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. 15, 2012
Filed:
Jan. 27, 2010
Applicants:
Gerhard Albrecht, Tacherting, DE;
Max Oppliger, Allschwil, CH;
Qiwei Yang, Erlenbach, CH;
Hubertus Matthias Zink, Trostberg, DE;
Inventors:
Gerhard Albrecht, Tacherting, DE;
Max Oppliger, Allschwil, CH;
Qiwei Yang, Erlenbach, CH;
Hubertus Matthias Zink, Trostberg, DE;
Assignee:
Construction Research & Technology GmbH, Trostberg, DE;
Primary Examiner:
Int. Cl.
CPC ...
C04B 24/04 (2006.01); C04B 24/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
A fluidizing admixture for use with sprayable cementitious compostions, the admixture consists of 2-phosphonobutane-1,2,4-tricarboxylic acid and at least one selected polymer derived from ethylenically-unsaturated mono- or dicarboxylic acids. Citric acid may optionally be present. The admixture has good fluidizing properties and outstanding shelf-life.