Poly(arylene ether)from 9,9-bis(3,5-diphenyl-4-hydroxyphenyl)fluorene
US5219978A · kind A · utility
2Cited by
1References
7Claims
0Family size
Inventors
Key dates
| Filing date | Feb 21, 1992 |
| Grant date | Jun 15, 1993 |
| Priority date | — |
| Expiry date | Feb 21, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2603/18
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
9,9-Bis(3,5-diphenyl-4-hydroxyphenyl)fluorene a novel compound can be used to produce amorphous poly(arylene ethers) which have high glass transition temperatures and good thermo-oxidative stability and which are soluble in aromatic and chlorinated solvents; the novel fluorene derivative is produced by transalkylation of 9,9-bis(4-hydroxyphenyl)fluorene or 9,9-bis(4-methoxyphenyl)fluorene with 2,6-diphenylphenol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.