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. 08, 2011
Filed:
May. 17, 2006
Lars Einfeldt, Jena, DE;
Alexander Kraus, Evenhausen, DE;
Gerhard Albrecht, Tacherting, DE;
Martina Brandl, Traunstein, DE;
Angelika Hartl, Tacherting, DE;
Lars Einfeldt, Jena, DE;
Alexander Kraus, Evenhausen, DE;
Gerhard Albrecht, Tacherting, DE;
Martina Brandl, Traunstein, DE;
Angelika Hartl, Tacherting, DE;
Construction Research & Technology GmbH, Trostberg, DE;
Abstract
The invention relates to copolymers based on phosphorous-containing monomers (A) and on macromonomers (B), to methods for the production thereof and to their use as additives for inorganic binding agent suspensions based on cement, lime, gypsum and anhydrite. The corresponding polymeric additives have, as flow agents, excellent water-reducing properties and hold the flowability of the concrete over a relatively long period of time (60 to 90 min.) to an almost unchanged level without having delayed action. In addition, the corresponding polymeric additives improve the processing and setting processes of the building materials produced with these additives by making possible earlier and higher resistances to pressure.