Dow Corning Toray Silicone Company Limited

Dow Corning Toray Silicone

Dow Corning Toray Silicones, Ltd.

Osamu Takuman

Takao Matsushita

Makoto Yoshitake

Akito Nakamura

Wataru Nishiumi

Hideo Shinmi

An adhesive for silicone rubber, comprising at least the following: A 100 parts by weight of an organopolysiloxane having an average of two or more alkenyl groups per molecule; B an organopolysiloxane having an average of two or more silicon bonded hydrogen atoms in each molecule, used in an amount such that the molar ratio of silicon bonded hydrogen atoms in component B to alkenyl groups in component A at which the molar ratio of the silicon bonded hydrogen atoms in this component to the alkenyl groups in component A is from 0.01 to 20 (i.e. from 1:100 to 20:1); C from 5 to 200 parts by weight of calcium carbonate powder with a BET specific surface area of from 5 to 50 m g; and D a platinum-based catalyst, used in an amount capable of inducing curing in the present composition.

Adhesive for silicone rubber

A silicone rubber composition comprising (A) 100 weight parts of a polydiorganosiloxane mixture comprising (i) 1 to 99 wt % polydiorganosiloxane having at least two silicon atom-bonded vinyl groups per molecule and (ii) the remaining percentage of polydiorganosiloxane having at least two non-vinyl silicon atom-bonded alkenyl groups per molecule, (B) a polyorganosiloxane having at least two silicon atom-bonded hydrogen atoms per molecule, (C) 0.1 to 10 weight parts of a silatrane derivative described by general formula

Silicone rubber composition

Heat-curable silicone rubber composition

A silicone rubber composition for application as electrical insulation that cures into a highly water-resistant silicone rubber that has excellent electrical properties and in particular has excellent high-voltage electrical insulation properties. The silicone rubber composition comprises

Silicone rubber composition for application as electrical insulation

Silicone rubber composition and method for the preparation thereof

A silicone rubber composition that cures into a highly flame-retardant silicone rubber with excellent electrical insulation characteristics and that does so without sacrificing mechanical strength. The silicone rubber composition comprises:

A heat-curable silicone rubber composition whose cure provides silicone rubber with excellent high-voltage electrical insulating properties. The heat-curable silicone rubber composition comprises:

A curable silicone rubber composition comprising (A) organopolysiloxane comprising at least 2 silicon atom-bonded alkenyl groups in each molecule described by formula R.sub.a SiO.sub.(4-a)/2, where R represents a substituted or unsubstituted monovalent hydrocarbon group and a is a number from 1.95 to 2.05; (B) fine powdery silica; (C) a reaction mixture of (a) a platinum compound and (b) a compound containing an alkynyl group and an alcoholic hydroxy group in each molecule; and (D) a curing agent. The present invention is also a manufacturing method of curable silicone rubber composition. The curable silicone rubber compositions have an excellent flame-retarding property and good tracking resistance and other electrical properties.

Curable silicone rubber composition and manufacturing method thereof

The present invention is silicone rubber compositions the exhibit high mechanical strength and excellent electrical properties such as tracking resistance, arc resistance, and erosion resistance. The improved properties are obtained by incorporation in the compositions aluminum hydroxide powder which has been treated with a treating agent selected from the group consisting of silanes and siloxanes having alkenyl and alkoxy or hydroxy substitution.

Growing community of inventors

Chiba Prefecture, Japan

Osamu Takuman