Invention Grant
US07304104B2 Cement admixture, cement composition and method for laying work the same, and method for producing cement hardened product
失效
水泥外加剂，水泥组合物和铺设工序的方法以及生产水泥硬化产品的方法
- Patent Title: Cement admixture, cement composition and method for laying work the same, and method for producing cement hardened product
- Patent Title (中): 水泥外加剂，水泥组合物和铺设工序的方法以及生产水泥硬化产品的方法
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Application No.: US10791729Application Date: 2004-03-04
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Publication No.: US07304104B2Publication Date: 2007-12-04
- Inventor: Akihiko Yamashita , Hiromichi Tanaka , Toru Uno , Yoshiyuki Onda , Tsuyoshi Hirata
- Applicant: Akihiko Yamashita , Hiromichi Tanaka , Toru Uno , Yoshiyuki Onda , Tsuyoshi Hirata
- Applicant Address: JP Osaka
- Assignee: Nippon Shokubai Co. Ltd.
- Current Assignee: Nippon Shokubai Co. Ltd.
- Current Assignee Address: JP Osaka
- Agency: Connolly Bove Lodge and Hutz
- Priority: JP2003-058191 20030305; JP2003-058369 20030305; JP2003-087753 20030327
- Main IPC: C04B24/26
- IPC: C04B24/26 ; C08K5/06
Abstract:
The cement admixture of the present invention can provide viscosity decreasing ability as well as a high dispersing ability and slump loss preventing ability even in a high water reducing ratio range. The above-mentioned cement admixture comprises three components of a copolymer (A) containing a constituent unit (I) derived from the unsaturated (poly)alkylene glycol ether monomer (a) and a constituent unit (II) derived from a maleic acid monomer (b), a specific unsaturated (poly)alkylene glycol ether monomer (a) and a non-polymerizable (poly)alkylene glycol (B) having no alkenyl group.
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