COATING RESIN COMPOSITION FOR INNER SURFACE OF THREE PIECE CAN, AND COATED METAL PLATE FOR INNER SURFACE OF THREE PIECE CAN COATED THEREWITH

摘要

PROBLEM TO BE SOLVED: To obtain a coating for inner surfaces of a three piece can such as the can for a food, containing no poisonous compound, releasing no poisonous material, containing no endocrine disrupter, satisfying processability, resistance to retorting treatment, and resistance to the contents, and excellent in resistance to deterioration of the processability with time, and resistance to over-baking. ;SOLUTION: This resin composition for the coating material for the inner surfaces of the three piece can comprises (A) a polyester resin composed of polycarboxylic acid components in which 75-100 mol% is terephthalic acid, and 0-25 mol% is other polycarboxylic acids, and polyalcohol components in which 50-100 mol% is one or more kinds of polyalcohols having a side chain, represented by formula I (n is 0 or 1; R1 is H, methyl or ethyl; R2 is H or a ≥1C alkyl; R3 is H or a ≥1C alkyl; with the proviso that at least one of the R1, R2 and R3 is an alkyl), and 0-50 mol% is other alcohol components, and (B) a cross-linking agent. The coated metal plate for the inner surfaces of the three piece can is obtained by coating the resin composition.;COPYRIGHT: (C)2001,JPO