Heterocycle containing control agents for living-type free radical polymerization
US6395850B1 · kind B1 · utility
21Cited by
4References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 22, 2001 |
| Grant date | May 28, 2002 |
| Priority date | — |
| Expiry date | May 22, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F2/38
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Control agents that have a nitrogen—nitrogen bond in a cyclic ring covalently bonded to a thiocarbonyl moiety are provided for living-type free radical polymerization without a bimodal molecular weight distribution at high monomer conversions. These control agents provide superior properties for the production of block polymers having narrow molecular weight distributions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.