A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
PREPARATION METHOD OF HYPERBRANCHED POLYCARBOXYLIC ACID TYPE COPOLYMER CEMENT DISPERSANT
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 R 1 is H or a methyl; X 1 =O, CH 2 O, CH 2 CH 2 O; m is an integer from 5 to 200. Monomer B is expressed by General Formula (2), where R 2 is H or COOM; R 3 is H or CH 3 and M is H, Na, K or NH 4 ; Monomer C is expressed by General Formula (3), where R 4 is H or methyl; X 2 =O, CH 2 O, CH 2 CH 2 O; Y=CH 2 , CH 2 CH 2 , CH(CH 3 ), CH 2 CH 2 CH 2 , CH(CH 3 )CH 2 , C(CH 3 ) 2 and n is an integer from 5 to 200.
PREPARATION METHOD OF HYPERBRANCHED POLYCARBOXYLIC ACID TYPE COPOLYMER CEMENT DISPERSANT
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 R 1 is H or a methyl; X 1 =O, CH 2 O, CH 2 CH 2 O; m is an integer from 5 to 200. Monomer B is expressed by General Formula (2), where R 2 is H or COOM; R 3 is H or CH 3 and M is H, Na, K or NH 4 ; Monomer C is expressed by General Formula (3), where R 4 is H or methyl; X 2 =O, CH 2 O, CH 2 CH 2 O; Y=CH 2 , CH 2 CH 2 , CH(CH 3 ), CH 2 CH 2 CH 2 , CH(CH 3 )CH 2 , C(CH 3 ) 2 and n is an integer from 5 to 200.
PREPARATION METHOD OF HYPERBRANCHED POLYCARBOXYLIC ACID TYPE COPOLYMER CEMENT DISPERSANT
VERFAHREN ZUR HERSTELLUNG EINES HYPERVERZWEIGTEN POLYCARBONSÄURECOPOLYMER-ZEMENTDISPERGIERMITTELS
PROCÉDÉ DE PRÉPARATION D'UN AGENT DISPERSANT DE CIMENT COPOLYMÈRE DE TYPE ACIDE POLYCARBOXYLIQUE HYPER RAMIFIÉ
MIAO CHANGWEN (author) / QIAO MIN (author) / RAN QIANPING (author) / LIU JIAPING (author) / ZHOU DONGLIANG (author) / YANG YONG (author) / MAO YONGLIN (author)
2016-03-02
Patent
Electronic Resource
English
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