Shin-etsu Chemical Co., Ltd.

Toshiaki Takahashi

Hironao Fujiki

Mikio Shiono

Jun Hatakeyama

Takeshi Kinsho

Tsutomu Ogihara

Toshinobu Ishihara

Yoshio Kawai

Tohru Kubota

Mutsuo Nakashima

Takaaki Shimizu

Jun Watanabe

Tatsushi Kaneko

Hiroyasu Hara

Shigeki Shudo

Hideshi Kurihara

Ryuichi Saito

Takeshi Miyao

Polymers, resist compositions and patterning process

Liquid crystal compositions which can improve the low .DELTA.n (refractive index anisotropy) of conventional liquid crystal compositions containing a silacyclohexane compound and which retain a low viscosity and hence show no decrease in response speed. Liquid crystal compositions having a high .DELTA.n of 0.13 to 0.25, a low viscosity of 30 cp or less, a low threshold voltage and a high voltage holding ratio can be obtained by adding thereto, as a required component, a compound having both a silacyclohexane ring and a tolan structure, or a miture of a compound having a silacyclohexane ring and a compound having a tolan structure.

Liquid crystal compositions and liquid crystal display elements

An adhesive silicone composition comprising a diorganopolysiloxane, an organohydrogenpolysiloxane, and a platinum catalyst is blended with an organohydrogenpolysiloxane having at least two hydrogen atoms each bonded to a silicon atom in a molecule and containing an aromatic ring-bearing hydrocarbon radical in an amount of at least 12 mol % of the entire monovalent organic radicals bonded to silicon atoms, or a compound containing at least one hydrogen atom bonded to a silicon atom in a molecule and having a radical of two benzene rings separated by --R.sup.13 R.sup.14 Si--, --R.sup.13 R.sup.14 SiO--, --OR.sup.13 R.sup.14 SiO-- or --R.sup.13 R.sup.14 SiOR.sup.13 R.sup.14 Si-- wherein R.sup.13 and R.sup.14 are a monovalent hydrocarbon radical. The composition firmly adheres to organic resins, but is readily releasable from metal molds.

Adhesive silicone compositions

A curable organopolysiloxane composition comprising (A) an organopolysiloxane having at least two alkenyl groups and a viscosity of 100 to 200,000 cs, (B) a specific organopolysiloxane having an alkoxysilyl group, (C) an organohydrogen polysiloxane having at least two hydrogen atoms attached to silicon atoms, and (D) an addition reaction catalyst is improved in adhesion. It cures to substrates of metals, glass, rubber and plastics to form a firm bond even in low temperature or brief high temperature curing conditions.

Curable organopolysiloxane compositions

An organopolysiloxane-based adhesive composition is proposed which exhibits very reliable adhesive bonding by being cured not only at an elevated temperature but also at room temperature. The adhesive composition comprises, in addition to an alkenyl group-containing diorganopolysiloxane, an organohydrogenpolysiloxane, which serves as a crosslinking agent of the alkenyl group-containing diorganopolysiloxane by the hydrosilation reaction, and a platinum compound to catalytically promote the reaction, a compound having an .alpha.-substituted or unsubstituted .beta.-aminopropionyl group and an alkoxysilyl-substituted alkyl group such as the compounds of the formulas

Adhesive organopolysiloxane composition

This invention discloses an adhesive organopolysiloxane compositions which cure in the presence of addition reaction catalysts and adhere firmly to various materials when they harden comprising;

Adhesive composition

Novel alkoxysilanes of the general formula: ##STR1## wherein letter a is equal to 2 or 3, b is equal to 0, 1, 2 or 3, and n is an integer of from 2 to 10 are useful agents for controlling curing reaction of addition type curable silicone compositions.

Novel alkoxysilanes

A curable silicone composition comprising:

Growing community of inventors

Annaka, Japan

Toshiaki Takahashi