| CPC C08K 5/55 (2013.01) [C08F 22/14 (2013.01); C08K 9/06 (2013.01); C09J 11/04 (2013.01); C09J 11/06 (2013.01); C09J 135/02 (2013.01); C09K 3/10 (2013.01); C08K 2201/005 (2013.01); C08K 2201/011 (2013.01); C09K 2200/0625 (2013.01)] | 20 Claims | 
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               1. A resin composition comprising: 
            (A) a polymer having two or more (meth)acryloyl groups in one molecule thereof; 
                (B) a silica powder surface-treated with an alkyl silane; and 
                (C) boric acid or a borate ester, wherein 
                a mass ratioofthecomponent(B):the component (C) is 9:1 to 1:9, and 
                said two or more (meth)acryloyl groups are represented by —C(═O)—CR=CH2, wherein R is hydrogen or a methyl group. 
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