Abstract: A curable composition which comprises (A) an organopolysiloxane represented by formula (1) (wherein R1 represents an alkyl group, R2 represents an alkyl or aryl group, R3 represents a hydrogen atom or methyl group, Me represents a methyl group, m is an integer of 1-10, and a and b are integers of 1 or larger, a+b being an integer of 3-120), (B) a photopolymerization initiator, and (C) a hydrosilylation catalyst and which has a surface tension at 23° C. of 23-30 mN/m and a viscosity at 23° C. of 5-80 mPa·s.

Abstract: This composition comprises: (A) one or both of (i) and (ii), said (i) being polysiloxane (1) having a viscosity of 50-10,000,000 mPa·s, R2R12SiO(R12SiO)mSiR12R2 ??(1), and said (ii) being polysiloxane (2), (R13 SiO1/2)p(R2aR13-aSiO1/2)q(SiO4/2)r ??(2); (B) hydrogen polysiloxane (3), (HbR13-bSiO1/2)s(R13SiO1/2)2-s(HR11SiO2/2)t(R12SiO2/2)u ??(3); (C) a hydrosilylation catalyst; and (D) at least one among linear organosiloxane (4), (AcR33-cSiO1/2)v(R33SiO1/2)2-v(AR31SiO2/2)w(R32SiO2/2)x ??(4), and cyclic organopolysiloxane (5), (AR31SiO2/2)y(R32SiO2/2)z ??(5) (A is an alicyclic epoxy group represented by formula (6)), wherein the ratio of the total number of SiH's to the number of unsaturated bonds between (D) and the alkenyl of (A) is 0.8-1.

Abstract: An ultraviolet ray-curable silicone adhesive agent composition comprising (A) a polysiloxane represented by formula (1): (R1SiO3/2)a1(R13SiO1/2)b1(X1O1/2)c1 (wherein R1 represents a monovalent hydrocarbon group wherein a methyl group accounts for 20 mol % or more and an alkenyl group accounts for 0.1 to 50 mol %; X1 represents a hydrogen atom or the like; a1 represents 0.1 to 1; b1 represents 0 to 0.75; and c1 represents 0 to 0.1; and the requirement represented by the formula: a1+b1+c1=1 is satisfied), (B) a polysiloxane represented by formula (2): (R23SiO1/2)a2(R22SiO)b2 (wherein R2 represents a monovalent hydrocarbon group wherein a methyl group accounts for 20 mol % or more and an alkenyl group accounts for 0.01 to 25 mol %; a2 represents 0.001 to 0.67; b2 represents 0.33 to 0.

Abstract: Provided is an organo-polysiloxane composition for use in release paper or release film, capable of forming a hardened coat having a low release force. The invention is an organo-polysiloxane composition for use in release paper or release film, containing the components (A) to (D). (A) An organo-polysiloxane having two or more silicon atom-bound alkenyl groups within one molecule: 100 parts by mass. (B) An organo-hydrogen polysiloxane having at least an average of two or more silicon atom-bound hydrogen atoms (Si—H groups) within one molecule: an amount such that the number of moles of the Si—H groups is equal to 1 to 5 times that of the number of moles of the alkenyl groups within the (A) component. (C) A compound having one or more (meth)acrylic groups within one molecule, and whereof the molecular weight is 72 to 1,000: 0.01 to 3 parts by mass with respect to 100 parts by mass of the (A) component.

Abstract: A resin composition includes: (a) a supported platinum catalyst having a structure shown by the following general formula (1) in which a platinum complex is supported on a surface of an inorganic oxide; and (b) a thermoplastic matrix resin. The resin composition is usable as an addition-reaction catalyst capable of imparting sufficient storability and quick curability to an addition-reaction curable composition. In the formula, L represents a ligand selected from carbon monoxide, an olefin compound, an amine compound, a phosphine compound, an N-heterocyclic carbene compound, a nitrile compound, and an isocyanide compound; and n represents the number of Ls and an integer from 0 to 2.

Abstract: A resin composition includes: (a) a supported platinum catalyst having a structure shown by the following general formula (1) in which a platinum complex is supported on a surface of an inorganic oxide; and (b) a thermoplastic matrix resin. The resin composition is usable as an addition-reaction catalyst capable of imparting sufficient storability and quick curability to an addition-reaction curable composition. In the formula, L represents a ligand selected from carbon monoxide, an olefin compound, an amine compound, a phosphine compound, an N-heterocyclic carbene compound, a nitrile compound, and an isocyanide compound; and n represents the number of Ls and an integer from 0 to 2.