Anionic polymerization diinitiator and process for preparing same
US7285596B2 · kind B2 · utility
3Cited by
13References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 22, 2004 |
| Grant date | Oct 23, 2007 |
| Priority date | — |
| Expiry date | Sep 22, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F1/02
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Disclosed is an anionic diinitiator prepared using a diisopropenyl benzene compound and an organo lithium compound having primary polymerization sites. The anionic diinitiators are prepared by admixing a diisopropenyl benzene compound with diethyl ether, ethylene, an organo lithium compound, and a solvent under reaction conditions sufficient to prepare a diinitiator having primary lithium alkyl reactive sites. The diinitiators are particularly useful in preparing block copolymers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.