Kanegafuchi Kagaku Kogyo Kabushiki Kaisha

Kanegafuchi Chemical Industry Co., Ltd.

Manabu Tsumura

Toshifumi Hirose

Takahisa Iwahara

Jun Kotani

Masafumi Hiraishi

A silicon-containing polymer comprising a structural unit of the formula (1): ##STR1## wherein R.sup.1 and R.sup.2 are the same or different and represent a monovalent organic group having 1 to 20 carbon atoms, and the benzene ring may have a substituent, which has good heat resistance.

Silicon-containing polymer, process for preparing the same and monomer

A curable composition providing a cured product having a silicon type interpenetrating polymer network, which comprises (A) a silsesquioxane ladder polymer, (B) a silicon compound having at least two SiH groups per molecule, (C) a silicon compound having at least two vinylsilyl groups per molecule and (D) a neutral platinum catalyst; and a process for producing a molded article comprising heating the curable composition under a controlled temperature for synchronously causing hydrolysis and condensation of the alkoxysilyl group and/or silanol group and hydrosilylation.

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Hyogo, Japan

Manabu Tsumura