Patent ID: 7851547

Claim:
A curable composition comprising: (A) an organic/inorganic composite in which a hydrolyzable silyl group and/or SiOH group-containing polysiloxane is bonded to a vinyl polymer through a Si—C bond; and (B) an organic UV absorber having a molecular weight of at least 500 and a weight retentivity of at least 95% when held at 150° C. for 24 hours in an open state, wherein (i) the organic/inorganic composite (A) is obtained through copolymerization of monomeric components comprising (a-1) a vinyl monomer and (a-3) another monomer, wherein said vinyl monomer (a-1) is obtained through condensation or cohydrolytic condensation of a silane compound selected from the group consisting of methacryloxypropyltrimethoxysilane, methacryloxypropylmethyldimethoxysilane, methacryloxypropyldimethylmethoxysilane, methacryloxypropyltriethoxysilane, methacryloxymethyltrimethoxysilane, methacryloxyundecyltrimethoxysilane, acryloxypropyltrimethoxysilane, acryloxypropylmethyldimethoxysilane, acryloxypropyldimethylmethoxysilane, acryloxypropyltriethoxysilane, acryloxymethyltrimethoxysilane, and acryloxyundecyltrimethoxysilane, and an organosilicon compound selected from the group consisting of Si(OCH 3 ) 4 , Si(OCH 2 CH 3 ) 4 , MeO—Si(Me) 2 —O—Si(OMe) 3 and MeO—Si(Me) 2 —O—Si(Me) 2 —O —Si(OMe) 3 wherein Me stands for methyl, said (a-3) another monomer is a combination of (a) a (meth)acrylate or a derivative thereof and (b) a (meth)acrylic monomer having a UV absorbing group and/or a (meth)acrylic monomer having a cyclic hindered amine structure, or (ii) the organic/inorganic composite (A) is obtained through partial hydrolytic condensation of a vinyl polymer and an organosilicon compound, wherein said vinyl polymer is obtained through copolymerization of monomeric components comprising (a-2) a vinyl monomer and (a-3) another monomer, said (a-2) a vinyl monomer is selected from the group consisting of methacryloxypropyltrimethoxysilane, methacryloxypropylmethyldimethoxysilane, methacryloxypropyldimethylmethoxysilane, methacryloxypropyltriethoxysilane, methacryloxymethyltrimethoxysilane, methacryloxyundecyltrimethoxysilane, acryloxypropyltrimethoxysilane, acryloxypropylmethyldimethoxysilane, acryloxypropyldimethylmethoxysilane, acryloxypropyltriethoxysilane, acryloxymethyltrimethoxysilane, and acryloxyundecyltrimethoxysilane, and said (a-3) another monomer is a combination of (a) a (meth)acrylate or a derivative thereof and (b) a (meth)acrylic monomer having a UV absorbing group and/or a (meth)acrylic monomer having a cyclic hindered amine structure, and said organosilicon compound is selected from the group consisting of Si(OCH 3 ) 4 , Si(OCH 2 CH 3 ) 4 , MeO—Si(Me) 2 —O—Si(OMe) 3 and MeO—Si(Me) 2 —O —Si(Me) 2 —O—Si(OMe) 3 wherein Me stands for methyl.