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. 13, 2007
Filed:
Nov. 08, 2001
Wolfgang Schrof, Neuleiningen, DE;
Udo Gödert, Ebertsheim, DE;
Martin Beck, Maxdorf, DE;
Hans-joachim Hähnle, Neustadt, DE;
Gunnar Schornick, Neuleiningen, DE;
Wolfgang Schrof, Neuleiningen, DE;
Udo Gödert, Ebertsheim, DE;
Martin Beck, Maxdorf, DE;
Hans-Joachim Hähnle, Neustadt, DE;
Gunnar Schornick, Neuleiningen, DE;
BASF Aktiengesellschaft, Ludwigshafen, DE;
Abstract
Disclosed is a method for determining the swellability and the swelling kinetics of superabsorbent material () such as polymer gels, for example, which comprises introducing a defined volume of the dry superabsorbent material () into a measuring vessel (), using a movable element () within said measuring vessel () to apply a restraining force () to said superabsorbent material () and capturing the expansion of said superabsorbent material () contactlessly within a chamber () in a continuous manner by capturing the change in height of a piston () which bounds said chamber (), travels in a measuring vessel () and is marked with a height scale ().