Epoxy resins prepared by co-curing fluorinated epoxy prepolymers

Details Epoxy resins prepared by co-curing fluorinated epoxy prepolymers Epoxy resins prepared by co-curing fluorinated epoxy prepolymers

1988-11-03

1990-09-25

Jacobs, Lewis T.

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

Synthetic resins

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

525481, 525486, 525488, C08L 6302, C08L 6304, C08L 6306

Patent

active

049594265

ABSTRACT:
A non-fluorinated epoxy prepolymer of known type is mixed with a fluorinated epoxy prepolymer containing perfluoropolyether blocks or perfluoroalkylene blocks of type --(CF.sub.2 CF.sub.2).sub.n -- and/or of type ##STR1## and the two prepolymers are co-cured by treating the mixture with cross-linking agents of known type suitable for epoxy resins, thereby obtaining a cross-linked epoxy resin having a fluorine content.ltoreq.30% by weight, preferably.ltoreq.25% by weight.

REFERENCES:
patent: 3852222 (1974-12-01), Field et al.
patent: 3872045 (1975-03-01), Field et al.
patent: 4132681 (1979-01-01), Field et al.
patent: 4306053 (1981-12-01), Harrison et al.
patent: 4699969 (1987-10-01), Re et al.
patent: 4833227 (1989-05-01), Re et al.

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