Process for the preparation of aromatic polyesters
Abstract
Abstract Translated from German Hochmolekulare Polyester mit guter Verarbeitbarkeit, hoher Glasübergangstemperatur, mechanischer Festigkeit und klarer Transparenz erhält man reproduzierbar durch Umesterung und Polykondensation von Bisphenolen mit Diarylterephthalaten und/oder Diarylisophthalaten in Gegenwart aromatischer Polycarbonate mit einem Molekulargewicht von 600 bis 15.000. High-molecular polyesters with good processability, high glass transition temperature, mechanical strength and clear transparency can be obtained reproducibly by transesterification and polycondensation of bisphenols with diaryl terephthalates and / or diaryl isophthalates in the presence of aromatic polycarbonates with a molecular weight of 600 to 15,000.
Inventors
- 👤 Harald Dr. Medem
- 👤 Dieter Dr. Freitag
- 👤 Klaus Dr. Reinking
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.