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。