US Patent 7572864 Pulverulent, cross-linked polymers capable of absorbing aqueous liquids

Patent 7572864 was granted and assigned to Stockhausen (Sondershausen) on August, 2009 by the United States Patent and Trademark Office.

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Patent

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Current Assignee

Stockhausen (Sondershausen)

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

75728640

Patent Inventor Names

Richard Mertens0

Harren Jōrg0

Date of Patent

August 11, 2009

Patent Application Number

118660910

Date Filed

October 2, 2007

Patent Primary Examiner

‌

Kelechi C. Egwim

Patent abstract

The invention relates to absorbent, cross-linked polymers based on partially neutralized, monoethylenically unsaturated monomers that bear acidic groups. Said polymers exhibit improved properties with regard to their ability to transport liquids in a swollen state. The surface of the polymers is postreticulated, using a combination of an organic cross-linking compound, excluding polyols, and a cation that is in salt form in an aqueous solution.

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