PREPARATION METHOD FOR HIGH SLUMP-RETENTION POLYCARBOXYLIC ACID WATER REDUCING AGENT

WIPO Patent Application WO/2019/128690

A1

The present invention discloses a preparation method for a high slump-retention polycarboxylic acid water reducing agent. Compared with conventional solution polymerization methods, the present invention adopts an initiation system combining a photoinitiator and a redox initiation system to increase reaction rates, has the advantages of high reaction speeds, high conversion rates, narrow molecular weight distributions, and low cost, is easy to operate and industrialize, and has broad application prospects. The prepared polycarboxylic acid water reducing agent has stable performance, and a molecular structure thereof is a comb structure in which a polar group is present in a main chain and a polyoxyethylene segment is present in a side chain to form a space barrier, so as to improve the dispersibility and dispersibility maintaining ability of cement and to achieve high slump retention.

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KE YULIANG (CN)
FANG YUNHUI (CN)
ZHONG LINA (CN)
ZHANG XIAOFANG (CN)
LI GELI (CN)
LAI GUANGXING (CN)
GUO YUANQIANG (CN)
LIN TIANXING (CN)
WU MEIJUAN (CN)
MA XIUXING (CN)

PCT/CN2018/120180

July 04, 2019

December 11, 2018

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KZJ NEW MAT GROUP CO LTD (CN)

C08F283/06; C04B24/26; C08F2/48; C08F4/40; C08F216/14; C08F222/04; C08F222/06; C08F230/02; C04B103/30

CN108034024A	2018-05-15
CN106349435A	2017-01-25
CN105820298A	2016-08-03
CN104311754A	2015-01-28
CN106749973A	2017-05-31
EP2937321A1	2015-10-28

WAYNE INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)

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