Dispersions containing living radicals
US6841636B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 1, 2003 |
| Grant date | Jan 11, 2005 |
| Priority date | — |
| Expiry date | Aug 1, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S526/922
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to a dispersion of polymer particles, the particle containing, on average, more than 1 living radicals each, the radicals not being chemically protected. The invention is also directed to a free radical polymerization process resulting in a dispersion containing polymer particles having on average one or more living radicals. The process involves carefully regulating the polymerization conditions to produce small size particles under monomer-starved conditions containing, on average, more than one living radical in every particle. These living polymer radicals can be further reacted to form polymers with a controlled architecture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.