Preparation method of multi-component polymerized scale inhibitor
A scale inhibitor, multi-copolymerization technology, applied in chemical instruments and methods, descaling and water softening, water/sludge/sewage treatment, etc. low consumption effect
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[0013] Example 1
[0014] (1) Take 12 mL of acrylic acid and 15 mL of methyl acrylate and place them in a beaker, mix well, and prepare solution (I);
[0015] (2) Dissolve 10g sodium allyl sulfonate and 5g ammonium persulfate in 20mL water to prepare solution (II);
[0016] (3) Dissolve 30g aconitic acid in 50mL water, raise the temperature to 85℃, add 5mL isopropanol under stirring, put solution (I) and solution (II) into the dropping funnel and add dropwise at a constant speed. (The dripping speed is controlled within 40 minutes). After all the dripping is completed, react at a constant temperature at 85°C for 4 hours, stop the reaction, and add 50% NaOH solution dropwise to the product after cooling to 50°C to adjust the pH to weakly alkaline. A yellow viscous transparent liquid, that is, a multi-element copolymerization type scale inhibitor is obtained.
Example Embodiment
[0017] Example 2
[0018] (1) Take 15mL of acrylic acid and 18mL of methyl acrylate in a small cup, mix well, and prepare solution (I);
[0019] (2) Dissolve 10g of sodium allyl sulfonate and 6g of ammonium persulfate in 25mL of water to prepare solution (II);
[0020] (3) Dissolve 30g aconitic acid in 55mL water, raise the temperature to 90℃, add 7mL isopropanol under stirring, put solution (I) and solution (II) into the dropping funnel and add dropwise at a constant speed (The dripping speed is controlled within 40 minutes). After all the dripping is completed, react at a constant temperature of 90°C for 3 hours, stop the reaction, cool to about 50°C, add 50% NaOH solution dropwise to the product, and adjust the pH to weakly alkaline. A yellow viscous transparent liquid, that is, a multi-element copolymerization type scale inhibitor is obtained.
Example Embodiment
[0021] Example 3
[0022] (1) Take 20 mL of acrylic acid and 22 mL of methyl acrylate in a small cup, mix well, and prepare solution (I);
[0023] (2) Dissolve 15g sodium allyl sulfonate and 8g ammonium persulfate in 30mL water to prepare solution (II);
[0024] (3) Dissolve 35g of aconitic acid in 60mL of water, raise the temperature to 95℃, add 10mL of isopropanol under stirring, put solution (I) and solution (II) into the dropping funnel and add dropwise at a constant speed (The dripping rate is controlled within 60min). After all the dripping is completed, react at 95°C for 5 hours, stop the reaction, cool to about 50°C, add 50% NaOH solution to the product dropwise, and adjust the pH to weakly alkaline. A yellow viscous transparent liquid, that is, a multi-element copolymerization type scale inhibitor is obtained.
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