| 摘要 |
PURPOSE:To obtain the composition which is hardly swollen by water and highly developable, without the strength being lowered and with the dimensional change reduced by incorporating a photopolymerizable unsaturated monomer and a photopolymerization initiator into a specified granular copolymer. CONSTITUTION:A monomer mixture contg. 10-95mol% of aliphatic conjugate diene monomer, 0.1-30mol% of alpha,beta-ethylenic saturated carboxylic acid, 0.1-20mol% of a compd. having at least two addition-polymerizable compd., 0.1-30mol% of a monovinyl monomer having amino group and 0-30mol% of another copolymerizable monomer amounting to 100mol% is emulsion- polymerized or suspension-polymerized to obtain a granular copolymer. 5-1000 pts.wt. of the monomer mixture and 0.1-20 pts.wt. of polymerization initiator are incorporated into 100 pts.wt. of the coploymer. When the content of another copolymerizable monomer exceeds 30mol% in the monomer mixture, the water developability of the resin composition may be insufficient. |
