The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 28, 2024
Filed:
Apr. 18, 2019
Sobute New Materials Co., Ltd., Jiangsu, CN;
Nanjing Bote New Materials Co., Ltd., Jiangsu, CN;
Jiaping Liu, Jiangsu, CN;
Han Yan, Jiangsu, CN;
Yong Yang, Jiangsu, CN;
Jinzhi Liu, Jiangsu, CN;
Xin Shu, Jiangsu, CN;
Xiumei Wang, Jiangsu, CN;
Yanwei Wang, Jiangsu, CN;
Cheng Yu, Jiangsu, CN;
Qianping Ran, Jiangsu, CN;
SOBUTE NEW MATERIALS CO., LTD., Jiangsu, CN;
NANJING BOTE NEW MATERIALS CO., LTD., Jiangsu, CN;
Abstract
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.