Covulcanizable compositions from fluoroelastomers based on vinylidene fluoride and copolymers tetrafluoroethylene-propylene
US4530971A · kind A · utility
16Cited by
4References
1Claims
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Key dates
| Filing date | Sep 6, 1984 |
| Grant date | Jul 23, 1985 |
| Priority date | — |
| Expiry date | Sep 6, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L23/14
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A fluoroelastomer (A) based on vinylidene fluoride (40-83% by moles), perfluoropropene (15-35%) and tetrafluoroethylene (0%-30%) and a diamino compound (B), are mixed with a copolymer (C) containing tetrafluoroethylene (40%-60% by moles) and propylene (60-40%). The thus obtained mixture is covulcanizable with systems based on organic peroxides. In particular mixtures are employed, containing: (A)=42-70% by weight, (B)=1-4%, (C)=51-22%, peroxide 0.4-5%, triallylisocianurate 2-4%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.