Shin-etsu Chemical Co., Ltd.

Shin-etsu Corporation

Yoshifumi Harada

Hironao Fujiki

Yoshifumi Inoue

Atsushi Yaginuma

Takeshi Miyao

Masatoshi Arai

Masayuki Ikeno

Yoshio Inoue

Eiichi Tabei

Kei Miyoshi

Kouji Yokoo

An organic modified silicone resin composition includes: (A) an addition reaction product having two addition reactive carbon-carbon double bonds in one molecule, being a product of an addition reaction of (a) a compound shown by the general formula (1) having SiH groups and (b) a polycyclic hydrocarbon having addition reactive carbon-carbon double bonds; (B) a siloxane having an SiH group and an organic group substituted with an alkoxysilyl group and/or a siloxane having an SiH group and an organic group substituted with an epoxy group; (C) a compound having three or more SiH groups in one molecule; (D) a catalyst; and (E) fumed inorganic oxide. The formulation amount of the component (E) is 1 to 10 parts by mass relative to 100 parts by mass of the total amount of the components (A), (B), and (C); and having a viscosity of 10 to 100 Pa&#xb7;s at 25&#xb0; C. 

Organic modified silicone resin composition

Silicone rubber compositions comprising (A) an organopolysiloxane having at least two silicon-bonded alkenyl groups, (B) finely divided silica, (C) an adhesive component, (D) a silicone-soluble organopolysiloxane resin component bearing at least one alkenyl group, (E) an organohydrogenpolysiloxane containing SiH groups in a specific mole ratio to the alkenyl groups in components (A) and (D) combined, and (F) a platinum group catalyst, exhibit excellent adhesion to synthetic woven fabrics for air bags. When coated onto woven fabrics and cured, the compositions provide air bag base fabrics of outstanding flexibility, sealability and deployability which remain stable over time.

Silicone rubber composition for coating air bags

A solvent-free liquid silicone rubber composition comprising (A) an organopolysiloxane containing at least two alkenyl groups, (B) an organohydrogenpolysiloxane having at least two hydrogen atoms each attached to a silicon atom, (C) wet silica having a BET specific surface area of 150-250 m /g, a mean particle size of 0.01-20 &mgr;m, and a sodium ion content of up to 0.35 wt % Na O, (D) an adhesive agent, and (E) a platinum group catalyst is useful for coating onto air bag base fabric to form a thin film having good infiltration, strong adhesion and minimized surface tack.

Liquid silicone rubber coating composition and air bag fabric

A foamable silicone rubber composition is provided that includes:

Foamable silicone rubber composition

A room temperature curable silicone composition, comprising (A) 100 parts by weight of an organopolysiloxane each of both ends of which has one hydroxyl group, (B) 0.2 to 40 parts by weight of at least one compound selected from the group consisting of hydrolyzable silanes having 2 to 4 hydrolyzable groups and their partial hydrolysis-condensation products, (C) 1 to 100 parts by weight of a modified diorganopolysiloxane of which both ends have at least one group selected from the group consisting of a hydrogen atom, a substituted monovalent hydrocarbon group and alkoxy group having 1 to 10 carbon atoms, an unsubstituted hydrocarbon group and alkoxy group having 1 to 10 carbon atoms, and a hydroxyl group and that has a silicon-bonded modifying group made up of a substituted or unsubstituted monovalent organic group with 6 or more carbon atoms, and (D) a filler and a cured product thereof. A cured product good in peeling properties can be obtained.

Room temperature curable silicone composition

This composition comprises (A) an organopolysiloxane having at least two SiOH groups in its molecule, (B) an organopolysiloxane having at least two SiH groups in its molecule, (C) a platinum family metal catalyst, and (D) a hydroperoxide. By using the hydroperoxide as a catalyst-retarding agent in cure reaction of a dehydrogenation system in which hydrogen is a foaming agent, this composition has a long pot life and can be cured and foamed to produce a foamed cured product in the form of a sponge having uniform cells.

The room temperature curable organopolysiloxane composition comprises a silane compound having a group represented by the following formula: ##STR1## wherein R is a hydrogen atom or a monovalent hydrocarbon group, as an adhesion assistant. The composition has the merit of good adhesive properties, particularly for chlorinated polyethylene.

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Gunma-ken, Japan

Yoshifumi Harada