Vulcanizable compositions based on elastomeric copolymers of...

Details Vulcanizable compositions based on elastomeric copolymers of... Vulcanizable compositions based on elastomeric copolymers of...

C - Chemistry, Metallurgy

08

J

402/404, 402/534

C08J 3/24 (2006.01) C08F 214/18 (2006.01) C08K 13/02 (2006.01)

Patent

CA 1049687

ABSTRACT OF THE DISCLOSURE Vulcanizable compositions of vinylidene fluoride copolymer elastomers, a process for the vulcanization thereof, and vulcaniza- tes 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 vul- canization 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 chem- ical agents. They are particularly useful in applications such as sealing gaskets requiring strong adhesion to metallic surfaces even under severe temperature conditions.

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