申请人:Sobute New Materials Co., Ltd.
公开号:EP3398982A1
公开(公告)日:2018-11-07
The present invention provides a method for preparing a polymer and a use of the polymer. The resulting polymer is used as a dispersant for an aqueous dispersion of a hydraulic binder and/or a latent hydraulic binder, such that water-reducing rate is improved, and suitable control of air content can be achieved, thereby improving the strength of concrete. The method for preparing a polymer includes polycondensation of a polyether macromonomer A of a specific structure, a monomer B and an aldehyde C to obtain the polymer. The monomer B is phenylsulfonic acid, p-/o-aminophenylsulfonic acid, p-/o-hydroxylbenzoic acid, p-/o-aminobenzoic acid, p-/o-hydroxylphenylsulfonic acid, or a phosphoric acid group or phosphorous acid group-containing monomer of a specific structure. A molar ratio of the polyether macromonomer A and the monomer B is 1 : (0.5 to 12).
本发明提供了一种制备聚合物的方法及其用途。所得聚合物可用作水性粘结剂和/或潜在水性粘结剂水分散体的分散剂,从而提高减水率,适当控制含气量,进而提高混凝土强度。制备聚合物的方法包括将特定结构的聚醚大单体 A、单体 B 和醛 C 缩聚得到聚合物。单体 B 是苯磺酸、对/邻氨基苯磺酸、对/邻羟基苯甲酸、对/邻氨基苯甲酸、对/邻羟基苯磺酸或特定结构的含磷酸基团或含磷酸基团的单体。聚醚大单体 A 和单体 B 的摩尔比为 1 : (0.5 至 12)。