Kaneka Corporation

Noriko Noro

Toshihiko Okamoto

Hiroshi Iwakiri

Katsuyu Wakabayashi

Ayako Yano

Yoshikazu Morii

Shintaro Komitsu

The present invention aims to provide a curable composition without adverse effects on the environment, which exhibits excellent curability without containing a toxic organotin curing catalyst, and gives a cured product that does not have discoloration and cracks on the surface thereof even after being exposed to the atmosphere and ultraviolet light for a long time. The present invention also aims to provide the cured product. The curable composition comprises: (A) an organic polymer having a reactive silyl group; (B) a guanidine compound having a specific structure; and (C) a phosphorus compound that has an aryl group, has a phosphorus atom with an oxidation number of +5, and has a melting point of 23&#xb0; C. or higher.

Curable composition and cured product thereof

The present invention has its object to provide a curable composition which comprises a reactive silyl group-containing organic polymer, does not contain, as a silanol condensation catalyst, any organotin type curing catalyst currently of concern because of the toxic feature thereof, is excellent in surface curability and depth curability and, further, can provide cured products excellent in adhesiveness; the above object can be achieved by a curable composition which comprises: an organic polymer (A) containing a silicon-containing group capable of crosslinking under siloxane bond formation; and a guanidine compound (B-1), as a silanol condensation catalyst (B), represented by the general formula (1):RN&#x2550;C(NR)&#x2003;&#x2003;(1)(wherein one of the five Rs is an aryl group and the other four Rs each independently is a hydrogen atom or a hydrocarbon group in which the carbon atom at position 1 is saturated).

Curable composition

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Takasago, Japan

Noriko Noro