| 摘要 |
<p>What is provided is a composition for cationic polymerization of vinyl ethers without color formation. The composition includes a defined additive comonomer to inhibit the formation of undesired colored materials during polymerization without affecting the properties of the polymer produced. The additive used herein copolymerizes with the vinyl ether to provide spacer molecular units of the additive therein whose presence precludes the formation of long chain conjugation in the copolymer which ordinarily would color the composition. Suitable polymerizable inhibitor additives include cyclic aliphatic epoxides, unsaturated carboxylic acids and their esters, styrene, styrene ethers, styrene oxide, and cycloalkene oxides, in an amount less than 5 % by weight of the composition.</p> |
