公开(公告)号：US20040122144A1

公开(公告)日：2004-06-24

申请号：US10683366

申请日：2003-10-10

申请人： W.R. GRACE & CO.-CONN.

发明人： Milind V. Karkare ,  Chia-Chih Ou ,  Craig T. Walloch ,  Ara A. Jeknavorian

IPC分类号： C08K005/09

CPC分类号： C04B24/2658 ,  C04B24/08 ,  C04B40/0039 ,  C04B2111/00646 ,  C04B2111/27 ,  C08K5/098 ,  C04B2103/304 ,  C08L33/14

摘要： Admixture or additive which provides water-repellency and flexural bond strength improvement in mortar, concrete, or cement, and particularly in masonry mortars. An exemplary admixture composition includes: (a) at least one C8-C30 fatty acid or a derivative thereof, such as a salt, ester, or triglyceride; and (b) a flexural bond strength enhancing material comprising a polymer having a backbone to which are attached carboxyl cement anchoring groups and oxyalkylene groups attached by linkages selected from the group consisting of an amide, an imide, and an ester. A preferred additive optionally includes an air entraining admixture for improving workability of a masonry mortar into which the fatty acid or derivative and the flexural bond strength enhancing material are added. A cementitious composition and method for enhancing water-repellency and flexural bond strength in a masonry mortar are also disclosed.

摘要翻译： 在砂浆，混凝土或水泥，特别是砖石砂浆中提供防水和抗弯强度改善的外加剂或添加剂。 示例性的混合物组合物包括：（a）至少一种C 8 -C 30脂肪酸或其衍生物，例如盐，酯或甘油三酸酯; 和（b）抗弯强度增强材料，其包含具有主链的聚合物，所述聚合物具有通过选自酰胺，酰亚胺和酯的键连接的羧基水泥锚定基团和氧化烯基团。 优选的添加剂任选地包括用于提高添加了脂肪酸或衍生物和抗弯强度增强材料的砖石砂浆的加工性的加气混合物。 还公开了一种在砖石砂浆中增强防水性和弯曲粘合强度的水泥组合物和方法。

公开(公告)号：US20020121229A1

公开(公告)日：2002-09-05

申请号：US09993726

申请日：2001-11-06

申请人： W.R. GRACE & CO.-CONN.

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： C04B016/08 ,  C04B038/00 ,  C04B014/12

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 polymerontaining 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（例如含EO / PO聚合物的增塑剂）或含EO / PO梳型聚合物的增塑剂的水性水泥组合物的制备中，并且还含有当与水接触时膨胀的粘土（例如蒙脱石粘土）， 提供可操作地改性粘土的试剂的步骤，由此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。