Patent ID: 8933184
Filing Date: 2015-01-13
Classification: C04B,C08F

Abstract:
1. A producing method of polycarboxylic acid water-reducing agent characterized in that the method includes the following steps: the chain transfer agent, accelerant and initiator and the monomers are dissolved in a solvent, wherein, the chain transfer agent and accelerant composes a redox system, then are kept standing for polymerizing at 0 to 50° C. after uniform mixing; neutralize by adding a neutralizer to ending the reaction, wherein the chain transfer agent is one or more of the mercaptan, halide, or unsaturated hydrocarbon, the accelerant is one or more of reductant, alcohol, ketone, ester, ether, phenol, inorganic phosphide, organic phosphine, organic amine or organic carboxylic acid, the solvent is one or more of water, alcohol, aromatic hydrocarbon, aliphatic hydrocarbon, ester or ketone, the neutralizer is one or more of metal hydroxide, organic amine or inorganic ammonia, the initiator is one or more of peroxide, persulfide or azoic compound, and the monomers are unsaturated organic compounds.