Aromatic polyesters
US4440920A · kind A · utility
10Cited by
3References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 10, 1982 |
| Grant date | Apr 3, 1984 |
| Priority date | — |
| Expiry date | Dec 10, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G63/193
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Aromatic polyesters are obtained by copolycondensing isophthalic acid and terephthalic acid or derivatives thereof with bis(hydroxyphenyl) sulfone and 2,2-bis(4'-hydroxyphenyl)propane. These aromatic polyesters have excellent molding workability. From these polyesters, colorless, transparent moldings can be obtained by compression, extrusion or injection molding methods. The products thus obtained have excellent mechanical and electrical properties and improved heat resistance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.