Kanegafuchi Kagaku Kogyo Kabushiki Kaisha

Tetsuo Mita

Katsuhiko Isayama

Nobutaka Tani

Junji Takase

Hirokazu Nakanishi

Hirotazu Nakanishi

A curable composition comprising an organic polymer containing at least one hydrolyzable a group attached to the silicon per polymer molecule and having a molecular weight within the range of 300 to 15,000, wherein a curing catalyst comprising tin II salt of organic carboxylic acid and/or lead II salt of organic carboxylic acid is used in combination with an acid material and/or a basic material, thereby unexpectedly improving the set resistance thereof. The composition may be utilized as a sealant which cures upon exposure to moisture to form a rubber like substance having improved set resistance.

Curable composition comprising polyether having silyl group

Compositions curable upon exposure to atmospheric moisture at room temperature comprising (a) organic polymer having at least one hydrolyzable silicon-containing group in the molecule and having a molecular weight from about 500 to 15,000 and (b) a photocurable substance.

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Kobe, Japan

Tetsuo Mita