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AssigneeKao Corporation
InventorsKyoichi Shirota, Masaaki Shimoda, Yoshiaki Tanisho, Yoshikazu Morii, Masayoshi Ehara, Toshimasa Hamai, Daisuke Hamada
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The invention provides an additive for hydraulic compositions, which exhibits an excellent viscosity reducing effect on a hydraulic composition, for example, a hydraulic composition containing a slurry of water and hydraulic powder, and is excellent in operativeness when used as an aqueous solution. The additive for hydraulic compositions contains a phosphoric monoester having a specific group such as an alkyl ether group or a salt thereof (monoester) and a phosphoric diester having a specific group such as an alkyl ether group or a salt thereof (diester) in a monoester weight content of monoester/(monoester+diester) is 0.4 to 0.95 (diester includes a pyrodiester).
An additive for hydraulic compositions comprising a phosphoric monoester having a group represented by general formula (1) below or a salt thereof (referred to hereinafter as the monoester) and a phosphoric diester (including a pyrophosphoric diester) having a group represented by the general formula (1) below or a salt thereof (referred to hereinafter as the diester):
Dependencies are inferred from the claim text.