Sobute New Materials Co., Ltd

Nanjing Bote New Materials Co., Ltd.

Cheng Yu

Jiaping Liu

Qianping Ran

Xin Shu

Yong Yang

Jinzhi Liu

Yanwei Wang

Han Yan

Xiumei Wang

The present invention discloses a multitype-adsorptive-group polycarboxylic acid water-reducing agent, consisting of 30-60 wt % of a macromolecule with multitype-adsorptive groups and water, the macromolecule with multitype-adsorptive groups has a polyethylene glycol side chain, and adsorption groups of the polymer backbone include a carboxylic acid group, a sulfonic acid group and a phosphoric acid group, the phosphoric acid group being linked to the backbone of the macromolecule with multitype-adsorptive groups by nucleophilic addition. The water-reducing agent of the present invention has significantly improved adaptability to different cements and aggregates while maintaining a high water reduction efficiency, compared with the conventional polycarboxylic acid water-reducing agent agent. It has a good water reducing efficiency in many different grades of cement, as well as a better resistance to aggregates containing more impurities such as machine-made sand.

Multitype-adsorptive-group polycarboxylic acid water-reducing agent, method for preparing the same and use thereof

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Jiangsu, China

Cheng Yu