发明授权
US07393886B2 Cement dispersant and concrete composition containing the dispersant
失效
水泥分散剂和含有分散剂的混凝土组合物
- 专利标题: Cement dispersant and concrete composition containing the dispersant
- 专利标题(中): 水泥分散剂和含有分散剂的混凝土组合物
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申请号: US10556071申请日: 2004-06-25
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公开(公告)号: US07393886B2公开(公告)日: 2008-07-01
- 发明人: Hirofumi Bandoh , Wernher M. Danzinger , Jun Imamura , Kaname Saitoh , Tetsu Tomoyose , Atsushi Kobayashi , Akira Ikeda , Seiichi Koshisaka
- 申请人: Hirofumi Bandoh , Wernher M. Danzinger , Jun Imamura , Kaname Saitoh , Tetsu Tomoyose , Atsushi Kobayashi , Akira Ikeda , Seiichi Koshisaka
- 申请人地址: JP Kanagawa JP Tokyo
- 专利权人: Sika Ltd.,Toho Chemical Industry Co., Ltd.
- 当前专利权人: Sika Ltd.,Toho Chemical Industry Co., Ltd.
- 当前专利权人地址: JP Kanagawa JP Tokyo
- 代理机构: Oliff & Berridge, PLC
- 国际申请: PCT/JP2004/009031 WO 20040625
- 国际公布: WO2006/011182 WO 20060202
- 主分类号: C08K3/00
- IPC分类号: C08K3/00
摘要:
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.