| abstract |
According to the present invention, crosslinkable fine particles which can be suitably used for metals, in particular aluminum and alloys thereof, and can form a hydrophilic coating having excellent hydrophilicity, particularly hydrophilic persistence after adhesion of contaminants, and excellent adhesion. It provides a hydrophilic treatment agent.n n n The present invention is the following formula (1);n n n (One)n n n (In the formula, R 1 represents a hydrogen or a methyl group. R 2 is CH 2 or C 2 H 4 represents a.) A monomer (a) 30~95% by weight of the polyoxyalkylene chain and a polymerizable double bond represented by the The crosslinkable microparticles | fine-particles obtained by copolymerizing the monomer component which consists of 5 to 60% weight% of the monomer (b) which has a C, and 0 to 50 weight% of other polymerizable monomers (c) are copolymerized. |