Synthesis and Properties of Hydroxytelechelic Polyisobutylenes by End Capping with <italic style="font-style: italic">tert</italic>-Butyl-dimethyl-(4-methyl-pent-4-enyloxy)-silane

Jing Li; Kang-Da Wu; Huang Shan; Jing-Han Zhang; Ming Zhao; Guang-Bi Gong; Wen-Li Guo; Yi-Bo Wu

doi:10.1007/s10118-019-2327-8

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Synthesis and Properties of Hydroxytelechelic Polyisobutylenes by End Capping with tert-Butyl-dimethyl-(4-methyl-pent-4-enyloxy)-silane

ARTICLE | Updated：2021-02-18

- Synthesis and Properties of Hydroxytelechelic Polyisobutylenes by End Capping with tert-Butyl-dimethyl-(4-methyl-pent-4-enyloxy)-silane
- Chinese Journal of Polymer Science Vol. 37, Issue 9, Pages: 936-942(2019)
- Affiliations：
  
  a.College of Materials Science & Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China
  b.Lanzhou Petrochemical Research Center, Petrochina, Lanzhou 730060, China
  c.Beijing Key Laboratory of Specialty Elastomer Composite Materials, Beijing Institute of Petrochemical Technology, Beijing 102617, China
- Author bio：
  
  zhaoming888@bipt.edu.cn (M.Z.)
  wuyibo@bipt.edu.cn (Y.B.W.)
- Funds：
- DOI：10.1007/s10118-019-2327-8
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Jing Li, Kang-Da Wu, Huang Shan, et al. Synthesis and Properties of Hydroxytelechelic Polyisobutylenes by End Capping with tert-Butyl-dimethyl-(4-methyl-pent-4-enyloxy)-silane. [J]. Chinese Journal of Polymer Science 37(9):936-942(2019)
DOI：

Jing Li, Kang-Da Wu, Huang Shan, et al. Synthesis and Properties of Hydroxytelechelic Polyisobutylenes by End Capping with tert-Butyl-dimethyl-(4-methyl-pent-4-enyloxy)-silane. [J]. Chinese Journal of Polymer Science 37(9):936-942(2019) DOI： 10.1007/s10118-019-2327-8.

摘要

Abstract

The low-activity cationic monomer ,tert,-butyl-dimethyl-(4-methyl-pent-4-enyloxy)-silane was synthesized by Grignard reaction and hydroxyl-protection reaction. Living polyisobutylene chains were initially synthesized by controlled cationic polymerization and then capped with ,tert,-butyl-dimethyl-(4-methyl-pent-4-enyloxy)-silane. The hydrolysis of these polyisobutylenes end capped with ,tert,-butyl-dimethyl-(4-methyl-pent-4-enyloxy)-silane gave rise to hydroxytelechelic polyisobutylene. NMR analysis confirmed that the hydrolysis was complete. Results also showed that a low polymerization temperature favored the participation of ,tert,-butyl-dimethyl-(4-methyl-pent-4-enyloxy)-silane in the end-capping reaction. Moreover, polyisobutylene-based polyurethane exhibited greater acid resistance than commercial polyurethane.

关键词

Keywords

Carbocationic polymerizationPolyisobutyleneHydrolysisPolyisobutylene-based polyurethane

references

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Synthesis and Properties of Hydroxytelechelic Polyisobutylenes by End Capping with tert-Butyl-dimethyl-(4-methyl-pent-4-enyloxy)-silane

DOI：10.1007/s10118-019-2327-8

摘要

Abstract

关键词

Keywords

references