Patent · US Active

Process and apparatus for preparing biodegradable polyesters

US11427677B2 · kind B2 · utility

0Cited by

3References

10Claims

0Family size

Assignee

Technip Zimmer GMBH · DE

Inventors

Michael Reisen · Frankfurt am Main, DE
Rainer Linke · Gummersbach, DE
Eckhard Seidel · Frankfurt, DE
Reza Sarbandi · Frankfurt am Main, DE

Key dates

Filing date	Jul 6, 2017
Grant date	Aug 30, 2022
Priority date	—
Expiry date	Dec 7, 2037

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01J2219/00162
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

There is described a process for preparing a biodegradable polyester from an aromatic dicarboxylic acid, an aliphatic dicarboxylic acid and a diol where in a first reaction step the aromatic acid is esterified with the diol, and in a second reaction step the aliphatic acid is added to the reaction mixture. Furthermore, there is described an apparatus for carrying out this process.

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