Patent · US Expired

Method for the continuous production of high-molecular polyester and device for carrying out the method

US7115701B2 · kind B2 · utility

11Cited by

11References

37Claims

0Family size

Assignee

Inventa-Fischer GmbH & Co. KG · DE

Inventors

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

Key dates

Filing date	Nov 11, 2002
Grant date	Oct 3, 2006
Priority date	—
Expiry date	Mar 17, 2023

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 polyester such as polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polynaphthalene terephthalate (PEN), polytrimethylene terephthalate (PTT) and/or polyester of other dicarboxylic acids and diols, including the copolymers of the same. The invention also relates to a device for carrying out said method, the device being a single-stage tower reactor by which means a method involving only two reactors is carried out for the entire process.

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