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. 31, 1998
Filed:
Nov. 21, 1994
Miroslav Chmelir, Krefeld, DE;
Chemische Fabrik Stockhausen GmbH, Krefeld, DE;
Abstract
A process for the production of absorbing agents for water, aqueous solutions and body liquids consisting of at least two components A and B, whereby component A comprises a water-swellable, synthetic polymer or copolymer and component B comprises a natural or synthetic polymeric compound which at normal temperature is a pourable powder and is partially soluble or insoluble in water. Component B is added to component A in dry or partially swollen form during component A's production process after a monomer conversion of at least 30%, preferably at least 60% is attained, and is then mixed with the polymer gel of component A and subsequently dried. The invention further relates to the use of the absorbing agent for the absorption and/or retention of water and/or aqueous solutions, in particular of aqueous body liquids, such as urine or blood, in absorbent expendable products for hygienic, surgical and other medical purposes, such as diapers, tampons, and sanitary napkins; for the absorption and/or retention of water and/or aqueous solutions and subsequent controlled release of water and/or the substances dissolved in the aqueous medium to other bodies, as well as for drying gases and/or liquids, preferably organic liquids and solvents which are not miscible in water.