C08K5/5403

Photoactivatable system for inhibiting hydrosilylation

The present invention relates to a hardenable silicone composition including an irradiation-activated system for temporarily inhibiting the hydrosilylation reaction. Said system includes at least one inhibitor selected from among α-acetylenic alcohols, α-α′-acetylenic diesters, conjugated ene-yne compounds, α-acetylenic ketones, acrylonitriles, maleates, fumarates, the mixture thereof, at least one photoinitiator, and tris(trimethylsilyl)silane (TTMSS). The invention also relates to a method for preparing a silicone coating and hard elastomer materials provided comprising said silicone composition.

METHOD FOR PRODUCING THERMALLY CONDUCTIVE SHEET AND MULTILAYER BODY
20230173793 · 2023-06-08 · ·

The method for producing a thermally conductive sheet according to the present invention comprises: a step (1) of obtaining a liquid composition comprising a curable silicone composition including an alkenyl group-containing organopolysiloxane and a hydrogen organopolysiloxane, a thermally conductive filler, and a volatile compound; a step (2) of sandwiching the liquid composition between two resin sheets at least one of which is a gas-permeable film and pressurizing these to obtain a sheet-shaped formed product; and a step (3) of heating the sheet-shaped formed product to volatilize at least a part of the volatile compound. According to the present invention, it is possible to provide a method for producing a thermally conductive sheet having a good sheet condition and a low thermal resistance value.

METHOD FOR PRODUCING THERMALLY CONDUCTIVE SHEET AND MULTILAYER BODY
20230173793 · 2023-06-08 · ·

The method for producing a thermally conductive sheet according to the present invention comprises: a step (1) of obtaining a liquid composition comprising a curable silicone composition including an alkenyl group-containing organopolysiloxane and a hydrogen organopolysiloxane, a thermally conductive filler, and a volatile compound; a step (2) of sandwiching the liquid composition between two resin sheets at least one of which is a gas-permeable film and pressurizing these to obtain a sheet-shaped formed product; and a step (3) of heating the sheet-shaped formed product to volatilize at least a part of the volatile compound. According to the present invention, it is possible to provide a method for producing a thermally conductive sheet having a good sheet condition and a low thermal resistance value.

Semiconducting compositions comprising semiconducting polymers

A semiconducting composition comprising a semiconducting polymer and a semiconducting non-polymeric polycyclic compound, wherein the semiconducting polymer comprises units of A and/or B: ##STR00001##
wherein R.sub.1, R.sub.2, R.sub.5, R.sub.6, R.sub.7, R.sub.8, x, y, p, q, r, R.sub.3, R.sub.4, R.sub.9, R.sub.10 and R.sub.11 have any of the meanings defined in the description.

Semiconducting compositions comprising semiconducting polymers

A semiconducting composition comprising a semiconducting polymer and a semiconducting non-polymeric polycyclic compound, wherein the semiconducting polymer comprises units of A and/or B: ##STR00001##
wherein R.sub.1, R.sub.2, R.sub.5, R.sub.6, R.sub.7, R.sub.8, x, y, p, q, r, R.sub.3, R.sub.4, R.sub.9, R.sub.10 and R.sub.11 have any of the meanings defined in the description.

POLYMERIC MATERIAL FOR ACCOMMODATING INTRAOCULAR LENSES
20170247525 · 2017-08-31 · ·

The disclosure relates generally to a polymeric material for use in accommodating intraocular lenses for implantation in a lens chamber of a subject's eye. The present disclosure is directed to a polymeric material which comprises a fluorosilicone polymer and a silica component. The presently disclosed polymeric material is both optically clear and has a sufficiently low Young's modulus such that it can effectively respond to the eye's natural accommodative forces and thus can be used in accommodating intraocular lenses. When used in the fabrication of an intraocular lenses, the polymeric material disclosed herein protect the physical characteristics of the lens as the added hydrophobicity of the fluorosilicone polymer allows it to effectively resist diffusion of fluid from the eye and the adhesion of biologica materials.

POLYMERIC MATERIAL FOR ACCOMMODATING INTRAOCULAR LENSES
20170247525 · 2017-08-31 · ·

The disclosure relates generally to a polymeric material for use in accommodating intraocular lenses for implantation in a lens chamber of a subject's eye. The present disclosure is directed to a polymeric material which comprises a fluorosilicone polymer and a silica component. The presently disclosed polymeric material is both optically clear and has a sufficiently low Young's modulus such that it can effectively respond to the eye's natural accommodative forces and thus can be used in accommodating intraocular lenses. When used in the fabrication of an intraocular lenses, the polymeric material disclosed herein protect the physical characteristics of the lens as the added hydrophobicity of the fluorosilicone polymer allows it to effectively resist diffusion of fluid from the eye and the adhesion of biologica materials.

THERMALLY CONDUCTIVE MATERIAL

A thermally conductive material is provided. The thermally conductive material includes: a polymer containing a thermally conductive filler and an antioxidant; the polymer being a polymer of a monomer containing an acrylic ester, a hindered phenol-based antioxidant being contained as the antioxidant, a thermal conductivity being 3.2 W/m.Math.K or greater, and an initial Asker C hardness at ambient temperature being 22 or less.

THERMALLY CONDUCTIVE MATERIAL

A thermally conductive material is provided. The thermally conductive material includes: a polymer containing a thermally conductive filler and an antioxidant; the polymer being a polymer of a monomer containing an acrylic ester, a hindered phenol-based antioxidant being contained as the antioxidant, a thermal conductivity being 3.2 W/m.Math.K or greater, and an initial Asker C hardness at ambient temperature being 22 or less.

CURABLE ADHESIVE COMPOSITION

Compositions comprising a copolymer, an inorganic filler, and a moisture cure catalyst are described herein. In some instances, the copolymer can be derived from a (meth)acrylate, a carboxylic acid anhydride, and an aminosilane, wherein the aminosilane can be pendant from the copolymer backbone. In other instances, the copolymer can be derived from a (meth)acrylate and an organosilane in the absence of a chain transfer agent at a temperature of at least 150° C. Methods of making and using the compositions are further described. In some examples, the compositions are adhesive compositions and can be used in adhering two substrates, such as in floor covering.