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. 06, 2014
Filed:
May. 05, 2009
Applicants:
Thorben Schuetz, Seeheim-Jugenheim, DE;
Joachim Knebel, Alsbach-Haehnlein, DE;
Mario Gomez Andreu, Pfungstadt, DE;
Inventors:
Thorben Schuetz, Seeheim-Jugenheim, DE;
Joachim Knebel, Alsbach-Haehnlein, DE;
Mario Gomez Andreu, Pfungstadt, DE;
Assignee:
Evonik Röhm GmbH, Darmstadt, DE;
Primary Examiner:
Int. Cl.
CPC ...
C08G 65/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to a process for preparing polyalkylene glycol di(meth)acrylates by reacting polyalkylene glycol with (meth)acrylic anhydride, wherein the reaction mixture contains at most 0.5% by weight of metal compounds and/or amines, the reaction is carried out in the presence of polymerization inhibitors and the reaction temperature is at least 60° C.