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EP0002218A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Process for the preparation of aromatic polyesters

Assignee: Bayer AG
•
Filing: 1978-11-18
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Granted: —
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Expires: 1998-11-18
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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

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-08 12:00
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/68; C08G63/688; C08G63/02; C08G63/12; C08G63/16; C08G63/18; C08G63/19; C08G63/64; C08L; C08L67/00; C08L67/02; C08L67/03

Claims Analysis

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References Cited (Backward Citations)

GB924607A Cited
DE1745695A1 Cited
DE2749062A1 Cited

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