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:
Dec. 29, 2009
Filed:
May. 07, 2004
Tomotaka Nishikawa, Osaka, JP;
Toru Uno, Yokohama, JP;
Hirokazu Yamamoto, Kanagawa, JP;
Yukiko Nishikawa, Kanagawa, JP;
Hiromichi Tanaka, Kanagawa, JP;
Tomiyasu Ueta, Osaka, JP;
Tomotaka Nishikawa, Osaka, JP;
Toru Uno, Yokohama, JP;
Hirokazu Yamamoto, Kanagawa, JP;
Yukiko Nishikawa, Kanagawa, JP;
Hiromichi Tanaka, Kanagawa, JP;
Tomiyasu Ueta, Osaka, JP;
Nippon Shokubai Co., Ltd., Osaka-shi, JP;
Abstract
The polycarboxylic acid concrete admixture of the present invention exhibits properties such as decreasing the concrete viscosity, improving the slump-retaining ability, and suppressing bleeding water, and is improved in the ability to cement compositions or the like. The above-mentioned polycarboxylic acid concrete admixture comprises a polycarboxylic acid polymer containing a polyalkylene glycol in the side chain, wherein the polycarboxylic acid polymer is obtained by polymerizing monomer components containing an alkyl (meth)acrylate monomer and a specific polyalkylene glycol unsaturated monomer and unsaturated carboxylic acid (salt) monomer, and it has a specific weight average molecular weight.