PIB 4 is obtained by polymerization of an isobutene rich stream with specific catalysts. Product is composed predominantly of aliphatic mono-olefins. PIB 4 is a non-toxic polymer.

PIB 4通过富异丁烯流与特定催化剂的聚合而获得。产品主要由脂族单烯烃组成。 PIB 4是一种无毒聚合物。