Nippon Steel Chemical Co., Ltd.

Mitsuhiro Koike

Takashi Saito

Yuko Murakami

Disclosed is a cage-type copolymer in which a cage structure is incorporated in its main chain. Also disclosed is a curable resin composition comprising the said copolymer. Specifically disclosed is a curable cage-type silicone copolymer with a constituent unit represented by general formula (1) Y&#x2014;[Z&#x2014;(O&#x2014;RSiO)&#x2014;(RSiO)&#x2014;(O)]&#x2014;Z&#x2014;Y: wherein Rand Reach is a vinyl group, an alkyl group, a phenyl group, a (meth)acryloyl group, an allyl group, or an oxirane ring-containing group, Z is a divalent group represented by the following general formula (2) wherein Ris a hydrogen atom, a vinyl group, an alkyl group, a phenyl group, a (meth)acryloyl group, an allyl group, or an oxirane ring-containing group, and Y is any one of the groups represented by the following general formula (3) [(RO)RSiO]&#x2014;[RSiO]&#x2014;[O]&#x2014;, general formula (4) [RO]&#x2014;[RSiO]&#x2014;[O&#x2014;RSiO]&#x2014;, general formula (5) (RO)&#x2014;, and general formula (6) (RSiO)&#x2014; wherein Ris a hydrogen atom, a methyl group, or an ethyl group.

Curable cage-type silicone copolymer and process for production thereof and curable resin composition comprising curable cage-type silicone copolymer and cured product thereof

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Kisarazu, Japan

Mitsuhiro Koike