SYNTHESIS OF LOW-MOLECULAR-WEIGHT TELECHELIC POLYISOBUTYLENE

POLYMER

卷:34

Article

WALCH, E ; GAYMANS, RJ

关键词: TELECHELIC POLYMERS;    POLYISOBUTYLENE;    2,5-DIMETHOXY-2,5-DIMETHYLHEXANE;    BCL3;    SYNTHESIS;    CHARACTERIZATION;   

DOI  :  10.1016/0032-3861(93)90098-U

来源: Elsevier

【 摘 要 】

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.

【 授权许可】

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