Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of hyperbranched polycarboxylic acid containing 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, R1 is H or a methyl; X1═O, CH2O, CH2CH2O; m is an integer from 5 to 200. Monomer B is expressed by General Formula (2), where, R2 is H or COOM; R3 is H or CH3 and M is H, Na, K or NH4; Monomer C is expressed by General Formula (3), where, R4 is H or methyl; X2═O, CH2O, CH2CH2O; Y═CH2, CH2CH2, CH(CH3), CH2CH2CH2, CH(CH3)CH2, C(CH3)2 and n is an integer from 5 to 200.
Preparation method of hyperbranched polycarboxylic acid containing 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, R1 is H or a methyl; X1═O, CH2O, CH2CH2O; m is an integer from 5 to 200. Monomer B is expressed by General Formula (2), where, R2 is H or COOM; R3 is H or CH3 and M is H, Na, K or NH4; Monomer C is expressed by General Formula (3), where, R4 is H or methyl; X2═O, CH2O, CH2CH2O; Y═CH2, CH2CH2, CH(CH3), CH2CH2CH2, CH(CH3)CH2, C(CH3)2 and n is an integer from 5 to 200.
Preparation method of hyperbranched polycarboxylic acid containing copolymer cement dispersant
MIAO CHANGWEN (Autor:in) / QIAO MIN (Autor:in) / RAN QIANPING (Autor:in) / LIU JIANPING (Autor:in) / ZHOU DONGLIANG (Autor:in) / YANG YONG (Autor:in) / MAO YONGLIN (Autor:in)
03.11.2015
Patent
Elektronische Ressource
Englisch
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