The Yokohama Rubber Co., Ltd.

Sika Hamatite Co., Ltd.

Tsubasa Ito

Kazunori Ishikawa

Takeaki Saiki

Yoshihito Takei

Emi Kim

A photocurable resin of the present technology contains: a main backbone chain having repeating units represented by Formulas (Ia) and (Ib), and a (meth)acryloyl group and a non-photoreactive group at terminals; the non-photoreactive group being at least one type selected from the group consisting of saturated hydrocarbon groups and aromatic hydrocarbon groups which optionally have a heteroatom; a hydroxy group, an amino group, &#x2014;CH&#x2550;NH, a carboxy group, or a mercapto group being not bonded to an end of the non-photoreactive group; a content of the repeating unit represented by Formula (Ia) being greater than 15 mol % of an amount of the main backbone chain; and contents of the (meth)acryloyl group and the non-photoreactive group each being 5 mol % or greater of an amount of the ends. 

Photocurable resin, mixture, and photocurable resin composition

The object of the present invention is to provide a curable resin composition having excellent adhesion. This curable resin composition contains: a straight-chain organopolysiloxane (A) having at least two silicon-bonded hydrogen atoms and at least one aryl group in each molecule, the degree of polymerization being greater than 10; a branched-chain organopolysiloxane (B) having at least three alkenyl groups and at least one aryl group in each molecule; and a hydrosilylation reaction catalyst (C).

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Hiratsuka, Japan

Tsubasa Ito