| 摘要 |
PROBLEM TO BE SOLVED: To provide crosslinked resin fine particles which have such a small particle diameter that they can be suitably used for the purpose of viscosity control and which can be inexpensively produced.SOLUTION: The crosslinked resin fine particles are obtained by reacting, in an organic solvent, a vinyl monomer composition containing 5-50 wt.% of a (meth)acrylamide monomer (A), 5-50 wt.% of a crosslinkable unsaturated monomer (B), and 10-90 wt.% of a (meth)acrylate (C) having a C8-C24 alkyl group, and have a number-average particle diameter of 10-250 nm. |
