Patent ID: 6562903
Filing Date: 2003-05-13
Classification: B05D,C08L,C09D

Abstract:
A clear coating for top coating of automobileswhich comprises a half-esterified acid group-containing acrylic copolymer (I) and a silicate-grafted acrylic copolymer (II) as resin constituents, said half-esterified acid group-containing acrylic copolymer (I) being obtainable by: preparing a copolymer from an acid anhydride group-containing, radical-polymerizable monomer (I-a) and another radical-polymerizable monomer (I-b) and then half-esterifying said acid anhydride group with a low-molecular alcohol compound, said silicate-grafted copolymer (II) being obtainable by grafting a silicate compound (II-B) onto a hydrolyzable silyl-containing copolymer (II-A), said silicate compound (II-B) being represented by the general formula (1): wherein n represents an integer of 1 to 50 and the R1 groups may represent different groups and each represents a substituted or unsubstituted organic group containing 1 to 20 carbon atoms, andthe amount of said silicate compound (ii-b) grafted being 5 to 50% by mass (on solids basis) relative to the total amount of said resin constituents.