公开(公告)号：US3726934A

公开(公告)日：1973-04-10

申请号：US3726934D

申请日：1971-12-20

Applicant: MONSANTO CO

Inventor： STRAZIK W ,  PERRY E

IPC: C07C7/144 ,  C07C15/46 ,  C07C15/10

CPC classification number: B01D61/362 ,  B01D71/42 ,  C07C7/144 ,  C07C15/00

Abstract: Styrene is separated from organic mixtures comprising styrene and ethyl benzene by contacting the mixture against one side of a polymeric membrane and withdrawing at the other side a vaporous mixture having increased styrene concentration. The polymer membrane is an acrylonitrile-containing polymer or acrylonitrilecontaining polymer blend. Exemplary of the polymer membranes are copolymers of acrylonitrile and acrylic acid, 2-methyl-5vinylpyridine, isobutylene, isoprene, and styrene and blends of polyacrylonitrile and poly(ethylenimine).

Abstract translation: 将苯乙烯与包含苯乙烯和乙基苯的有机混合物通过将混合物与聚合物膜的一侧接触并在另一侧将具有增加的苯乙烯浓度的蒸汽混合物抽出。 聚合物膜是含丙烯腈的聚合物或含丙烯腈的聚合物共混物。 聚合物膜的示例是丙烯腈和丙烯酸的共聚物，2-甲基-5-乙烯基吡啶，异丁烯，异戊二烯和苯乙烯以及聚丙烯腈和聚（亚乙基亚胺）的共混物。