Covulacanizable compositions of fluorelastomers having an improv

Details Covulacanizable compositions of fluorelastomers having an improv Covulacanizable compositions of fluorelastomers having an improv

1990-08-23

1993-01-05

Ziegler, Jacob

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525132, 525149, 525150, 525151, 525193, 525194, 525199, 525254, 525255, 525263, 525293, C08F 830, C08L 2716

Patent

active

051771489

ABSTRACT:
Covulcanizable compositions comprising (A) 55-100% by weight of an elastomeric copolymer of vinylidene fluoride with perfluoropropene optionally tetrafluoroethylene and containing from 0.001 to 2% by weight of bromine; (B) 0-45% by weight of a tetrafluoroethylene and propylene copolymer; (C) 0.7-2.5 parts for 100 parts of mix (A)+(B) of a bisphenol compound; (D) 0.3-1.5 parts for 100 parts of mix (A)+(B) of an organic guaternary compound of ammonium, phosphonium or aminophosphonium; (E) 0.4-5 parts for 100 parts of mix (A)+(B) of an organic peroxide; (F) 1-5% by weight of (A)+(B) of a peroxide cross-linking coagent.

REFERENCES:
patent: 3876654 (1975-04-01), Pattison
patent: 4035565 (1977-07-01), Apothiker et al.
patent: 4530971 (1985-07-01), Geri et al.
"L" reference is the EP. Appl. cited as EP. Appl 84.110707 in the instant specification.
B. E. Smart, "Fluorinated Organic Molecules", Molecular Structure and Energetics, vol. 3, Chapt. 4, p. 143, VCH Pub., Inc., 1986.
Encyclopedia of Polymer Science and Engineering, vol. 7, "Fibers, Optical to Hydrogenation", Fluorocarbon Elastomers, Table 1, p. 258.

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