Polyethylene glycol, maleic acid (anhydride) monoesters superplasticizer polymaleic acid (anhydride) superplasticizer is maleic acid or maleic anhydride unit with polyethylene or polyethylene / propylene block After the first esterified copolymer polymerization methods. Hirata of maleic acid capped glycol ether and methyl-3-isobutene superplasticizer containing polyoxyalkylene side chains to overcome the gelling problem. Sun Santo et maleic anhydride with polyethylene glycol to esterification macromonomer of polyethylene glycol carboxylic acid ester, followed by addition of 2-acrylamido-2-methyl propene sulfonate and methacrylic acid, an aqueous solution of synthesis by copolymerizing the superplasticizer studied comonomer ratio, measured reaction temperature, reaction time, and to decide the reaction rate constants obtained kinetic equation of the polymerization process. Jiannan to maleic anhydride, emulsifier OP as raw materials, triethylamine as a catalyst for the esterification reaction, the product of maleic anhydride monoesters, maleic anhydride homemade single-methacrylate monomer polymerization to high activity and low activity initiator initiator complex combination of aqueous products caused by water reducing agent system polymerization reaction obtained at various concentrations. He Jing and other new synthetic route through polymer reaction method, with the S03 sulfonated styrene / maleic anhydride copolymer to introduce a sulfonic acid group, Hebei ready-mixed mortar admixtures, through self-catalysis sulfonic acid groups, pre- mix mortar admixtures, the maleic anhydride group is esterified graft synthesized polycarboxylate type superplasticizer with polyoxyethylene side chain. Ester crosslinking type agents Chongzhi an acrylic ester synthetic macromolecules partially cross-called MPCs (with three polyoxyethylene chain link) Polycarboxylate superplasticizer. Of poly (ethylene oxide) chain length in the cement of liquidity, the role of Zeta potential and cement compatibility, etc., and that the MPC-7 is a good performance of polycarboxylate based superplasticizer. Grafted type agents grafted copolymer superplasticizer is the latest product of superplasticizer research and development, including the orientation reaction such superplasticizer polyether compound with a carboxylic acid polymer body, polyether-modified high acid polymer composites, etc., usually of a molecular weight of 1000-2000 and an end carboxylic acid polymer is an alkoxy group, and the other end is a hydroxyl group or an amino group in the polyoxyethylene non-aqueous solvent graft modified; or to polyene polyamine polymer modified to obtain a graft rate is high and stable products, Hunan ready-mixed mortar admixtures, which reduce water and slump retention performance are superior. Introducing an amino group in the molecular structure, fluidity of cement compositions to improve retention performance, and to promote the cement hydration; through an ester bond or an alkylene amide bond modified graft, effectively extending the storage period. Jiangsu ready-mixed mortar admixture _ high-strength building materials (online consultation) _ ready-mixed mortar admixtures by high-strength building materials Linyi City Limited. Linyi high-strength building materials Limited (www.lygqjc.cn) Shandong Linyi, concrete and related products leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In the high-strength building materials led the staff warmly welcome all inquiries negotiations to create a better future for high-strength building materials.