发明授权
US4959426A Epoxy resins prepared by co-curing fluorinated epoxy prepolymers and non-fluorinated epoxy prepolymers 失效
通过共混固化氟化环氧预聚物和非氟化环氧预聚物制备的环氧树脂

Epoxy resins prepared by co-curing fluorinated epoxy prepolymers and
non-fluorinated epoxy prepolymers
摘要:
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.
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