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    Cement composition having chromium reducer
    5.
    发明授权
    Cement composition having chromium reducer 有权
    具有铬还原剂的水泥组合物

    公开(公告)号：US07232483B2

    公开(公告)日：2007-06-19

    申请号：US11388435

    申请日：2006-03-24

    申请人： Leslie A. Jardine ,  Charles R. Cornman ,  Vijay Gupta ,  Byong-Wa Chun

    发明人： Leslie A. Jardine ,  Charles R. Cornman ,  Vijay Gupta ,  Byong-Wa Chun

    IPC分类号： C04B22/12

    CPC分类号： C04B40/0039 ,  C04B22/142

    摘要： Exemplary compositions and methods for reducing hexavalent chromium in cementitious compositions involve the use of a liquid additive composition, comprising stannous chloride. Along with the stannous chloride may be used at least one co-additive comprising an antioxidant, oxygen scavenger, or mixture thereof, and/or at least one agent comprising a cement grinding aid, cement quality improver, or mixture thereof.

    摘要翻译： 在水泥质组合物中用于还原六价铬的示例性组合物和方法包括使用包含氯化亚锡的液体添加剂组合物。 随着氯化亚锡可以使用至少一种包含抗氧化剂，除氧剂或其混合物的共添加剂，和/或至少一种包含水泥助磨剂，水泥质量改进剂或其混合物的试剂。

    Admixture for optimizing addition of EO/PO plasticizers
    7.
    发明授权
    Admixture for optimizing addition of EO/PO plasticizers 有权
    用于优化添加EO / PO增塑剂的外加剂

    公开(公告)号：US06670415B2

    公开(公告)日：2003-12-30

    申请号：US09993726

    申请日：2001-11-06

    申请人： Leslie A. Jardine ,  Hideo Koyata ,  Kevin J. Folliard ,  Chia-Chih Ou ,  Felek Jachimowicz ,  Byong-Wa Chun ,  Ara A Jeknavorian ,  Christon L. Hill

    发明人： Leslie A. Jardine ,  Hideo Koyata ,  Kevin J. Folliard ,  Chia-Chih Ou ,  Felek Jachimowicz ,  Byong-Wa Chun ,  Ara A Jeknavorian ,  Christon L. Hill

    IPC分类号： C08K334

    CPC分类号： C04B24/425 ,  C04B14/104 ,  C04B14/106 ,  C04B28/02 ,  C04B40/0039 ,  C04B22/16 ,  C04B24/2647 ,  C04B24/32 ,  C04B2103/408 ,  C04B2103/32 ,  C04B2103/006 ,  C04B20/023 ,  C04B20/1018 ,  C04B20/10 ,  C04B24/2658 ,  C04B24/00 ,  C04B22/08 ,  C04B20/1055 ,  C04B20/1037 ,  C04B24/121

    摘要： In the preparation of aqueous cement compositions containing a plasticizer, such as an EO/PO polymer-containing plasticizer, or EO/PO comb polymer-containing plasticizer, and further containing clay, such as a smectite clay, which expands when in contact with water, the step of providing an agent operative to modify the clay whereby the plasticizer absorbing capability of the clay is reduced. In exemplary methods of the invention, the plasticizer is an EO/PO (e.g., oxyalkylene) plasticizer and preferably an EO/PO comb polymer, and the clay-activity-modifying agent may comprise an inorganic cation, an organic cation, a polar organic molecule capable of being absorbed by the clay, a clay dispersant (such as a polyphosphate), or a mixture thereof. For clay-activity-modifying agents which comprise a cation or a polar organic molecule, the agent is preferably added to the clay before water is introduced to the clay. For clay dispersant agents and some organic cations such as quaternary amines (which have a strong affinity for cationic exchange with the clay), the agent may be added before, during, or after water is introduced to the clay.

    摘要翻译： 在含有增塑剂的水性水泥组合物的制备中，例如含有EO / PO聚合物的增塑剂或含EO / PO梳型聚合物的增塑剂，并且还包含与水接触时膨胀的粘土，例如蒙脱石粘土 提供可以改变粘土的试剂的步骤，从而降低粘土的增塑剂吸收能力。 在本发明的示例性方法中，增塑剂是EO / PO（例如，氧化烯）增塑剂，优选EO / PO梳状聚合物，并且粘土 - 活性改性剂可以包含无机阳离子，有机阳离子，极性有机物 能够被粘土吸收的分子，粘土分散剂（例如多磷酸盐）或其混合物。 对于包含阳离子或极性有机分子的粘土活性改性剂，优选在将水引入粘土之前将试剂加入到粘土中。 对于粘土分散剂和一些有机阳离子如季胺（其与粘土与阳离子交换具有很强的亲和力），可以在将水引入粘土之前，之中或之后加入该试剂。