Patent · US Expired

Method for continuous production of high-molecular weight polyesters and device for implementation of the method

US7259227B2 · kind B2 · utility

5Cited by

0References

20Claims

0Family size

Assignee

UHDE INVENTA-FISCHER GMBH · DE

Inventors

Eike Schulz Van Endert · Berlin, DE
Rainer Hagen · Leverkusen, DE
Thomas Hille · Neuwied, DE
Christian Atlas · Berlin, DE
Ulrich Thiele · Bruchköbel, DE

Key dates

Filing date	Mar 13, 2006
Grant date	Aug 21, 2007
Priority date	—
Expiry date	Mar 13, 2026

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01J2219/00166
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The invention relates to a method for producing high-molecular weight polyesters, such as e.g. polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polynaphthalene terephthalate (PEN), polytrimethylene terephthalate (PTT) and/or polyesters of other dicarboxylic acids and diols including copolymers thereof. The invention relates likewise to a device for implementing this method. The latter concerns a single-stage tower reactor with which a method, comprising only two reactors, is made available for the total process.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.