Fluorinated elastomeric materials

Details Fluorinated elastomeric materials Fluorinated elastomeric materials

1989-05-25

1990-02-13

Schofer, Joseph L.

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

Synthetic resins

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

522185, 5253264, 525356, C08F 822

Patent

active

049007939

ABSTRACT:
This invention relates to a method of making perfluorinated elastomeric materials, and to materials made by such methods. In the full synthetic scheme, a partially fluorinated polymeric compound, with moieties to prevent crystallization, is created. It is then crosslinked to a desired degree, then perfluorinated.
Various intermediate materials, such as partially fluorinated crosslinked polymers, have useful properties, and are or may become commercially available. One embodiment of this invention therefore relates to perfluorination of a selected partially fluorinated, crosslinked material, which is one step of the full synthetic scheme.

REFERENCES:
patent: 2497046 (1950-02-01), Kropa
patent: 2700661 (1955-01-01), Miller
patent: 2968649 (1961-01-01), Pailthorp et al.
patent: 3051677 (1962-08-01), Rexford
patent: 3639510 (1972-02-01), Paine
patent: 3655727 (1972-04-01), Patel et al.
patent: 4675380 (1987-06-01), Buckmaster et al.

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