Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Tomomi Sugiyama0
Gerhard Albrecht0
Klaus Lorenz0
Minoru Yaguchi0
Date of Patent
February 16, 2010
Patent Application Number
10534606
Date Filed
November 25, 2002
Patent Primary Examiner
Patent 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.
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