Patent ID: 7070859

Claim:
A laminate comprising a polycarbonate substrate, a first layer formed on the surface of the polycarbonate substrate, and a second layer formed on the surface of the first layer, wherein the first layer is formed by applying an acrylic resin composition comprising components (A) to (E) to the surface of the polycarbonate substrate and curing it, and the second layer is formed by applying an organosiloxane resin composition comprising components (a) to (d) to the surface of the first layer and curing it; the component (A) is an acrylic copolymer which comprises 50 mol % or more of a recurring unit represented by the following formula (A-1): wherein R 1 is a methyl group or ethyl group, 5 to 30 mol % of a recurring unit represented by the following formula (A-4): wherein R 2 is an alkylene group having 2 to 5 carbon atoms, and 0 to 30 mol % of a recurring unit represented by the following formula (A-3): wherein Y is a hydrogen atom or methyl group, R 3 is at least one group selected from the group consisting of hydrogen atom, alkyl group having 2 to 5 carbon atoms and ultraviolet light absorbing residue, with the proviso that a case where Y is a methyl group and R 3 is a methyl group or ethyl group is excluded; the component (B) is a polyisocyanate compound and/or a blocked polyisocyanate compound having an isocyanate group content of 0.7 to 5 equivalents based on 1 equivalent of the hydroxy group of the component (A); the component (C) is a curing catalyst which is contained in an amount of 0 to 0.4 part by weight based on 100 parts by weight of the total of the components (A) and (B); the component (D) is an ultraviolet light absorber which is contained in an amount of 10 to 50 parts by weight based on 100 parts by weight of the total of the component (A) and (B); the component (E) is a silane coupling agent which is contained in an amount of 0 to 5 parts by weight based on 100 parts by weight of the total of the components (A) and (B); the component (a) is colloidal silica; the component (b) is a hydrolysate(s) and/or condensate(s) of alkoxysilanes represented by the following formulas (b-1) to (b-3); Q 1 Si(OQ 3 ) 3 (b-1) Q 1 Q 2 Si(OQ 3 ) 2 (b-2) Si(OQ 3 ) 4 (b-3) wherein Q 1 and Q 2 are each an alkyl group having 1 to 4 carbon atoms, vinyl group or alkyl group having 1 to 3 carbon atoms substituted by at least one group selected from the group consisting of methacryloxy group, amino group, glycidoxy group and 3,4-epoxycyclohexyl group, and Q 3 is an alkyl group having 1 to 4 carbon atoms, the (b-1)/(b-2)/(b-3) molar ratio of the above components being 80-100/0-20/0-20; the component (c) is a curing catalyst; the component (d) is a solvent; and the molar ratio of Si derived from the component (a) to Si derived from the component (b) (Si a /Si b ) is 2/8 to 4/6.