STABLE PCE AND POLYSACCHARIDE VMA COMPOSITIONS FOR CONCRETE ADMIXTURES AND THEIR USES
    5.
    发明申请
    STABLE PCE AND POLYSACCHARIDE VMA COMPOSITIONS FOR CONCRETE ADMIXTURES AND THEIR USES 审中-公开
    稳定的PCE和多糖VMA组合物的混合物及其用途

    公开(公告)号:WO2015148946A1

    公开(公告)日:2015-10-01

    申请号:PCT/US2015/023034

    申请日:2015-03-27

    Abstract: The present invention provides aqueous compositions that are stable after at least a 24 hour period comprising a polysaccharide viscosity modifying additive and more than 60 wt.%, based on the weight ot total solids in the compositions of one or more polycarboxylate ether, the compositions comprising an acid chosen from an organic acid having 1 hydroxy group or less, a strong acid containing a single hydrogen, an ascorbic acid, and mixtures thereof, the compositions having a pH of less than the pH of the polycarboxylate ether itself, or from 1.0 to 6.0. The present invention enables stable concentrates of aqueous polycarboxylate ethers and polysachharide viscosity modifying agents for use in hydraulic binder applications, the compositions having a total solids content of 10 wt.% to as high as 65 wt.%.

    Abstract translation: 本发明提供含水组合物,其在包含多糖粘度调节添加剂的至少24小时内是稳定的,并且大于60重量%,基于组合物中一个或多个聚羧酸酯醚的总固体的重量,组合物包含 选自具有1个羟基或更少的有机酸的酸,含有单个氢的强酸,抗坏血酸及其混合物,所述组合物的pH值小于聚羧酸酯醚本身的pH,或从1.0至 6.0。 本发明使得用于水硬性粘合剂应用中的聚羧酸酯水溶性多糖和多糖溶剂粘度改进剂的稳定浓缩物,该组合物具有10重量%至高达65重量%的总固体含量。

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