Abstract: A curable organopolysiloxane composition comprising: (A) at least one type of gum-like or liquid organopolysiloxane having a viscosity of not less than 20 mPa·s, a content of the vinyl(CH2?CH—) part of higher alkenyl groups being in a range of 2.0 to 5.0% by mass; (B) an organopolysiloxane resin formed essentially from R13SiO1/2 units and SiO4/2 units, a molar ratio of the R13SiO1/2 units to the SiO4/2 units being from 0.5 to 2.0 and a content of the vinyl(CH2?CH—) part of alkenyl groups being less than 1.0% by mass; (C) an organohydrogenpolysiloxane; (D) a hydrosilylation reaction catalyst; and, optionally, (E) an organic solvent. In such a composition, a mass ratio of the component (A) to the component (B) is in a range of 2/8 to 8/2.

Abstract: A solvent-type curable organopolysiloxane composition comprising (A) at least one type of gum-like or liquid organopolysiloxane having a viscosity of not less than 20 mPA·s, a content of the vinyl(CH2?CH—) part of higher alkenyl groups being in a range of 2.0 to 5.0% by mass; (B) an organopolysiloxane having a viscosity of not less than 1,000,000 mPa·s, a content of the vinyl(CH2?CH—) part of alkenyl groups being less than 0.1% by mass; (C) an organohydrogenpolysiloxane; (D) a hydrosilylation reaction catalyst; and (E) an organic solvent. In such a composition, a mass ratio of the component (A) to the component (B) is in a range of 2/8 to 8/2.

Abstract: A releasing laminate comprises a substrate; (A) a silicone release layer on the substrate; and (B) an adhesive layer on (A) the silicone release layer. (A) The silicone release layer is formed by curing a releasing cured film-forming organopolysiloxane composition. The releasing cured film-forming organopolysiloxane composition comprises: (a) an organopolysiloxane having at least two silicon-bonded alkenyl groups in the molecule; (b) an organohydrogenpolysiloxane; and (c) a hydrosilylation reaction catalyst. Component (a) has a tetra(4)mer to eicosa(20)mer cyclic siloxane content less than or equal to 1,000 ppm in terms of mass units. (B) The adhesive layer comprises an aqueous adhesive composition. A method for producing the releasing laminate is also disclosed.

Abstract: To provide a laminate comprising a substrate and a cured silicone product, wherein the substrate and the cured silicone product are integrated well and the cured silicone product provides superior electrification preventing or reducing properties to the laminate. A laminate comprising: a substrate (L1), a primer layer (L2) formed on the substrate (L1), and a cured silicone layer (L3) including a lithium salt (a) and a polyether modified polysiloxane (b), which is formed on the primer layer (L2). The laminate can be used for a releasable or adhesive film.

Abstract: To provide a release modifier which provides a heavy release force to a cured release layer of silicone coating composition. The release modifier comprises an organopolysiloxane resin-organopolysiloxane condensation reaction product that is obtained by the condensation reaction of (a1) 100 weight parts of MQ-type organopolysiloxane resin in which the molar ratio of the M unit to the Q unit is 0.6 to 1.0 and the content of the hydroxyl group or alkoxy group is 0.3 to 2.0 weight % with (a2) 20 to 150 weight parts of chain-form diorganopolysiloxane that has an average degree of polymerization of 100 to 1000 and at least one hydroxyl group or alkoxy group; this organopolysiloxane resin-organopolysiloxane condensation reaction product preferably has a prescribed hydroxyl group content.

Abstract: Imparting superior electrification preventing or reducing properties to a cured silicone product without inhibiting adhesion between a substrate and the cured silicone product when integrating the substrate and the cured silicone product via a primer layer. A condensation reaction curable primer composition comprising a lithium salt (a) and a polyether modified polysiloxane (b); and a laminate obtained by integrating a substrate and a cured silicone product using an electrification preventing or reducing primer layer (cured product of the composition).

Abstract: Silicone-based pressure-sensitive adhesive composition comprising 100 parts (A) a branched organopolysiloxane having on molecular terminals at least two alkenyl groups and represented by (R3SiO1/2)4-p(R1R2SiO1/2)p(R2SiO)m(RR1SiO)n(SiO4/2), to 400 parts (B) an organopolysiloxane composed of R3R22SiO1/2 units and SiO4/2 units, (C) an organohydrogenpolysiloxane, and a catalytic quantity of (D) a platinum-type catalyst. Pressure-sensitive adhesive tape or sheet having an adhesive layer in the form of a cured layer of the aforementioned composition.

Abstract: A silicone-type pressure-sensitive adhesive composition comprising (A) 100 weight parts of organopolysiloxane condensation reaction product that has at least two alkenyl groups and that is yielded by a condensation reaction between (a) hydroxyl-functional diorganopolysiloxane and (b) organopolysiloxane resin, (B) organohydrogenpolysiloxane having at least two silicon-bonded hydrogen atoms in the molecule, in an amount sufficient to provide from 1 to 200 silicon-bonded hydrogen atoms with reference to all the alkenyl groups in the composition, (C) an organotitanium compound, at from 0.1 to 20 weight parts, and (D) a platinum catalyst in a catalytic quantity.

Abstract: A silicone-based pressure-sensitive adhesive composition comprising (A) a condensation-reaction product obtained by subjecting a diorganopolysiloxane having silanol groups on both molecular terminals and 2 or more silicon-bonded alkenyl groups located in side molecular chains in one molecule (a) and organopolysiloxane resin having one or more hydrolyzable groups in one molecule (b) to a condensation reaction in the presence of catalyst (c), (B) an organohydrogenpolysiloxane, (C) a diorganopolysiloxane having silicon-bonded alkenyl groups on both molecular terminals, (D) an organopolysiloxane resin and (E) a platinum catalyst.

Abstract: A solventless cured release coating-forming organopolysiloxane composition having a viscosity at 25° C. of 50 to 2,000 mPa·s comprising (A) 100 weight parts of an alkenyl-functional diorganopolysiloxane that has a viscosity of 25 to 1,000 mPa·s; (B) 0.5 to 15 weight parts of a diorganopolysiloxane that has a viscosity of at least 10,000 mPa·s and that has an aliphatically unsaturated group content of no more than 0.1 mole %; (C) 0.5 to 5 weight parts of a branched organopolysiloxane that has more than one SiO4/2 unit and that is a polymer product provided by an equilibration polymerization between a branched organosiloxane oligomer represented by the average siloxane unit formula (1) (SiO4/2)(RaRb2SiO1/2)x(1) and a diorganosiloxane oligomer; (D) a specific amount of an organohydrogenpolysiloxane that has a viscosity of 1 to 1,000 mPa·s; and (E) a hydrosilylation reaction catalyst in a catalytic quantity.

Abstract: To provide a release modifier which provides a heavy release force to a cured release layer of silicone coating composition. The release modifier comprises an organopolysiloxane resin-organopolysiloxane condensation reaction product that is obtained by the condensation reaction of (a1) 100 weight parts of MQ-type organopolysiloxane resin in which the molar ratio of the M unit to the Q unit is 0.6 to 1.0 and the content of the hydroxyl group or alkoxy group is 0.3 to 2.0 weight % with (a2) 20 to 150 weight parts of chain-form diorganopolysiloxane that has an average degree of polymerization of 100 to 1000 and at least one hydroxyl group or alkoxy group; this organopolysiloxane resin-organopolysiloxane condensation reaction product preferably has a prescribed hydroxyl group content.

Abstract: Silicone-based pressure-sensitive adhesive composition comprising 100 parts (A) a branched organopolysiloxane having on molecular terminals at least two alkenyl groups and represented by (R3SiO1/2)4-p(R1R2SiO1/2)p(R2,SiO)m(RR1SiO)n(SiO4/2), to 400 parts (B) an organopolysiloxane composed of R3R2SiO1/2 units and SiO4/2 units, (C) an organohydrogenpolysiloxane, and a catalytic quantity of (D) a platinum-type catalyst. Pressure-sensitive adhesive tape or sheet having an adhesive layer in the form of a cured layer of the aforementioned composition.

Abstract: A silicone-type pressure-sensitive adhesive composition comprising (A) 100 weight parts of organopolysiloxane condensation reaction product that has at least two alkenyl groups and that is yielded by a condensation reaction between (a) hydroxyl-functional diorganopolysiloxane and (b) organopolysiloxane resin, (B) organohydrogenpolysiloxane having at least two silicon-bonded hydrogen atoms in the molecule, in an amount sufficient to provide from 1 to 200 silicon-bonded hydrogen atoms with reference to all the alkenyl groups in the composition, (C) an organotitanium compound, at from 0.1 to 20 weight parts, and (D) a platinum catalyst in a catalytic quantity.

Abstract: A silicone-based pressure-sensitive adhesive composition comprising (A) a condensation-reaction product obtained by subjecting a diorganopolysiloxane having silanol groups on both molecular terminals and 2 or more silicon-bonded alkenyl groups located in side molecular chains in one molecule (a) and organopolysiloxane resin having one or more hydrolyzable groups in one molecule (b) to a condensation reaction in the presence of catalyst (c), (B) an organohydrogenpolysiloxane, (C) a diorganopolysiloxane having silicon-bonded alkenyl groups on both molecular terminals, (D) an organopolysiloxane resin and (E) a platinum catalyst.

Abstract: A peroxide-curable silicone-based pressure-sensitive adhesive composition comprising (A) a diorganopolysiloxane having silicon-bonded alkenyl groups at both molecular terminals used in amount of 100 parts by weight; (B) an organopolysiloxane resin having one or more silanol(OH) groups in one molecule and consisting of R32(OH) SiO1/2 units (where R3 independently stands for non-substituted or substituted monovalent hydrocarbon groups having 1 to 10 carbon atoms), R33SiO1/2 units (wherein R3 is the same as defined above), and SiO4/2 units, used in amount of 10 to 200 parts by weight; and (C) one or more types of organic peroxide compounds used in a catalytic quantity.

Abstract: A solvent free silicone composition for forming a cured release coating comprising (A) 100 parts by weight of a diorganopolysiloxane having in each molecule at least two alkenyl groups and a viscosity of 50 to 5,000 mPa·s at 25° C.; (B) 3 to 50 parts by weight of an organohydrogenpolysiloxane mixture comprising constituent (b-1) and constituent (b-2) in a weight ratio of 1:0.01 to 1:1, where (b-1) is a diorganopolysiloxane having a viscosity of 1 to 1,000 mPa·s at 25° C. and having both molecular terminals capped with silicon-bonded hydrogen atoms and (b-2) is an organohydrogenpolysiloxane having a viscosity of 1 to 1,000 mPa·s at 25° C. and having at least three pendant silicon-bonded hydrogen atoms in each molecular chain; and (C) a catalytic amount of a platinum-type catalyst.

Abstract: A solvent free silicone composition for forming a cured release coating comprising (A) 100 parts by weight of a diorganpolysiloxane having in each molecule at least two alkenyl groups and a visocisity of 50 to 5,000 mPa-s at 25 ° C.; (B) 3 to 50 parts by wight of an organohydrogenpolysilozane mixture comprising constituent (b-1) and consitiuent (b-2) in a weight ratio of 1:0.01 to 1:1, where (b-1) is a diorganopolysilozane having a visocsity of 1 to 1,000 mP-s at 25 ° and having both molecular terminals capped with silicon-bonded hydrogen atoms and (b-2) is an organhydrogenpolysilozane having a visocity of 1 to 1,000 mPa-s at 25 ° C. and having at least three pendant silicon-bonded hyhdrogen atoms in each molecular chain; and (C) a catalyic amount of a platinum-type catalyst.

Abstract: This invention relates to a silicone composition comprising: (A) a mixture of (i) a linear trimethylsiloxy-terminated polydiorganosiloxane containing at least 2 alkenyl groups having at least 4 carbon atoms and (ii) optionally a linear dimethylalkenylsiloxy-terminated polydiorganosiloxane, (B) a polyorganohydrogensiloxane, (C) a catalytic quantity of a platinum catalyst, and (D) an inhibitor. The silicone compositions of this invention make it possible to form cured release films with low resistance to peeling when peeling is carried out at high speeds, and with the possibility of controlling the resistance to peeling between low and high values when peeling is carried out at low speeds. The silicone compositions of this invention also are not subject to a decrease in the coefficient of residual adhesion in the adhesive material applied onto a cured release film.

Abstract: This invention relates to a silicone release coating comprising (A) an organopolysiloxane having at least two crosslinkable carbon-carbon double bonds in each molecule, (B) an organopolysiloxane having at least two Si-bonded hydrogen atoms in each molecule, (C) a silylated polymethylsilsesquioxane and (D) platinum catalyst. The silicone release coating compositions of this invention can further comprise an inhibitor. The silicone release coating compositions of this invention do not decline in release resistance due to release paper aging or release liner aging.

Abstract: This invention relates to a silicone release coating composition comprising (A) a diorganopolysiloxane having at least two alkenyl groups in each molecule, (B) an organohydrogenpolysiloxane having at least three silicon-bonded hydrogen atoms in each molecule, (C) a mixture of an alkynyl alcohol and an organosiloxane having at least one aliphatic triple bond-containing alkoxy group, and (D) a platinum group metal catalyst. The silicone release coating compositions of this invention have superior curability and storage stability at room temperature, and produce a uniform coating when used in thin film form on applicator rolls.