| 摘要 |
<p>1285265 N-vinyl pyrrolidone copolymers L'OREAL 8 May 1970 [9 May 1969] 11417/71 Divided out of 1285264 Heading C3P A copolymer of 40 to 90% N-vinyl pyrrolidone, 5 to 40% of vinyl laurate or stearate, and 5 to 20% of crotonic acid, vinyl acetic acid, allyl acetic acid or allyloxyacetic acid may be obtained by copolymerization in the presence of free-radical catalysts. The copolymers may be neutralized.</p> |
