Telechelic polyisobutylene with chlorine end-groups was made by cationic polymerization of isobutylene in methylene chloride with difunctional initiators (2,5-dimethoxy-2,5-dimethylhexane and 2,5-diacetyl-2,5-dimethylhexane). The structure of these initiators resembles that of polyisobutylene. BCl3 and TiCl4 were used as catalysts. The molecular weight of these telechelics was varied between 600 and 3500 g mol-1, with a molecular-weight distribution ranging from 1.3 to 2.1. The materials were characterized by high-performance liquid chromatography, nuclear magnetic resonance and infra-red spectroscopy.
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机译：具有氯端基的远螯聚异丁烯是通过异丁烯在二氯甲烷中与双官能引发剂（2,5-二甲氧基-2,5-二甲基己烷和2,5-二乙酰基-2,5-二甲基己烷）的阳离子聚合反应制得的。这些引发剂的结构类似于聚异丁烯的结构。 BCl3和TiCl4用作催化剂。这些远螯剂的分子量在600至3500 g mol-1之间变化，分子量分布范围为1.3至2.1。通过高效液相色谱，核磁共振和红外光谱对材料进行了表征。
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