Alkoxyamines originating from β-phoshorated nitroxides and use thereof in radical polymerisation
US7772340B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 23, 2003 |
| Grant date | Aug 10, 2010 |
| Priority date | — |
| Expiry date | Apr 16, 2026 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F9/4006
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A subject-matter of the invention is alkoxyamines resulting from β-phosphorated nitroxides corresponding to the formula:in which R represents an alkyl radical having a number of carbon atoms ranging from 1 to 3, R1 represents a hydrogen atom or a residue:in which R3 represents an alkyl radical having a number of carbon atoms ranging from 1 to 20, and R2 represents a hydrogen atom, an alkyl radical having a number of carbon atoms ranging from 1 to 8, a phenyl radical, an alkali metal, such as Li, Na or K, H4N+, Bu4N+ or Bu3HN+, exhibiting a kinetic dissociation constant kd, measured at 120° C. by EPR, of greater than 0.05 s−1. These compounds can be used as initiators for the (co)polymerizations of at least one monomer which can be polymerized by the radical route.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.