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:
Feb. 16, 2010
Filed:
Nov. 25, 2002
Klaus Lorenz, Trostberg, DE;
Minoru Yaguchi, Fujisawa, JP;
Tomomi Sugiyama, Chigasaki, JP;
Gerhard Albrecht, Tacherting, DE;
Klaus Lorenz, Trostberg, DE;
Minoru Yaguchi, Fujisawa, JP;
Tomomi Sugiyama, Chigasaki, JP;
Gerhard Albrecht, Tacherting, DE;
Construction Research & Technology GmbH, Trostberg, DE;
Abstract
A defoaming agent for cementitious compositions is provided, which has an excellent defoaming performance and does not segregate when mixed with a high performance AE water-reducing agent to form a single admixture or when diluted in water at the desired concentration, and which has excellent long term storage properties. The defoaming agent for cementitious compositions is obtained by mixing at least a polyethylene oxide derivative and a nonionic defoaming agent wherein the polyethylene oxide derivative has at one end a hydrophobic group with a branched structure and/or an unsaturated bond and at the other end an anionic group.