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:
Jul. 19, 2011
Filed:
Feb. 18, 2005
Ulrich Riegel, Landstuhl, DE;
Thomas Daniel, Waldsee, DE;
Matthias Weismantel, Jossgrund-Oberndorf, DE;
Mark Elliott, Ludwigshafen, DE;
Dieter Hermeling, Böhl-Iggelheim, DE;
Ulrich Riegel, Landstuhl, DE;
Thomas Daniel, Waldsee, DE;
Matthias Weismantel, Jossgrund-Oberndorf, DE;
Mark Elliott, Ludwigshafen, DE;
Dieter Hermeling, Böhl-Iggelheim, DE;
BASF Aktiengesellschaft, Ludwigshafen, DE;
Abstract
The invention concerns a process for producing water-absorbing polymer, which comprises a base polymer A being mixed with a first aqueous solution B of at least one surface postcrosslinker and a second aqueous solution C of at least one polyvalent cation and thermally treated, wherein said base polymer A is based on at least 50% neutralized acid-functional monomer and said solutions B and C are metered wholly or partly concurrently through separate nozzles whereby a water-absorbing polymer having a high saline flow conductivity value is obtained.