Polymerization in the presence of a .beta.-substituted nitroxide radical
US6255448A · kind A · utility
44Cited by
2References
43Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 22, 1997 |
| Grant date | Jul 3, 2001 |
| Priority date | — |
| Expiry date | May 22, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F293/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention relates to a process for the polymerization or copolymerization of at least one monomer which is polymerizable by the radical route in the presence of a stable free radical from the nitroxide family. The stable free radical is .beta.-substituted and provides excellent control of polydispersity while ensuring a better rate of polymerization or copolymerization, if they are compared with the stable free radicals used in the prior art.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.