A kind of preparation method of water retention anti-mud type polycarboxylate superplasticizer
A technology of polycarboxylic acid and anti-mud type, which is applied in the field of construction admixtures, can solve the problems of no anti-mud effect, etc., and achieve excellent anti-mud effect, increase steric hindrance effect, and good anti-poor layer effect
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Embodiment 1
[0024](1) Esterified reaction: 180.00 g of glucose, 758.00 g 2-amino-4-methyl-5-phosphorus-3-penate acid ethyl ethane, 1000.00g molecular weight of 1000 methoxy polyethylene glycol, 15.00g Phenothiazine and 18.00 g of toluenesulfonic acid were mixed in the reaction kettle, reacting at a constant temperature of 4.0 h at 110 ° C, during normal temperature, during which water was removed, and the reaction was reduced to the end of the reaction. Esterified products and mixtures of esterified products and unreacted 2-amino-4-methyl-5-phosphorus-3-pentyl titrates were obtained;
[0025](2) A mixture of monomers: mixture produced by 200.00g Step (1), 1.20 g 3- (2-fluorophenyl) prop-2-oetrate, 12.00 g of acrylic acid, 8.00 g of hydroxyethyl acrylate Ester mixed, and 100.00 g of water was added such that it was dissolved to obtain a common monomer mixture solution;
[0026](3) Copolymerization reaction: The above comonomer mixture solution, a hydrogenated aqueous solution of hydrogenulfur, 20.00 g...
Embodiment 2
[0029](1) Esterified reaction: 180.00 g of glucose, 731.00 g 2-amino-4-methyl-5-phosphorus-3-penyl acid, 960.00 g of a methoxy polyethylene glycol polypropylene glycol copolymer of 800, 12.00 g of phenothiazine and 15.00 g of ethylsulfonic acid were mixed in the reaction kettle, under nitrogen protection, at 120 ° C, at a constant temperature of 5.0 h, during which water was used to remove water, after the reaction was completed, the reaction was completed. Down to room temperature, a mixture of esterified products and unreacted 2-amino-4-methyl-5-phosphorus-3-pentyl acid is obtained;
[0030](2) Mixer blending: 2.00g of step (1) mixture, 2.00 g of 4-fluoroisurate methyl ester, 16.00 maleic anhydride and hydroxyethyl methacrylate, and 100.00 g Water causes it to dissolve to obtain a copolymerized monomer mixture;
[0031](3) Copolymerization react: a solution of the above copolymer monomer, azo diisobutylhydrate hydrochloride (herein, 4.00 g, water 40.00 g) and aqueous sodium acetate (whe...
Embodiment 3
[0034](1) Esterified reaction: 180.00 g of glucose, 752.00 g 2-amino-4-methyl-5-phosphonyl group-3-oxoic acid, 1440 g of a molecular weight of 1200 ethoxy, 22.00 g of benzene Diol and 20.00 g of benzenesulfonic acid were mixed in the reactor, and the reaction was reacted at a constant temperature of 4.0 h at 100 ° C under nitrogen, and the water was removed by vacuum or nitrogen gas tape water. After the reaction was completed, the reaction was reduced to room temperature, That is, a mixture of esterified products and unreacted 2-amino-4-methyl-5-phosphono-3 -ylic acid is obtained;
[0035](2) Mixer blending: C: 200.00g Step (1) mixture, 2.10 g 3- (2,4-difluorophenyl) acrylate, 18.00 g of U.10.00g of Hydroxypropion Ester mixed, and 100.00 g of water was added such that it was dissolved to obtain a common monomer mixture solution;
[0036](3) Copolymerization reaction: a solution of the comonomer mixture, azo dithoxyanoate (3.60 g of azo dithoxyanoate, water 40.00g) and trisodionate of pho...
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