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:
Dec. 06, 2022
Filed:
Jun. 21, 2022
Jiangsu Arit New Materials Co., Ltd., Nanjing, CN;
Chengdu Arit Times New Material Co., Ltd., Chengdu, CN;
Shanshan Qian, Nanjing, CN;
Xu Zhao, Nanjing, CN;
Jinying Peng, Nanjing, CN;
Tong Lu, Nanjing, CN;
Xuechuan Wang, Nanjing, CN;
Haojie Qu, Nanjing, CN;
Pengcheng Yu, Nanjing, CN;
Chunyang Zheng, Nanjing, CN;
Jiangsu ARIT New Materials CO., LTD., Nanjing, CN;
Chengdu ARIT Times New Material Co., Ltd., Chengdu, CN;
Abstract
The present invention discloses a multi-arm polycarboxylate water reducer and a preparation method thereof, the preparation method includes the following steps: making a phenolic hydroxyl containing rigid compound and p-nitrobenzonitrile subjected to a nucleophilic substitution reaction in a solvent, then subjected to addition with a sodium azide in a solvent and water mixed solution to obtain a tetrazole derivative; making an unsaturated polyether macromonomer subjected to terminal halogenation and react with the prepared tetrazole derivative to obtain a tetrazole-containing multi-arm unsaturated polyether macromonomer; and subjecting the tetrazole-containing multi-arm unsaturated polyether macromonomer, an unsaturated carboxylic acid small monomer and an unsaturated polyether macromonomer to a free radical polymerization reaction under combined action of an initiator, a reducing agent and a molecular weight regulator to obtain the multi-arm polycarboxylate water reducer integrating shrinkage reducing and antibacterial functions.