Synthesis of block polymers obtained by controlled free radical polymerization
US6890980B2 · kind B2 · utility
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24Claims
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Key dates
| Filing date | Nov 6, 2001 |
| Grant date | May 10, 2005 |
| Priority date | — |
| Expiry date | Nov 6, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F2/38
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention concerns a method for preparing a first generation polymer comprising a step which consists in free radical polymerization of a composition comprising: at least an ethylenically unsaturated monomer, a source of free radicals, and at least a cyclic organic compound including at least a tetrathiophosphate group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.