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:
Mar. 15, 2011
Filed:
Jul. 13, 2006
Marko Blinzler, Mannheim, DE;
Knut Zöllner, Mannheim, DE;
Claudius Schwittay, Heidelberg, DE;
Jens Assmann, Mannheim, DE;
Marko Blinzler, Mannheim, DE;
Knut Zöllner, Mannheim, DE;
Claudius Schwittay, Heidelberg, DE;
Jens Assmann, Mannheim, DE;
BASF AG, Ludwigshafen, DE;
Abstract
Process for preparing polyoxymethylene copolymers (POMs) by a) polymerizing a reaction mixture comprising suitable main monomers and comonomers and also a polymerization initiator and, if appropriate, a regulator, b) adding a deactivator and c) removing the residual monomers, wherein the amount of compounds whose melting point at 1013 hPa is below 60° C. present in the reaction mixture at any point in time during the process is not more than 0.1% by weight, with the POM, the monomers, comonomers, polymerization initiators, deactivators and regulators not being included in the calculation.