Block copolymers of formula (I) are new. R1 = 1-22C alkyl, perfluoroalkyl or dialkylaminoalkyl, but not tert.-butyl; R2 = -(CH2)n- (with n = 2-6); R3 = residue of known chain regulator contg. no active H atoms; X = cation; and n,m = at least 3 (mean value). Also claimed are block copolymers of formula (I) with X = tert.-butyl. Also claimed is a process for the prodn. of (I).
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机译：式（I）的嵌段共聚物是新的。 R 1 ＝ 1-22C烷基，全氟烷基或二烷基氨基烷基，但不包括叔丁基; R 2 ＝-（CH 2）n-（n ＝ 2-6）; R 3 ＝已知链调节剂的残基续。没有活性氢原子; X =阳离子; n，m =至少3（平均值）。还要求保护的是具有X ＝叔丁基的式（I）的嵌段共聚物。还要求保护一种产品的方法。 （I）。
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