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:
May. 17, 2005
Filed:
Mar. 21, 2002
Lars Einfeldt, Jena, DE;
Gerhard Albrecht, Tacherting, DE;
Alfred Kern, Kirchweidach, DE;
Matilde Calado Vieira, Messines, PT;
Dieter Klemm, Weimar, DE;
Lars Einfeldt, Jena, DE;
Gerhard Albrecht, Tacherting, DE;
Alfred Kern, Kirchweidach, DE;
Matilde Calado Vieira, Messines, PT;
Dieter Klemm, Weimar, DE;
Degussa Construction Chemicals GmbH, Trostberg, DE;
Abstract
The invention concerns the use of water-soluble polysaccharide derivatives as dispersing agents for mineral binder suspensions. A partially hydrolyzed cellulose containing carboxyl groups and optionally hydroxyalkyl and/or sulfate groups and/or a partially hydrolyzed amylose-rich starch which also has sulfoalkyl groups with 1 to 4 carbon atoms is used as the polysaccharide derivative. These polysaccharide derivatives have a low viscosity and an excellent plasticizing effect in mineral binder suspensions, especially in those based on cement, lime and/or gypsum.