Synthesis of starting material (1) allyl alcohol polyoxyethylene ethers (APEG), the chemical formula: CH2 = CHCH20 (CH2CH20) n H). (2) ammonium persulfate (AI'S), formula (NI-I4) 2S208, molecular weight 228.2 Properties: white crystal, there is some oxidation. (3) potassium persulfate, suppliers K2S208, 270 molecular weight poly-carboxylic acid liquor production, an inorganic compound, a white crystalline, odorless, deliquescence, polycarboxylic acid liquor combustion plant, with irritation. (4) maleic anhydride, formula CHCOOCOCH; molecular weight 98, as colorless needles. (5) allyl sulfonate (SAS), a molecular weight of 144; the structural formula: CH2 = CH-CH2 an SO3Na; white solid powder. (6) sodium methacrylate (SMAS), industrial products, Molecular Structure: CH2C (CH3) CH2SO3Na, a molecular weight of 158, a white flaky crystal. (7) of methacrylic acid (MAA), AR, colorless liquid, molecular formula: C4H60, the molecular weight of 86, the freezing point ≥12.5'C. (8) acrylic acid (from), molecular formula: C3H4O2, molecular weight 72, ≥99.0% polylactic acid content of the mother liquor manufacturer, colorless liquid polyethylene acid liquor, irritating odor. Depending on the poly-carboxylic acid based superplasticizer products into its main chain structure of two categories: one acrylic or methacrylic acid-based chain, graft different side chain length of the polyether. The other is based maleic anhydride grafting different side chain length of the polyether. On this basis, it derived from a range of different characteristics of superplasticizer products. [2] before the polycarboxylate admixture occurs, there are lignin sulfonates admixtures, naphthalene sulfonate formaldehyde condensates, melamine formaldehyde condensate, acetone sulfonate formaldehyde condensate, an amino sulfonate formaldehyde condensate and the like. The early 1980s, Japan developed the first successful superplasticizer. A new generation of polycarboxylate type superplasticizer overcome some disadvantages of traditional water reducer, with a low dosage, good performance slump, concrete shrinkage rate, adjustable and strong on the molecular structure of high performance potential, production highlight the advantages of the process does not use formaldehyde. [3] The polycarboxylic acid liquor factory, liquor Jingzhou City-acid, high-strength high-strength building materials provided by the Building Materials Co., Linyi. Linyi high-strength building materials Limited (www.lygqjc.cn) strong, credible, concrete and Shandong Linyi products and other industries has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead high-strength construction materials into the brilliant and you work for a better future!