Method of preparing allyl-terminated polyisobutylene
US4758631A · kind A · utility
41Cited by
7References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 16, 1986 |
| Grant date | Jul 19, 1988 |
| Priority date | — |
| Expiry date | Oct 16, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F2810/40
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention relates to a method of preparing allyl-terminated polyisobutylene (PIB) by allylation with allyltrimethylsilane of tertiary chloro-capped PIB by electrophilic substitution. The synthesis begins with the BCl.sub.3, catalyzed mono- or oligo-tertiary chloride "inifer" initiated polymerization of isobutylene, followed in the same reaction vessel by the addition of hexane, allyltrimethylsilane, and TiCl.sub.4.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.