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:
Nov. 03, 2015
Filed:
Dec. 22, 2010
Changwen Miao, Nanjing, CN;
Min Qiao, Nanjing, CN;
Qianping Ran, Nanjing, CN;
Jianping Liu, Nanjing, CN;
Dongliang Zhou, Nanjing, CN;
Yong Yang, Nanjing, CN;
Yonglin Mao, Nanjing, CN;
Changwen Miao, Nanjing, CN;
Min Qiao, Nanjing, CN;
Qianping Ran, Nanjing, CN;
Jianping Liu, Nanjing, CN;
Dongliang Zhou, Nanjing, CN;
Yong Yang, Nanjing, CN;
Yonglin Mao, Nanjing, CN;
SOBUTE NEW MATERIALS CO., LTD., Nanjing, CN;
Abstract
The present invention provides a preparation method of hyperbranched polycarboxylic acid type copolymer cement dispersant, including: Monomer A, B and C undergo a free radical copolymerization in an aqueous medium. The molar ratio of Monomer A, Monomer B and Monomer C conforms to B/A−A−2−10 and C/(A+B−C)−0.02−0.08. Monomer A is expressed by General Formula (1), where, Ris H or a methyl; X═O, CHO, CHCHO; m is an integer from 5 to 200. Monomer B is expressed by General Formula (2), where, Ris H or COOM; Ris H or CHand M is H, Na, K or NH; Monomer C is expressed by General Formula (3), where, Ris H or methyl; X═O, CHO, CHCHO; Y═CH, CHCH, CH(CH), CHCHCH, CH(CH)CH, C(CH)and n is an integer from 5 to 200.