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:
Dec. 20, 2011
Filed:
Jun. 17, 2009
Applicants:
Rüdiger Funk, Niedernhausen, DE;
Matthias Weismantel, Jossgrund-Oberndorf, DE;
Leigh R. Blair, Greenwood Springs, MS (US);
Kevin D. Heitzhaus, Suffolk, VA (US);
Inventors:
Rüdiger Funk, Niedernhausen, DE;
Matthias Weismantel, Jossgrund-Oberndorf, DE;
Leigh R. Blair, Greenwood Springs, MS (US);
Kevin D. Heitzhaus, Suffolk, VA (US);
Assignee:
BASF SE, Ludwigshafen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 18/62 (2006.01); C08F 20/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
A process for continuously producing water-absorbing polymer particles, comprising polymerization, drying, grinding, classification and at least partial recycling of the undersize obtained in the classification, wherein the polymer gel obtained by the polymerization is withdrawn from the polymerization reactor and mixed with the recycled undersize.