CN105601775A - Method for preparing sodium polyacrylate solution - Google Patents
Method for preparing sodium polyacrylate solution Download PDFInfo
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- CN105601775A CN105601775A CN201410676189.6A CN201410676189A CN105601775A CN 105601775 A CN105601775 A CN 105601775A CN 201410676189 A CN201410676189 A CN 201410676189A CN 105601775 A CN105601775 A CN 105601775A
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- aqueous solution
- deionized water
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- ammonium persulfate
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Abstract
The invention discloses a method for preparing a sodium polyacrylate solution, and the product belongs to the chemical field. The sodium polyacrylate solution comprises the following raw materials by weight ratio: 20-22% of acrylic acid, 10-12% of sodium hydroxide, 64% of deionized water, 3.95% of sodium bisulfate, and 0.05% of ammonium persulfate, and the finished product is prepared by polymerizing and neutralizing the raw materials. The preparation method has the advantages of simple production technology, abundant raw material source, usage of universal device, convenient batch production, high product purity, and environmental protection. The product is mainly used as a water quality stabilizing agent and a scale inhibitor.
Description
Technical field
The invention belongs to chemical field, relate in particular to a kind of preparation method of sodium polyacrylate solution.
Background technology
Sodium Polyacrylate is-kind of water-soluble high-molecular compound, molecular formula is [C3H3O2Na] n, relative molecular mass is little of hundreds of, large to several ten million, outward appearance is colourless or weak yellow liquid, thick liquid, gel, resin or pressed powder, be dissolved in the media such as cold water, warm water, glycerine, propane diols, stable to variations in temperature, there is the effect of fixing metal ions, can stop the negative consequence of metal ion to product, be a kind of surfactant with multiple property, the pH value of the aqueous solution is generally between 6-9. The character of Sodium Polyacrylate, purposes have an obvious difference with relative molecular mass is different, and relative molecular mass at 1000-10000, can be used as dispersant, is applied to the industrial circles such as Scale Inhibitors for Water, papermaking, textile printing and dyeing, pottery; Relative molecular mass is in 3000-4000 concentration during at 65%-70%, as papermaking coating dispersant; Molecular weight is between 1000-2000, as water quality stabilizer and antisludging agent; Molecular weight is more than 100, as coating thickener and water-loss reducer, can make the synthetic latex viscositys such as carboxylated styrene-butadiene latex, acrylic acid ester emulsion increase, avoid moisture to separate out, keep coating system stable, also can be used as flocculant, super absorbent resin, soil conditioner, and in food industry, make tackifier, emulsifying dispersant etc. The present invention is a kind of production method of sodium polyacrylate solution of low molecular mass, product is mainly as water quality stabilizer and antisludging agent, this technique has that raw material sources are abundant, conversion rate of products is high, product purity is high, production and application common apparatus, be convenient to batch production, without series of advantages such as sewage toxic emission, environmental protection.
Summary of the invention
The problem that the present invention mainly solves is to provide a kind of preparation method of sodium polyacrylate solution, the method use raw material by weight ratio: acrylic acid 20%-22%, NaOH 10%-12%, deionized water 64%, sodium hydrogensulfite 3.95%, ammonium persulfate 0.05%.
The present invention can be achieved through the following technical solutions:
A preparation method for sodium polyacrylate solution, its feature is made up of following steps:
(1), by the NaOH of formula ratio with to account for total amount be that 40% deionized water mixes in the first agitator tank, obtain sodium hydrate aqueous solution and place stand-by.
(2), by the ammonium persulfate of formula ratio with to account for total amount be that 6% deionized water mixes in the second agitator tank, obtain ammonium persulfate aqueous solution and place stand-by.
(3) be that 18% deionized water is sent into chemical reaction kettle by accounting for total amount, add the sodium hydrogensulfite of formula ratio simultaneously, make while stirring slowly to heat up in chemical reaction kettle, in the time that temperature in the kettle reaches 60-64 DEG C, add slowly the acrylic acid of formula ratio, keep temperature-resistant continuation to stir 2-2.2 hour, now the ammonium persulfate aqueous solution preparing is added, after stirring, stop stirring insulation reaction 2.6-2.8 hour.
(4) continue to stir, add the sodium hydrate aqueous solution preparing, when the pH value of reactant liquor is for 7.1-7.3 in tune chemical reaction kettle, stop adding sodium hydrate aqueous solution, stop heat supply, temperature of charge in still is slowly reduced to after normal temperature, blowing is packaged to be finished product.
Further technical scheme of the present invention is:
Reaction temperature in chemical reaction kettle described in step (2) is 62 DEG C.
The invention has the beneficial effects as follows: the preparation method that a kind of sodium polyacrylate solution is provided, the advantages such as this production method has that production technology is simple, raw material sources are abundant, use common apparatus, be convenient to batch production, product purity is high, environmental protection, product is mainly as water quality stabilizer and antisludging agent.
Detailed description of the invention
Embodiment 1
Be 10% NaOH and to account for total amount be that 40% deionized water mixes in the first agitator tank by accounting for total amount, obtain sodium hydrate aqueous solution and place stand-by; Be 0.05% ammonium persulfate and to account for total amount be that 6% deionized water mixes in the second agitator tank by accounting for total amount, obtain ammonium persulfate aqueous solution and place stand-by; Be that 18% deionized water is sent into chemical reaction kettle by accounting for total amount, add that to account for total amount be 3.95% sodium hydrogensulfite simultaneously, make while stirring slowly to heat up in chemical reaction kettle, in the time that temperature in the kettle reaches 60 DEG C, add slowly that to account for total amount be 22% acrylic acid, keep temperature-resistant continuation to stir 2.2 hours, now the ammonium persulfate aqueous solution preparing is added, after stirring, stop stirring insulation reaction 2.6 hours; Continue to stir, add the sodium hydrate aqueous solution preparing, adjusting the pH value of reactant liquor in chemical reaction kettle is to stop adding sodium hydrate aqueous solution at 7.1 o'clock, stops heat supply, and temperature of charge in still is slowly reduced to after normal temperature, and blowing is packaged to be finished product.
Embodiment 2
Be 11% NaOH and to account for total amount be that 40% deionized water mixes in the first agitator tank by accounting for total amount, obtain sodium hydrate aqueous solution and place stand-by; Be 0.05% ammonium persulfate and to account for total amount be that 6% deionized water mixes in the second agitator tank by accounting for total amount, obtain ammonium persulfate aqueous solution and place stand-by; Be that 18% deionized water is sent into chemical reaction kettle by accounting for total amount, add that to account for total amount be 3.95% sodium hydrogensulfite simultaneously, make while stirring slowly to heat up in chemical reaction kettle, in the time that temperature in the kettle reaches 62 DEG C, add slowly that to account for total amount be 21% acrylic acid, keep temperature-resistant continuation to stir 2.1 hours, now the ammonium persulfate aqueous solution preparing is added, after stirring, stop stirring insulation reaction 2.7 hours; Continue to stir, add the sodium hydrate aqueous solution preparing, adjusting the pH value of reactant liquor in chemical reaction kettle is to stop adding sodium hydrate aqueous solution at 7.2 o'clock, stops heat supply, and temperature of charge in still is slowly reduced to after normal temperature, and blowing is packaged to be finished product.
Embodiment 3
Be 12% NaOH and to account for total amount be that 40% deionized water mixes in the first agitator tank by accounting for total amount, obtain sodium hydrate aqueous solution and place stand-by; Be 0.05% ammonium persulfate and to account for total amount be that 6% deionized water mixes in the second agitator tank by accounting for total amount, obtain ammonium persulfate aqueous solution and place stand-by; Be that 18% deionized water is sent into chemical reaction kettle by accounting for total amount, add that to account for total amount be 3.95% sodium hydrogensulfite simultaneously, make while stirring slowly to heat up in chemical reaction kettle, in the time that temperature in the kettle reaches 64 DEG C, add slowly that to account for total amount be 20% acrylic acid, keep temperature-resistant continuation to stir 2 hours, now the ammonium persulfate aqueous solution preparing is added, after stirring, stop stirring insulation reaction 2.8 hours; Continue to stir, add the sodium hydrate aqueous solution preparing, adjusting the pH value of reactant liquor in chemical reaction kettle is to stop adding sodium hydrate aqueous solution at 7.3 o'clock, stops heat supply, and temperature of charge in still is slowly reduced to after normal temperature, and blowing is packaged to be finished product.
Claims (2)
1. a preparation method for sodium polyacrylate solution, the raw material of use comprises by weight ratio: acrylic acid 20%-22%, NaOH 10%-12%, deionized water 64%, sodium hydrogensulfite 3.95%, ammonium persulfate 0.05%, is characterized in that:
(1), by the NaOH of formula ratio with to account for total amount be that 40% deionized water mixes in the first agitator tank, obtain sodium hydrate aqueous solution and place stand-by;
(2), by the ammonium persulfate of formula ratio with to account for total amount be that 6% deionized water mixes in the second agitator tank, obtain ammonium persulfate aqueous solution and place stand-by;
(3) be that 18% deionized water is sent into chemical reaction kettle by accounting for total amount, add the sodium hydrogensulfite of formula ratio simultaneously, make while stirring slowly to heat up in chemical reaction kettle, in the time that temperature in the kettle reaches 60-64 DEG C, add slowly the acrylic acid of formula ratio, keep temperature-resistant continuation to stir 2-2.2 hour, now the ammonium persulfate aqueous solution preparing is added, after stirring, stop stirring insulation reaction 2.6-2.8 hour;
(4) continue to stir, add the sodium hydrate aqueous solution preparing, when the pH value of reactant liquor is for 7.1-7.3 in tune chemical reaction kettle, stop adding sodium hydrate aqueous solution, stop heat supply, temperature of charge in still is slowly reduced to after normal temperature, blowing is packaged to be finished product.
2. the preparation method of a kind of sodium polyacrylate solution according to claim 1, is characterized in that: the reaction temperature in the chemical reaction kettle described in step (2) is 62 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410676189.6A CN105601775A (en) | 2014-11-24 | 2014-11-24 | Method for preparing sodium polyacrylate solution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410676189.6A CN105601775A (en) | 2014-11-24 | 2014-11-24 | Method for preparing sodium polyacrylate solution |
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| Publication Number | Publication Date |
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| CN105601775A true CN105601775A (en) | 2016-05-25 |
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| CN201410676189.6A Pending CN105601775A (en) | 2014-11-24 | 2014-11-24 | Method for preparing sodium polyacrylate solution |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105936655A (en) * | 2016-06-15 | 2016-09-14 | 湖州超能生化有限公司 | Polymerization device and method of sodium polyacrylate |
| CN106635047A (en) * | 2017-02-03 | 2017-05-10 | 贵州华新国际建设有限公司 | Preparation method of water and soil improver and component thereof and method for purifying water quality or improving soil by water and soil improver |
| CN110372110A (en) * | 2019-07-31 | 2019-10-25 | 科淋(北京)科技有限公司 | A kind of efficient scale material and its preparation method and application |
-
2014
- 2014-11-24 CN CN201410676189.6A patent/CN105601775A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105936655A (en) * | 2016-06-15 | 2016-09-14 | 湖州超能生化有限公司 | Polymerization device and method of sodium polyacrylate |
| CN106635047A (en) * | 2017-02-03 | 2017-05-10 | 贵州华新国际建设有限公司 | Preparation method of water and soil improver and component thereof and method for purifying water quality or improving soil by water and soil improver |
| CN110372110A (en) * | 2019-07-31 | 2019-10-25 | 科淋(北京)科技有限公司 | A kind of efficient scale material and its preparation method and application |
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Application publication date: 20160525 |
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| WD01 | Invention patent application deemed withdrawn after publication |