Controlled radical copolymerization of fluorinated monomers by xanthate or trithiocarbonate
US9184461B2 · kind B2 · utility
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6Claims
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Key dates
| Filing date | Nov 30, 2012 |
| Grant date | Nov 10, 2015 |
| Priority date | — |
| Expiry date | Mar 28, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention relates to a method of preparing a fluorinated copolymer, comprising a step of copolymerization of a fluorinated monomer (of the vinylidene fluoride type) with an α-trifluoromethacrylic acid monomer or derivative of α-trifluoromethacrylic acid, in the presence of a xanthate or trithiocarbonate compound. The invention also relates to copolymers obtained by this method as well as block copolymers comprising a copolymer block prepared according to this method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.