Method for partial or total oxidation of one or several thiocarbonylthio ends of a polymer obtained by radical polymerisation controlled by reversible addition-fragmentation
US7473740B2 · kind B2 · utility
4Cited by
1References
22Claims
0Family size
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Key dates
| Filing date | Oct 21, 2004 |
| Grant date | Jan 6, 2009 |
| Priority date | — |
| Expiry date | Aug 7, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F2438/03
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to a method for partial or total oxidation of one or several thiocarbonylthio ends of a polymer, obtained by radical polymerisation controlled by reversible addition-cleavage with thiocarbonylthio agents, Said method comprising the step of contacting said polymer with an ozone-containing gas, during which ozone reacts with the one or several thiocarbonylthio ends.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.