CN103601850A - Preparation method of super absorbent resin - Google Patents
Preparation method of super absorbent resin Download PDFInfo
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- CN103601850A CN103601850A CN201310492558.1A CN201310492558A CN103601850A CN 103601850 A CN103601850 A CN 103601850A CN 201310492558 A CN201310492558 A CN 201310492558A CN 103601850 A CN103601850 A CN 103601850A
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Abstract
The invention discloses a preparation method of super absorbent resin, which comprises the following steps: firstly preparing an sodium acrylate aqueous solution from acrylic acid and sodium hydroxide; pretreating a starch solution with an additive; well mixing the above two solutions, adding an oxidizing agent, a cross-linking agent, and a reducing agent, initiating polymerization at a temperature of 25 DEG C-30 DEG C; after the polymerization, performing granulation, drying, crushing, and sieving to obtain the finished product. The preparation method of super absorbent resin provided in the invention pretreats starch by the additive of vegetable protein, which greatly reduces the viscosity of the starch solution, not only makes production easy to operate, but also greatly improves the using amount of starch, and reduces production cost; polymerization is initiated at a low temperature, and thus the method is suitable for large-scale industrial production.
Description
Technical field
The present invention relates to a kind of preparation method of High hydrophilous resin.
Background technology
In order to reduce the production cost of High hydrophilous resin, people are monomer and the organism copolymerization of preparing High hydrophilous resin.At present, starch and olefines water-soluble monomer carry out graft copolymerization, are a kind of conventional methods of preparing High hydrophilous resin.
Chinese patent 02123911.8 discloses and has been entitled as " a kind of preparation method of High hydrophilous resin ", it is raw material that the method be take vinylformic acid, starch, sodium hydroxide, first use sodium hydroxide solution pasted starch, then mix with acrylic acid solution, initiator, linking agent, finally mixed solution is put into microwave oven, utilize microwave initiated polymerization, although the problem that this method has solved polymerization and grown time of drying, but adopt microwave initiated polymerization, be not suitable for large-scale industrial production.
Summary of the invention
In order to address the above problem, the object of the invention is to, a kind of preparation method of High hydrophilous resin is provided, both solved long problem of polymerization and time of drying, be applicable to again large-scale industrial production.
The preparation method of described High hydrophilous resin, it comprises the following steps:
One, vinylformic acid and sodium hydroxide are mixed with to the sodium acrylate aqueous solution that degree of neutralization is 70%-100%, standby;
Two, be mixed with the solution that concentration is 0.04%-0.25% by auxiliary agent is water-soluble, add starch, stir and be warming up to 75 ℃-85 ℃, gelatinization 5-15min, is then cooled to 30 ℃-40 ℃, obtains starch solution standby; Described starch consumption is the 0-200% of Acrylic Acid Monomer quality, and described auxiliary agent is vegetable-protein, the 0.1%-0.5% that consumption is starch quality;
Three, aforesaid propylene acid sodium aqueous solution is mixed with starch solution, add oxygenant, linking agent, reductive agent, be placed in initiated polymerization at 25 ℃ of-30 ℃ of temperature; Described oxygenant is ammonium persulphate or Potassium Persulphate, consumption is the 0.1%-0.5% of Acrylic Acid Monomer quality, described linking agent is N, N-methylene-bisacrylamide, consumption is the 0.03%-0.2% of Acrylic Acid Monomer quality, described reductive agent is sodium bisulfite, and consumption is the 0.2%-1.0% of Acrylic Acid Monomer quality;
Four, after polymerization, carry out granulation, oven dry, pulverize, sieve, get product.
The preparation method of High hydrophilous resin provided by the invention, its beneficial effect is, used additives vegetable-protein carries out pre-treatment to starch, greatly reduce the viscosity of starch solution, not only make to produce easy operation, and, starch consumption significantly improves, and has reduced production cost; Low temperature initiated polymerization, is applicable to large-scale industrial production.
Embodiment
Below in conjunction with six embodiment, the preparation method of High hydrophilous resin provided by the invention is described in detail.
Embodiment 1:
One, take 206 grams of vinylformic acid, 85 grams of sodium hydroxide, be dissolved in 215 grams of water, be mixed with the sodium acrylate aqueous solution;
Two, take 0.25 gram of vegetable-protein, be dissolved in 310 grams of water, then add 124 grams of starch, stir, be heated to 78 ℃, gelatinization 15min, is then cooled to 30 ℃;
Three, above-mentioned two kinds of solution are mixed, add successively 0.4 gram of ammonium persulphate, 0.08 gram of N,N methylene bis acrylamide, then adds 0.62 gram of sodium bisulfite, mixes, and mixed solution is heated to 26 ℃ and carries out polyreaction;
Four, after polyreaction completes, carry out granulation, 90 ℃ and dry, pulverize, sieve, get product.
Embodiment 2:
One, take 206 grams of vinylformic acid, 95 grams of sodium hydroxide, be dissolved in 215 grams of water, be mixed with the sodium acrylate aqueous solution;
Two, take 0.5 gram of vegetable-protein, be dissolved in 400 grams of water, then add 165 grams of starch, stir, be heated to 80 ℃, gelatinization 13min, is then cooled to 35 ℃;
Three, above-mentioned two kinds of solution are mixed, add successively 0.62 gram of Potassium Persulphate, 0.15 gram of N,N methylene bis acrylamide, then adds 0.9 gram of sodium bisulfite, mixes, and mixed solution is heated to 27 ℃ and carries out polyreaction;
Four, after polyreaction completes, carry out granulation, 90 ℃ and dry, pulverize, sieve, get product.
Embodiment 3:
One, take 206 grams of vinylformic acid, 100 grams of sodium hydroxide, be dissolved in 215 grams of water, be mixed with the sodium acrylate aqueous solution;
Two, take 0.62 gram of vegetable-protein, be dissolved in 500 grams of water, then add 206 grams of starch, stir, be heated to 80 ℃, gelatinization 12min, is then cooled to 37 ℃;
Three, above-mentioned two kinds of solution are mixed, add successively 0.7 gram of Potassium Persulphate, 0.2 gram of N,N methylene bis acrylamide, then adds 1.2 grams of sodium bisulfites, mixes, and mixed solution is heated to 29 ℃ and carries out polyreaction;
Four, after polyreaction completes, carry out granulation, 90 ℃ and dry, pulverize, sieve, get product.
Embodiment 4:
One, take 206 grams of vinylformic acid, 105 grams of sodium hydroxide, be dissolved in 215 grams of water, be mixed with the sodium acrylate aqueous solution;
Two, take 1.0 grams of vegetable-proteins, be dissolved in 800 grams of water, then add 267 grams of starch, stir, be heated to 82 ℃, gelatinization 10min, is then cooled to 40 ℃;
Three, above-mentioned two kinds of solution are mixed, add successively 0.8 gram of ammonium persulphate, 0.25 gram of N,N methylene bis acrylamide, then adds 1.4 grams of sodium bisulfites, mixes, and mixed solution is heated to 30 ℃ and carries out polyreaction;
Four, after polyreaction completes, carry out granulation, 90 ℃ and dry, pulverize, sieve, get product.
Embodiment 5:
One, take 206 grams of vinylformic acid, 110 grams of sodium hydroxide, be dissolved in 215 grams of water, be mixed with the sodium acrylate aqueous solution;
Two, take 1.24 grams of vegetable-proteins, be dissolved in 1000 grams of water, then add 309 grams of starch, stir, be heated to 84 ℃, gelatinization 8min, is then cooled to 30 ℃;
Three, above-mentioned two kinds of solution are mixed, add successively 0.9 gram of ammonium persulphate, 0.3 gram of N,N methylene bis acrylamide, then adds 1.6 grams of sodium bisulfites, mixes, and mixed solution is heated to 25 ℃ and carries out polyreaction;
Four, after polyreaction completes, carry out granulation, 90 ℃ and dry, pulverize, sieve, get product.
Embodiment 6:
One, take 206 grams of vinylformic acid, 114 grams of sodium hydroxide, be dissolved in 215 grams of water, be mixed with the sodium acrylate aqueous solution;
Two, take 2.0 grams of vegetable-proteins, be dissolved in 2000 grams of water, then add 412 grams of starch, stir, be heated to 80 ℃, gelatinization 10min, is then cooled to 35 ℃;
Three, above-mentioned two kinds of solution are mixed, add successively 1.0 grams of ammonium persulphates, 0.4 gram of N,N methylene bis acrylamide, then adds 1.8 grams of sodium bisulfites, mixes, and mixed solution is heated to 30 ℃ and carries out polyreaction;
Four, after polyreaction completes, carry out granulation, 90 ℃ and dry, pulverize, sieve, get product.
Claims (1)
1. a preparation method for High hydrophilous resin, is characterized in that: it comprises the following steps:
One, vinylformic acid and sodium hydroxide are mixed with to the sodium acrylate aqueous solution that degree of neutralization is 70%-100%, standby;
Two, be mixed with the solution that concentration is 0.04%-0.25% by auxiliary agent is water-soluble, add starch, stir and be warming up to 75 ℃-85 ℃, gelatinization 5-15min, is then cooled to 30 ℃-40 ℃, obtains starch solution standby; Described starch consumption is the 0-200% of Acrylic Acid Monomer quality, and described auxiliary agent is vegetable-protein, the 0.1%-0.5% that consumption is starch quality;
Three, aforesaid propylene acid sodium aqueous solution is mixed with starch solution, add oxygenant, linking agent, reductive agent, be placed in initiated polymerization at 25 ℃ of-30 ℃ of temperature; Described oxygenant is ammonium persulphate or Potassium Persulphate, consumption is the 0.1%-0.5% of Acrylic Acid Monomer quality, described linking agent is N, N-methylene-bisacrylamide, consumption is the 0.03%-0.2% of Acrylic Acid Monomer quality, described reductive agent is sodium bisulfite, and consumption is the 0.2%-1.0% of Acrylic Acid Monomer quality;
Four, after polymerization, carry out granulation, oven dry, pulverize, sieve, get product.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310492558.1A CN103601850A (en) | 2013-10-21 | 2013-10-21 | Preparation method of super absorbent resin |
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| CN201310492558.1A CN103601850A (en) | 2013-10-21 | 2013-10-21 | Preparation method of super absorbent resin |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104628957A (en) * | 2015-01-23 | 2015-05-20 | 长江大学 | High-strength gel for snubbing operation and preparation method of high-strength gel |
| CN105218687A (en) * | 2015-11-06 | 2016-01-06 | 天津工业大学 | The best process of preparing of one kind gac Porous Potato Starch |
| CN107232072A (en) * | 2017-05-03 | 2017-10-10 | 李连忠 | A kind of bright, high water absorption degree starch cat litter and its preparation technology |
| CN108250362A (en) * | 2017-12-01 | 2018-07-06 | 杭州全达优护理用品科技有限公司 | High-hydroscopicity sanitary napkin |
| CN108976344A (en) * | 2018-08-13 | 2018-12-11 | 武汉轻工大学 | A kind of preparation method of starch base hygroscopicity resin |
-
2013
- 2013-10-21 CN CN201310492558.1A patent/CN103601850A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104628957A (en) * | 2015-01-23 | 2015-05-20 | 长江大学 | High-strength gel for snubbing operation and preparation method of high-strength gel |
| CN105218687A (en) * | 2015-11-06 | 2016-01-06 | 天津工业大学 | The best process of preparing of one kind gac Porous Potato Starch |
| CN107232072A (en) * | 2017-05-03 | 2017-10-10 | 李连忠 | A kind of bright, high water absorption degree starch cat litter and its preparation technology |
| CN108250362A (en) * | 2017-12-01 | 2018-07-06 | 杭州全达优护理用品科技有限公司 | High-hydroscopicity sanitary napkin |
| CN108976344A (en) * | 2018-08-13 | 2018-12-11 | 武汉轻工大学 | A kind of preparation method of starch base hygroscopicity resin |
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Application publication date: 20140226 |