Fluorine-containing novolak resin and derivative thereof
US4877859A · kind A · utility
8Cited by
3References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 21, 1988 |
| Grant date | Oct 31, 1989 |
| Priority date | — |
| Expiry date | Mar 21, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G59/3254
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention provides a fluroine-containing novolak resin or its derivative having a repeating unit of the formula ##STR1## wherein R.sup.1 is hydrogen atom, OH or ##STR2## R.sup.2 is hydrogen atom or alkyl group having 1 to 4 carbon atoms, X is fluorine-containing monovalent organic group having 2 to 20 carbon atoms. The present invention also provides a perfluoroalkenyloxphenol or its derivative of the formula ##STR3## wherein R.sup.10 is OH or ##STR4## R.sup.11 is H, OH, alkyl group having 1 to 4 carbon atoms or ##STR5## Y is perfluoroalkenyl group having 6 to 14 carbon atoms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.