Vulcanizable compositions based on elastomeric copolymers of vinylidene fluoride, process for vulcanization thereof utilizing phosphorous metal coordination complex and vulcanized compositions obtained thereby
US4062830A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 2, 1975 |
| Grant date | Dec 13, 1977 |
| Priority date | — |
| Expiry date | Jun 2, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/49
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Vulcanizable compositions of vinylidene fluoride copolymer elastomers, a process for the vulcanization thereof, and vulcanizates produced thereby. The vulcanizable compositions comprise, in addition to the elastomeric fluoride copolymer, an inorganic acid acceptor, a basic compound, a polyhydroxy or polythiol vulcanizing agent, and a phosphorus complex compound additive. The presence of the phosphorus complex additive facilitates satisfactory vulcanization rates without scorching. The vulcanized fluorinated elastomers produced therefrom may be used as gaskets for sealing purposes and as protective layers in contact with corrosive chemical agents. They are particularly useful in applications such as sealing gaskets requiring strong adhesion to metallic surfaces even under severe temperature conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.