| 摘要 |
<p>Fine acrylic polymer particles composed of primary particles (P) of a core-shell structure having an average particle diameter of 250 nm or larger. The fine particles comprise a core polymer (C) which is a copolymer of the following monomer mixture (Mc) and a shell polymer (S) which is a copolymer of the following monomer mixture (Ms), the weight ratio of the Mc/Ms being 10/90 to 90/10. Mc: methyl methacrylate 20 to 85 mol%, (meth)acrylic ester of C2-8 alcohol 15 to 80 mol%, other copolymerizable monomer up to 30 mol%, Ms: methyl methacrylate 20 to 79.5 mol%, (meth)acrylic ester of C2-8 alcohol 5 to 40 mol%, carboxylated or sulfonated monomer 0.5 to 10 mol%, other copolymerizable monomer up to 30 mol%.</p> |
