Epoxy resins prepared by co-curing fluorinated epoxy prepolymers and non-fluorinated epoxy prepolymers
US4959426A · kind A · utility
14Cited by
6References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 3, 1988 |
| Grant date | Sep 25, 1990 |
| Priority date | — |
| Expiry date | Nov 3, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G59/38
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.