| abstract |
(57) [Summary] [PROBLEMS] To provide an antifogging agent composition capable of maintaining initial antifogging property, adhesion, coating film strength, and coating film appearance for a long period of time even in a high temperature environment of 60 to 140 ° C. [Structure] The heat-curable antifogging agent is composed of N-methylol group, N -A monomer having a cross-linking functional group of any one of a methylol ether group and a hydroxyl group, a hydrophilic polymer portion formed of a predetermined hydrophilic monomer, and a sulfonic acid group, a carboxyl group, and a phosphoric acid group. It is composed of a vinyl-type monomer and a hydrophobic polymer portion formed from a copolymerizable lower alkyl (meth) acrylate, and the weight ratio of the hydrophilic polymer portion to the hydrophobic polymer portion is 50/50 to 95. The block or graft copolymer is / 5. Then, lower alkyl (meth) acrylate may be blended in the hydrophilic polymer portion, and the antifogging agent composition may contain a surfactant. |