Process for producing polyarylate
US6417291B1 · kind B1 · utility
23Cited by
2References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2000 |
| Grant date | Jul 9, 2002 |
| Priority date | — |
| Expiry date | Dec 19, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G63/916
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
In a process for producing a polyarylate through the polycondensation of an aromatic dihydroxy compound and an aromatic ester bond forming precursor, a salicylic acid ester compound having a specific structure is used as a terminal modifying agent.In a process for producing a polyarylate through the polycondensation of an aromatic dihydroxy compound and an ester bond forming aromatic dicarboxylic acid derivative, a polyarylate of high-molecular weight having excellent color tone and hue stability is obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.