Covulcanizable compositions from fluoroelastomers based on vinyl

Details Covulcanizable compositions from fluoroelastomers based on vinyl Covulcanizable compositions from fluoroelastomers based on vinyl

1984-09-06

1985-07-23

Seccuro, Carman J.

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

Synthetic resins

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

525194, 525193, C08L 2722, C08L 2716, C08L 2718, C08L 2720

Patent

active

045309710

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%.

REFERENCES:
patent: 3723577 (1973-03-01), Stivers
patent: 3769371 (1973-10-01), Versasian
patent: 4028431 (1977-06-01), Futami et al.
patent: 4200568 (1980-04-01), Trautvetter et al.

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