Vulcanizable compositions based on elastomeric copolymers of vin

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

1975-06-02

1977-12-13

Schofer, Joseph L.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 795C, 526 18, 526 27, C08K 549, C08F 1422, C08L 2332

Patent

active

040628302

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.

REFERENCES:
patent: 3655727 (1972-04-01), Patel et al.
patent: 3712877 (1973-01-01), Patel et al.
patent: 3884877 (1975-05-01), Kolb
patent: 3904591 (1975-09-01), Fischer
Rubber Chem. & Tech. - 1973 - pp. 619-652.

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