Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
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.
De Giorgi Marco
Re Alberto
Ausimont S.r.l.
Jacobs Lewis T.
Sellers II Robert E. L.
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