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:
May. 17, 2011
Filed:
Dec. 21, 2006
Michael Haubs, Bad Kreuznach, DE;
Joachim Clauss, Darmstadt-Eberstadt, DE;
Michael Hoffmockel, Niedernhausen, DE;
Jürgen Lingnau, Malnz, DE;
Arnold Schneller, Messel, DE;
Michael Haubs, Bad Kreuznach, DE;
Joachim Clauss, Darmstadt-Eberstadt, DE;
Michael Hoffmockel, Niedernhausen, DE;
Jürgen Lingnau, Malnz, DE;
Arnold Schneller, Messel, DE;
Ticona GmbH, Keisterbach, DE;
Abstract
A process and an apparatus are described for preparation of oxymethylene polymers. This process encompasses polymerization, in a homogeneous phase, of a monomer which forms oxymethylene groups, as far as 90% of maximum conversion in the presence of an acetal of formaldehyde and of an initiator for cationic polymerization, followed by deactivation of the reaction mixture. The resultant oxymethylene polymers have alkyl ether end groups and are extremely stable.