Title:
PREPARATION METHOD FOR CROSSLINKED VISCOSITY-REDUCING POLYCARBOXYLIC ACID WATER REDUCER
Document Type and Number:
WIPO Patent Application WO/2020/048083
Kind Code:
A1
Abstract:
A preparation method for a crosslinked viscosity-reducing polycarboxylic acid water reducer, comprising the following steps: (1) preparing an esterified monomer; (2) performing a copolymerization reaction; and (3) performing a neutralization reaction. The crosslinked viscosity-reducing polycarboxylic acid water reducer is prepared from the copolymerization of the following components: esterified monomers prepared by esterification reactions of an allyl alcohol monomer with 2-phosphonobutane-1,2,4-tricarboxylic acid, which comprise a product obtained by esterifying one carboxyl group in 2-phosphonobutane-1,2,4-tricarboxylic acid and a small amount of products obtained by esterifying two carboxyl groups and esterifying three carboxyl groups in the 2-phosphonobutane-1,2,4-tricarboxylic acid, a polyether macromonomer, 2-methacryloyloxyethyl choline phosphate and an unsaturated acid, so that said polymer has a lightly crosslinked structure while a phosphate, a carboxylate, a quaternary ammonium salt and an ester group are introduced into the structure of the polymer.
Inventors:
ZHONG LINA (CN)
FANG YUNHUI (CN)
LAI HUAZHEN (CN)
KE YULIANG (CN)
ZHANG XIAOFANG (CN)
LIN YANMEI (CN)
LI GELI (CN)
LAI GUANGXING (CN)
FANG YUNHUI (CN)
LAI HUAZHEN (CN)
KE YULIANG (CN)
ZHANG XIAOFANG (CN)
LIN YANMEI (CN)
LI GELI (CN)
LAI GUANGXING (CN)
Application Number:
PCT/CN2019/072745
Publication Date:
March 12, 2020
Filing Date:
January 23, 2019
Export Citation:
Assignee:
KZJ NEW MAT GROUP CO LTD (CN)
International Classes:
C04B24/26; C08F230/02; C08F283/06
Foreign References:
| CN105236806A | 2016-01-13 | |||
| CN106046274A | 2016-10-26 | |||
| CN104311752A | 2015-01-28 | |||
| US20120279426A1 | 2012-11-08 | |||
| CN108276533A | 2018-07-13 | |||
| CN108484842A | 2018-09-04 |
Attorney, Agent or Firm:
WAYNE INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
Download PDF: