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:
Sep. 16, 2008
Filed:
Aug. 13, 2003
Alexander Kraus, Tacherting, DE;
Christian Hübsch, Gmund, DE;
Gerhard Albrecht, Tacherting, DE;
Harald Grassl, Schönau, DE;
Angelika Hartl, Tacherting, DE;
Stefanie Scheul, Trostberg, DE;
Alfred Kern, Kirchweidach, DE;
Alexander Kraus, Tacherting, DE;
Christian Hübsch, Gmund, DE;
Gerhard Albrecht, Tacherting, DE;
Harald Grassl, Schönau, DE;
Angelika Hartl, Tacherting, DE;
Stefanie Scheul, Trostberg, DE;
Alfred Kern, Kirchweidach, DE;
Goldschmidt GmbH, , DE;
Abstract
The use of block copolymers which were prepared by polymerization of a poly(alkylene oxide) compound (A) with at least one ethylenically unsaturated monomer compound (B), as dispersants for aqueous suspensions of solids, in particular based on hydraulic binders, such as, for example, cement, lime, gypsum or anhydrite, is described. Surprisingly, these block copolymers have a substantially better water-reducing power at the same dose in comparison with conventional superplasticizers based on comb polymers. Moreover, the slump loss can also be reduced in comparison with conventional superplasticizers by modification of the adhesive block.