The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 10, 2007
Filed:
Sep. 27, 2005
Stefan Deiss, Harxheim, DE;
Michael Reisen, Frankfurt am Main, DE;
Karl-heinz Heldmann, Raunheim, DE;
Eckhard Seidel, Frankfurt am Main, DE;
Stefan Deiss, Harxheim, DE;
Michael Reisen, Frankfurt am Main, DE;
Karl-Heinz Heldmann, Raunheim, DE;
Eckhard Seidel, Frankfurt am Main, DE;
Zimmer Aktiengesellschaft, Frankfurt am Main, DE;
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.