Copolymers of ethylenically unsaturated ethers useful as hydraulic cement superplasticizers
    1.
    发明公开
    Copolymers of ethylenically unsaturated ethers useful as hydraulic cement superplasticizers 失效
    Copolymere vonäthylenischungesättigtenEthern verwendbar als hydraulischer Zementsuperweichmacher。

    公开(公告)号:EP0537870A1

    公开(公告)日:1993-04-21

    申请号:EP92250293.5

    申请日:1992-10-12

    IPC分类号: C08F220/04 C04B24/26

    摘要: In the present invention copolymers of certain ethers and olefinic mono- acids (or salts or in some cases esters thereof) have been discovered to be effective superplasticizers for hydraulic cements. When admixed into wet cement compositions these polymeric compounds give the cement mixture higher slump and lower slumploss over time. Alternatively, the copolymers of this invention may be used in preparing a cement mixture requiring less water, to yield a hardened cement with greater compressive strength.

    摘要翻译: 在本发明中,已经发现某些醚和烯属单酸(或其盐或在某些情况下为酯)的共聚物是水硬性水泥的有效的超增塑剂。 当混入湿式水泥组合物中时,这些聚合化合物会使水泥混合物的坍落度更高,并随着时间的推移降低坍落度。 或者,本发明的共聚物可用于制备需要较少水的水泥混合物,以产生具有更大抗压强度的硬化水泥。

    Corrosion inhibiting hydraulic cement additives and compositions containing same
    4.
    发明公开
    Corrosion inhibiting hydraulic cement additives and compositions containing same 失效
    Korrosionsinhibitierende Zementzusatzstoffe und diese enthaltende Zusammensetzungen。

    公开(公告)号:EP0537872A1

    公开(公告)日:1993-04-21

    申请号:EP92250295.0

    申请日:1992-10-12

    摘要: An additive for hydraulic cement compositions is provided which advantageously provides corrosion inhibition and set acceleration, in combination with a high level of fluidity and retention of fluidity over a desired period of time. The cement additive comprises an accelerator selected from the group consisting of alkali or alkaline earth metal nitrates, alkali or alkaline earth metal nitrites, and mixtures thereof, and a plasticizer comprising copolymers of an ether comonomer and an ethylenically-unsaturated comonomer.
    Fluid hydraulic cement compositions and a method of preparing them are further provided comprising these additive combinations.

    摘要翻译: 提供了一种用于水硬性水泥组合物的添加剂,其有利地提供腐蚀抑制和凝固加速度,并结合高水平的流动性和在期望的时间段内保持流动性。 水泥添加剂包括选自碱金属或碱土金属硝酸盐,碱金属或碱土金属亚硝酸盐及其混合物的促进剂,以及包含醚共聚单体和烯属不饱和共聚单体的共聚物的增塑剂。 还提供流体水硬性水泥组合物及其制备方法,包括这些添加剂组合。