Method for the production of phosphorus-containing aromatic polyester
US5399654A · kind A · utility
9Cited by
1References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 21, 1993 |
| Grant date | Mar 21, 1995 |
| Priority date | — |
| Expiry date | Oct 21, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G63/79
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A phosphorus-containing wholly aromatic polyester is produced by an interfacial polymerization method which includes the step of reacting a phosphorus-containing bisphenol compound and a bisphenol compound with dicarboxylic acid chlorides. An organic layer containing the dicarboxylic acid chlorides and phase transfer catalyst is added into an alkaline aqueous layer which contains a bisphenol compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.