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1. 发明授权

US06190451B1 Admixture of cement composition 失效
标题翻译：水泥组合物的外加剂
公开(公告)号：US06190451B1
公开(公告)日：2001-02-20
申请号：US09369149
申请日：1999-08-05
申请人： Sumio Soya , Makoto Saito , Tohru Yamamoto , Yasuhito Wakabayashi
发明人： Sumio Soya , Makoto Saito , Tohru Yamamoto , Yasuhito Wakabayashi
IPC分类号： C04B2404
CPC分类号： C04B24/125 , C04B2103/20
摘要： An additive for an admixture of a cement composition, especially, a retarder of a cement composition, capable of exhibiting excellent retardation effect with a smaller addition amount and easily controlling the retardation time by adjusting the addition amount. An admixture of a cement composition, comprising a cement and at least one iminodiacetic acid or salt thereof represented by formula (I): wherein the M groups each independently represents a hydrogen atom, an alkali metal atom, an ammonium group or a substituted ammonium group; Y represents a divalent alkyl group having from 1 to 5 carbon atoms and the divalent alkyl group may be substituted by a hydroxyl group or a COOM group wherein M represents a hydrogen atom, an alkali metal atom, an ammonium group or a substituted ammonium group; and W represents a hydrogen atom, a hydroxyl group or a COOM group wherein M represents a hydrogen atom, an alkali metal atom, an ammonium group or a substituted ammonium group.
摘要翻译：一种用于混合水泥组合物，特别是水泥组合物的缓凝剂的添加剂，其能够以较小的添加量显示出优异的延迟效果，并且通过调节添加量容易地控制延迟时间。一种水泥组合物的混合物，其包含由式（I）表示的水泥和至少一种亚氨基二乙酸或其盐：其中M基团各自独立地表示氢原子，碱金属原子，铵基或取代的铵基 ; Y表示具有1至5个碳原子的二价烷基，二价烷基可以被羟基或COOM基团取代，其中M表示氢原子，碱金属原子，铵基或取代的铵基; W表示氢原子，羟基或COOM基，其中M表示氢原子，碱金属原子，铵基或取代的铵基。

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