLINKER manufactured by Dow Corning. it can.
  • the method for applying the silicone pressure sensitive adhesive to the support film 1 is not limited, and examples include gravure coating, offset coating, offset gravure, roll coating, reverse roll coating, air knife coating, curtain coating, and comma coating. .
  • the pressure sensitive adhesive layer can be formed on the support by hydrosilylation reaction of the silicone pressure sensitive adhesive at room temperature or by heating.
  • the heating conditions may be 60 to 160 ° C. and 15 seconds to 5 minutes.
  • the thickness of the pressure-sensitive adhesive layer 2 is not limited, but is generally in the range of 1 to 1000 ⁇ m, or in the range of 5 to 500 ⁇ m.
  • the laminate of the present invention may be one in which the present pressure-sensitive adhesive is directly coated on a support as described above to produce a laminate, and the present pressure-sensitive adhesive is applied to a release film or release paper. And a pressure-sensitive adhesive layer formed by a hydrosilylation reaction, and then prepared by a transfer method in which this is bonded to the support.
  • the silicone-based pressure-sensitive adhesive and laminate of the present invention will be described in detail with reference to examples and comparative examples.
  • the viscosity and plasticity in an Example are the values measured in 25 degreeC.
  • the adhesive force and the transition of the pressure-sensitive adhesive layer were measured as follows.
  • the viscosity (mPa ⁇ s) is a value measured using a rotational viscometer according to JIS K7117-1, and the kinematic viscosity (mm 2 / s) is measured with an Ubbelohde viscometer according to JIS Z8803. Value.
  • Plasticity The plasticity was indicated by a value measured according to the method defined in JIS K 6249 (value obtained when a 1 kgf load was applied to a 4.2 g spherical sample for 3 minutes at 25 ° C.).
  • the pressure-sensitive adhesive film was cut to a width of 25 mm to prepare a pressure-sensitive adhesive tape, and was pressure-bonded to a glass adherend using a 2 kgf rubber roller. Then, it left still at room temperature for 24 hours.
  • the adhesive strength (gf / 25 mm) was measured by a 180 ° peeling method using a low-speed (300 mm / min) tensile tester.
  • DOW CORNING (R) 7499 PSA PRIMER solid content 22.6% by mass 100 manufactured by Dow Corning Co., Ltd. on a 50 ⁇ m thick polyethylene terephthalate resin film ⁇ Lumirror (registered trademark) manufactured by Toray Industries, Inc. ⁇ (hereinafter referred to as PET film) parts by weight, manufactured by Dow Corning of DOW CORNING (R) 7387 CROSSLINKER 1.4 parts by weight 500 parts by weight of toluene, and a platinum 1,3-divinyl-1,1,3,3-tetramethyldisiloxane complex (this The amount of platinum metal in the complex is 100 ppm in mass unit with respect to the solid content of the above 7499), stirred, and then coated with a Myer bar (No. 3) in an oven at 120 ° C. in 30 seconds. Cured.
  • the amount of silicon atom-bonded hydrogen atoms in this component is 3.0 moles with respect to a total of 1 mole of vinyl groups in the dimethylsiloxane / methylvinylsiloxane copolymer raw rubber), 2-methyl-3-butyne- 2-ol 1.1 parts by mass was added and mixed.
  • a platinum 1,3-divinyl-1,1,3,3-tetramethyldisiloxane complex (the platinum metal in this complex was combined with the dimethylpolysiloxane).
  • a toluene solution of a silicone-based pressure-sensitive adhesive was prepared by mixing the dimethylsiloxane / methylvinylsiloxane copolymer raw rubber with a total amount of 50 ppm in terms of mass unit.
  • Hydrogen atom content 0.43 mass%) 15.5 parts by mass (the dimethylpolysiloxane and the dimethylsiloxane) Methylvinylsiloxane copolymer raw rubber in an amount of 4.0 moles of silicon-bonded hydrogen atoms in this component with respect to a total of 1 mole of vinyl groups), 2-methyl-3-butyn-2-ol 1 Further, 2 parts by mass are added and mixed.
  • a platinum 1,3-divinyl-1,1,3,3-tetramethyldisiloxane complex (the platinum metal in the complex is the dimethylpolysiloxane and the dimethylsiloxane ⁇
  • An amount of 50 ppm in terms of mass unit with respect to the total of the methyl vinylsiloxane copolymer raw rubber was mixed to prepare a toluene solution of a silicone-based pressure sensitive adhesive.
  • 1,3-divinyl-1,1,3,3-tetramethyldisiloxane complex of platinum (the platinum metal in this complex is expressed in mass units relative to the dimethylpolysiloxane).
  • a toluene solution of a silicone-based pressure sensitive adhesive was prepared.
  • the silicone-based pressure-sensitive adhesive of the present invention can form a pressure-sensitive adhesive layer with little migration, it covers a display portion of a portable small computer such as a mobile phone, a portable music player, and a portable personal computer. It is suitable for producing a protective film used in a manufacturing process of a cover glass or a touch panel. Further, the silicone-based pressure-sensitive adhesive of the present invention does not use an organic solvent or can reduce the amount of use thereof, so that the coating time can be shortened and a thick film pressure-sensitive adhesive layer is formed on the support. Is suitable for forming.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Adhesive Tapes (AREA)
  • Laminated Bodies (AREA)

Abstract

L'adhésif sensible à la pression à base de silicone de l'invention est constitué au moins (A) d'un organopolysiloxane dont la viscosité à 25°C est supérieure ou égale à 100mPa.s, et inférieure ou égale à 10000mPa.s, et qui possède au moins deux groupes alcényle dans chaque molécule, (B) d'un organopolysiloxane dont la viscosité à 25°C dépasse 10000mPa.s, et qui possède au moins deux groupes alcényle dans chaque molécule, (C) d'un organopolysiloxane qui possède au moins trois atomes d'hydrogène liés à un atome de silicium dans chaque molécule, et (D) d'un catalyseur pour réaction d'hydrosilylation. Une couche adhésive sensible à la pression à base de silicone peu susceptible de migrer vers un support lors d'un pelage répété, est formée.
PCT/JP2016/001181 2015-03-05 2016-03-03 Adhésif sensible à la pression à base de silicone, et stratifié possédant une couche adhésive sensible à la pression à base de silicone WO2016139956A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2017503358A JP6663418B2 (ja) 2015-03-05 2016-03-03 シリコーン系感圧接着剤、およびシリコーン系感圧接着層を有する積層体
KR1020177023418A KR20170126874A (ko) 2015-03-05 2016-03-03 실리콘계 감압 접착제 및 실리콘계 감압 접착층을 갖는 적층체
CN201680012561.0A CN107250313B (zh) 2015-03-05 2016-03-03 有机硅类压敏粘接剂和具有有机硅类压敏粘接层的叠层体

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JP2015-043149 2015-03-05
JP2015043149 2015-03-05

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WO2016139956A1 true WO2016139956A1 (fr) 2016-09-09

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KR (1) KR20170126874A (fr)
CN (1) CN107250313B (fr)
TW (1) TWI688629B (fr)
WO (1) WO2016139956A1 (fr)

Cited By (5)

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WO2020121930A1 (fr) * 2018-12-13 2020-06-18 ダウ・東レ株式会社 Composition adhésive à base de silicones et son utilisation
JP2021500417A (ja) * 2017-10-19 2021-01-07 ダウ シリコーンズ コーポレーション 感圧接着剤組成物およびその調製方法ならびにフレキシブル有機発光ダイオード用途での使用
CN112673073A (zh) * 2018-08-10 2021-04-16 陶氏东丽株式会社 压敏粘接层形成性聚有机硅氧烷组合物及其使用
WO2022138345A1 (fr) * 2020-12-25 2022-06-30 ダウ・東レ株式会社 Composition adhésive à base de silicones et son utilisation
JP7465284B2 (ja) 2019-04-25 2024-04-10 サムスン エスディアイ カンパニー，リミテッド シリコン系粘着性保護フィルム及びそれを含む光学部材

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