Patent · US Expired

Method for the manufacture of polyesters

US7241855B2 · kind B2 · utility

1Cited by

1References

18Claims

0Family size

Assignee

Zimmer, Inc. · US

Inventors

Stefan Deiss · Harxheim, DE
Michael Reisen · Frankfurt am Main, DE
Karl-Heinz Heldmann · Raunheim, DE
Eckhard Seidel · Frankfurt, DE

Key dates

Filing date	Sep 27, 2005
Grant date	Jul 10, 2007
Priority date	—
Expiry date	Sep 27, 2025

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G63/181
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A method is described for the manufacture of polyesters of aromatic dicarboxylic acids with aliphatic and/or cycloaliphatic dials, in which an aromatic dicarboxylic acid in the presence of a monocarboxylic acid or a mixture of a monocarboxylic acid present in a saturated solution with water or another suitable solvent is converted with an aliphatic or cycloaliphatic dial to a dicarboxylic acid alkanediolestercarboxylate and/or its oligomers, which are polycondensed in further process steps to the polyester.

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