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US5350819A Carbocationic catalysts and process for using said catalysts 失效
羧酸催化剂和使用所述催化剂的方法

Carbocationic catalysts and process for using said catalysts
摘要:
A living carbocationic catalyst composition comprising an initiator of a tertiary alkyl halide, a tertiary aralkyl halide or polymeric halide a co-initiator of an alkyl aluminum or alkyl boron, a proton scavenger and a solvent medium with a dielectric constant between 2.5 and 3.25 is used to produce narrow molecular weight distribution polymers particularly isobutylene polymers.
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