Living and quasiliving cationic telechelic polymers quenched by N-substituted pyrrole and methods for their preparation
US6969744B2 · kind B2 · utility
26Cited by
32References
12Claims
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Key dates
| Filing date | Jun 19, 2003 |
| Grant date | Nov 29, 2005 |
| Priority date | — |
| Expiry date | Sep 14, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2030/04
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Disclosed is a method of preparing terminally functionalized telechelic polymers using a cationic living polymer product or a terminal tert-chloride chain end of a carbocationic quasiliving polymer product, which comprises quenching the polymer product with an N-substituted pyrrole to thereby functionalize the N-substituted pyrrole at the terminal reactive polymer chain end(s). Also disclosed are the terminal functionalized polyisobuyl N-substituted pyrrole compounds where the polyisobutyl group is substituted at the 2 and 3 position of the N-substituted pyrrole.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.