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:
Jun. 03, 2003
Filed:
Aug. 09, 2001
Theo Mayer, Julbach, DE;
Werner Bauer, Winhöring, DE;
Harald Zeh, Burghausen, DE;
Bernd Kayser, Burghausen, DE;
Andreas Bacher, Burghausen, DE;
Ulf Dietrich, Altötting, DE;
Wacker-Chemie GmbH, Munich, DE;
Abstract
The invention relates to thickeners based on fully or partially hydrolyzed vinyl alcohol copolymers with a molecular weight Mw greater than 100,000, obtainable by hydrolyzing vinyl acetate copolymers which, besides vinyl acetate units, also contain comonomer units which derive from one or more comonomers selected from the group consisting of 1-(C )-alkylvinyl esters of C carboxylic acids, allyl esters, vinyl esters of alpha-branched C carboxylic acids, and C -alkyl (meth)acrylates, in the form of their aqueous solution or in powder form.