申请人:BASF SE
公开号:US10906012B2
公开(公告)日:2021-02-02
Process for making membranes M comprising the following steps: a) providing a dope solution D comprising at least one polymer P and at least one solvent S, b) adding at least one coagulant C to said dope solution D to coagulate said at least one polymer P from said dope solution D to obtain a membrane M, wherein said at least one solvent S comprises more than 50% by weight of at least one compound according to formula (I) (I), wherein R1 and R2 are independently C1 to C20 alkyl, R3 is selected from H or an aliphatic rest, 20 R4 is selected from H or an aliphatic rest, AO represents at least one alkylene oxide, n is a number from 0 to 100.
制造膜 M 的工艺,包括以下步骤:a) 提供包含至少一种聚合物 P 和至少一种溶剂 S 的配料溶液 D, b) 向所述配料溶液 D 中添加至少一种凝固剂 C,以从所述配料溶液 D 中凝固所述至少一种聚合物 P,从而获得膜 M、其中,所述至少一种溶剂 S 包含至少一种按式 (I) (I) 计的化合物,其重量百分比超过 50%,其中 R1 和 R2 独立地为 C1 至 C20 烷基,R3 选自 H 或脂肪族余基,20 R4 选自 H 或脂肪族余基,AO 代表至少一种环氧亚烷基,n 为 0 至 100 的数字。