Cross-linking of thermosetting resins by means of heating with saturated perfluoropolyether vapor in the presence of a secondary fluid
US4977222A · kind A · utility
4Cited by
2References
4Claims
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Assignee
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Key dates
| Filing date | Mar 11, 1988 |
| Grant date | Dec 11, 1990 |
| Priority date | — |
| Expiry date | Mar 11, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J3/247
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The cross-linking or curing of thermosetting resins and of hot curable elastomers is carried out by heating the material or the article comprising the resin (or the elastomer) by saturated vapor of the commercial perfluoropolyether having an average boiling point corresponding to the temperature necessary for the cross-linking and having a point range not exceeding 12.degree. C. (measured according to ASTM D 1078) in the presence of a chlorofluorohydrocarbon secondary vapor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.