| 摘要 |
<p>What is described herein is a precipitation polymerization process and copolymer products produced thereby. Polymerization is carried out in a reaction mixture of a vinyl lactam, e.g. vinyl pyrrolidone or vinyl caprolactam, and a polymerizable carboxylic acid, e.g. acrylic acid or methacrylic acid, in the presence of a polymerization initiator, in an aliphatic hydrocarbon solvent, particularly, a C3-C10 saturated hydrocarbon, which is branched or unbranched, cyclic or acyclic and preferably, is heptane or cyclohexane.</p> |
