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:
Jul. 01, 2008
Filed:
Jun. 25, 2004
Hirofumi Bandoh, Chigasaki, JP;
Wernher M. Danzinger, Hiratsuka, JP;
Jun Imamura, Hiratsuka, JP;
Kaname Saitoh, Yokohama, JP;
Tetsu Tomoyose, Chigasaki, JP;
Atsushi Kobayashi, Hiratsuka, JP;
Akira Ikeda, Funabashi, JP;
Seiichi Koshisaka, Ichihara, JP;
Hirofumi Bandoh, Chigasaki, JP;
Wernher M. Danzinger, Hiratsuka, JP;
Jun Imamura, Hiratsuka, JP;
Kaname Saitoh, Yokohama, JP;
Tetsu Tomoyose, Chigasaki, JP;
Atsushi Kobayashi, Hiratsuka, JP;
Akira Ikeda, Funabashi, JP;
Seiichi Koshisaka, Ichihara, JP;
Sika Ltd., Kanagawa, JP;
Toho Chemical Industry Co., Ltd., Tokyo, JP;
Abstract
A superior cement dispersant and a concrete composition containing the cement dispersant, the cement dispersant being a water-soluble amphoteric copolymer which contains an alkylene oxide adduct of a polyamide polyamine having an unsaturated group and at least two types of polyalkylene glycol ester. When the cement dispersant is compounded with a concrete composition, the dispersion performance thereof increases with time, and the concrete viscosity is effectively decreased. The cement dispersant composition contains a water-soluble amphoteric copolymer or the neutralized salt thereof as an essential component, which is obtained by copolymerizing an alkylene oxide adduct of a polyamide polyamine having an unsaturated group, (meta)acrylic acid or an alkali metal, ammonium, or alkanolamine salt thereof, an ester of an alkylene glycol and methacrylic acid, and an ester of an alkylene glycol and acrylic acid. In addition, the concrete composition containing the above cement dispersant is also disclosed.