| abstract |
(57) [Summary] [Structure] General formula (1) [In the formula, R 1 is a hydrogen atom or a hydroxyl group, R 2 and R 3 are a hydrogen atom, a methyl group, a carboxyl group, respectively. (Here, R 4 is a hydrogen atom or a 3,4,5-trihydroxybenzoyl group, and R 5 is a hydrogen atom, a hydroxyl group or 3, Which shows a 4,5-trihydroxybenzoyloxy group]]. [Effect] By using this hydrophilic treatment agent, the hydrophilicity of the solid surface is improved, so that stains such as glass, metal, pottery, and fibers can be easily removed, and stains can be prevented from being redeposited. To be |