Shin-etsu Chemical Co., Ltd.

Tsuyoshi Matsuda

Takafumi Sakamoto

Nobuaki Matsumoto

Kohei Otake

Toshiyuki Ozai

Atsushi Yaginuma

Taichi Kitagawa

Miyuki Tanaka

Kazuyasu Sato

Ken Nakayama

Provided are a low-viscosity ultraviolet curable silicone composition capable of being used even in a surface exposure method and a lift-up method etc.; and a cured product superior in tensile strength and elongation at break. The ultraviolet curable silicone composition contains:

Ultraviolet curable silicone composition and cured product thereof

This silicone gel composition contains The silicone gel composition can provide a silicone gel cured product that is a silicone gel having excellent heat resistance and adhesiveness to metals at high temperature and having a high penetration, that is capable of maintaining a low elastic modulus and a low stress even in use at high temperature for long periods of time, and that enables reduction of the occurrence of bubbles and reduction of deterioration in releasability from a substrate and in electrical insulating properties.

Silicone gel composition and cured product thereof, and power module

Provided is a silicone gel composition containing, as essential components: Curing the silicone gel can provide a silicone gel cured product which has a degree of penetration of 40-100 as defined according to JIS K2220, has a free oil content of 15 mass % or less, has a low modulus and low stress, and does not exhibit oil bleeding over time.

Silicone gel composition, cured product thereof, and power module

This ultraviolet curable silicone adhesive composition that contains (wherein Rrepresents H or Me, a represents a number of 1-3, and the broken line represents a bonding hand that is bonded with Si)as Si-bonded groups, and wherein the main chain is composed of repeated diorganosiloxane units, and (wherein a is as defined above, and the broken line represents a bonding hand)at an end of the molecular chain or in a molecular side chain as an Si-bonded group, is rapidly cured by means of irradiation of ultraviolet light, and exhibits good adhesion to a sheet-like substrate.

Ultraviolet curable silicone adhesive composition and silicone adhesive film

An ultraviolet curable organopolysiloxane composition which contains: (in the formulae, a represents a number of 1-3; and the broken line represents a bonding hand); With use of this ultraviolet curable organopolysiloxane composition, the hardness of a cured product obtained therefrom is easily controlled, and good surface curability and good curability in deep portions are achieved even in the presence of oxygen. Consequently, this ultraviolet curable organopolysiloxane composition enables the achievement of a silicone gel (a gel-like cured product) which has been cured at a substantially uniform crosslinking density (with a substantially uniform penetration) without depending on the irradiance of ultraviolet light (the amount of irradiation energy).

Ultraviolet curable organopolysiloxane composition, silicone gel cured product and method for producing same, and pressure sensor

An ultraviolet-curable pressure-sensitive silicone adhesive composition which comprises: 100 parts of an organopolysiloxane (A) having, in the molecule, two groups represented by general formula (1) (wherein Rrepresents a Cmonovalent hydrocarbon group, Rrepresents an oxygen atom, etc., Rrepresents an acryloyloxyalkyl group, etc., p and a respectively indicate numbers satisfying 0&#x2264;p&#x2264;10 and 1&#x2264;a&#x2264;3); 1-500 parts of a monofunctional (meth)acrylate compound (B) containing no siloxane structure and/or a polyfunctional (meth)acrylate compound (C) containing no siloxane structure; 1-5,000 parts of an oranopolysiloxane resin (D) comprising RSiOunits (a) (wherein Rrepresents a Cmonovalent hydrocarbon group) and SiOunits (b), the (a)/(b) molar ratio being (0.6-1.2)/1; and 0.01-20 parts of a photopolymerization initiator (E). This composition has satisfactory applicability and curability and gives a cured object which, when used as a temporary fixer, has excellent tackiness and strength.

Ultraviolet-curable pressure-sensitive silicone adhesive composition and cured object obtained therefrom

A UV curable organopolysiloxane composition includes: wherein Rand Rindependently represent a monovalent hydrocarbon group, 'a' is an integer of 1 to 3, and a chain line indicates a bond; wherein Rand Rindependently represent a monovalent hydrocarbon group, 'a' is as defined above, and a chain line indicates a bond; and

UV-curable organopolysiloxane composition, silicone gel cured product, and pressure sensor

A curable silicone gel composition that is of low viscosity, exhibits good fluidity, and generates a silicone gel that exhibits good resistance to external stress and thermal stress. The composition includes (A) a specific organopolysiloxane having at least two alkenyl groups within each molecule, (B) an organohydrogenpolysiloxane having a specific branched main chain structure, containing at least three SiH groups within each molecule, and also containing at least one branch-forming unit within each molecule, and (C) a platinum-based catalyst, wherein the cured product has a penetration value of 10 to 200, and loss coefficient values at 25&#xb0; C. for shear frequency values of 1 Hz and 10 Hz of 0.1 to 1.0 and 0.3 to 1.5 respectively.

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Annaka, Japan

Tsuyoshi Matsuda