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:
Jun. 14, 2016
Filed:
Nov. 23, 2012
Applicant:
Ticona Gmbh, Sulzbach (Taunus), DE;
Inventors:
Michael Haubs, Bad Kreuznach, DE;
Jurgen Lingnau, Mainz-Laubenheim, DE;
Klaus Kurz, Kelsterbach, DE;
Assignee:
Ticona GmbH, Sulzbach (Taunus), DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 323/06 (2006.01); C08G 65/16 (2006.01); C07D 323/04 (2006.01);
U.S. Cl.
CPC ...
C07D 323/06 (2013.01); C07D 323/04 (2013.01); C08G 65/16 (2013.01);
Abstract
A process for recycling polyoxymethylene polymers is disclosed. A polyoxymethylene polymer is at least partially dissolved in an aprotic compound. The resulting solution or suspension (liquid mixture) is then contacted with a catalyst which causes the polyoxymethylene polymer to be converted into a cyclic acetal. The cyclic acetal can be separated, collected and used in other processes. In one embodiment, the cyclic acetal may be used to produce a polyoxymethylene polymer.