Fluorine-containing elastomer composition

Details Fluorine-containing elastomer composition Fluorine-containing elastomer composition

1997-04-04

1999-02-23

Lipman, Bernard

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

Synthetic resins

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

5253263, 525374, 525378, 525379, 526253, C08F 830

Patent

active

058745068

ABSTRACT:
A fluorine-containing elastomer comprising vinylidene fluoride, tetrafluoroethylene and hexafluoropropylene having a high fluorine content (e.g. at least 68% by weight) can be vulcanized with a polyol-based cross-linking agent by further copolymerizing 2H-pentafluoropropylene into the elastomer, whereby the resulting vulcanization products having improved characteristics such as rheological properties, normal state physical properties and compression set can be obtained. Vulcanization products obtained by vulcanization with a polyol-based cross-linking agent and a quaternary onium salt compound have a good permeation resistance to fuel oil as a result of a permeation test with a mixed solvent of gasoline/methanol in a volume ratio of 85/15.

REFERENCES:
patent: 3884877 (1975-05-01), Kolb
patent: 3931121 (1976-01-01), Davis et al.
patent: 3960822 (1976-06-01), Davis et al.
patent: 4287320 (1981-09-01), Kolb
patent: 4506054 (1985-03-01), Vasta

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