CN1408741A - Method for preparing anti-drought water-retaining agent - Google Patents
Method for preparing anti-drought water-retaining agent Download PDFInfo
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- CN1408741A CN1408741A CN 01141924 CN01141924A CN1408741A CN 1408741 A CN1408741 A CN 1408741A CN 01141924 CN01141924 CN 01141924 CN 01141924 A CN01141924 A CN 01141924A CN 1408741 A CN1408741 A CN 1408741A
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- retaining agent
- water
- preparation
- drought water
- starch
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- 238000000034 method Methods 0.000 title description 12
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 41
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000002360 preparation method Methods 0.000 claims abstract description 15
- 229920002472 Starch Polymers 0.000 claims abstract description 13
- 235000019698 starch Nutrition 0.000 claims abstract description 10
- 239000008107 starch Substances 0.000 claims abstract description 10
- 239000000178 monomer Substances 0.000 claims abstract description 8
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims abstract description 8
- 238000006243 chemical reaction Methods 0.000 claims abstract description 7
- 239000003513 alkali Substances 0.000 claims abstract description 6
- 239000003999 initiator Substances 0.000 claims abstract description 6
- 238000001291 vacuum drying Methods 0.000 claims abstract description 5
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 10
- XMPZTFVPEKAKFH-UHFFFAOYSA-P ceric ammonium nitrate Chemical compound [NH4+].[NH4+].[Ce+4].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O XMPZTFVPEKAKFH-UHFFFAOYSA-P 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 8
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims description 7
- NIXOWILDQLNWCW-UHFFFAOYSA-N Acrylic acid Chemical group OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 7
- KUDUQBURMYMBIJ-UHFFFAOYSA-N 2-prop-2-enoyloxyethyl prop-2-enoate Chemical group C=CC(=O)OCCOC(=O)C=C KUDUQBURMYMBIJ-UHFFFAOYSA-N 0.000 claims description 6
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 6
- -1 polyoxyethylene Polymers 0.000 claims description 6
- 239000004160 Ammonium persulphate Substances 0.000 claims description 5
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 5
- 235000019395 ammonium persulphate Nutrition 0.000 claims description 5
- 239000006185 dispersion Substances 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 5
- 238000010298 pulverizing process Methods 0.000 claims description 5
- 229940100445 wheat starch Drugs 0.000 claims description 5
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 4
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 claims description 4
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 4
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 3
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 3
- 229930195729 fatty acid Natural products 0.000 claims description 3
- 239000000194 fatty acid Substances 0.000 claims description 3
- 239000007789 gas Substances 0.000 claims description 3
- 229920000223 polyglycerol Polymers 0.000 claims description 3
- LGPAKRMZNPYPMG-UHFFFAOYSA-N (3-hydroxy-2-prop-2-enoyloxypropyl) prop-2-enoate Chemical compound C=CC(=O)OC(CO)COC(=O)C=C LGPAKRMZNPYPMG-UHFFFAOYSA-N 0.000 claims description 2
- 229920002818 (Hydroxyethyl)methacrylate Polymers 0.000 claims description 2
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 claims description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 2
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 claims description 2
- 239000004342 Benzoyl peroxide Substances 0.000 claims description 2
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 claims description 2
- WOBHKFSMXKNTIM-UHFFFAOYSA-N Hydroxyethyl methacrylate Chemical compound CC(=C)C(=O)OCCO WOBHKFSMXKNTIM-UHFFFAOYSA-N 0.000 claims description 2
- 244000017020 Ipomoea batatas Species 0.000 claims description 2
- 235000002678 Ipomoea batatas Nutrition 0.000 claims description 2
- 240000003183 Manihot esculenta Species 0.000 claims description 2
- 235000016735 Manihot esculenta subsp esculenta Nutrition 0.000 claims description 2
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims description 2
- 239000011837 N,N-methylenebisacrylamide Substances 0.000 claims description 2
- 240000007594 Oryza sativa Species 0.000 claims description 2
- 235000007164 Oryza sativa Nutrition 0.000 claims description 2
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 2
- 239000004159 Potassium persulphate Substances 0.000 claims description 2
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 2
- 239000004141 Sodium laurylsulphate Substances 0.000 claims description 2
- HVVWZTWDBSEWIH-UHFFFAOYSA-N [2-(hydroxymethyl)-3-prop-2-enoyloxy-2-(prop-2-enoyloxymethyl)propyl] prop-2-enoate Chemical compound C=CC(=O)OCC(CO)(COC(=O)C=C)COC(=O)C=C HVVWZTWDBSEWIH-UHFFFAOYSA-N 0.000 claims description 2
- 235000019400 benzoyl peroxide Nutrition 0.000 claims description 2
- TXTCTCUXLQYGLA-UHFFFAOYSA-L calcium;prop-2-enoate Chemical compound [Ca+2].[O-]C(=O)C=C.[O-]C(=O)C=C TXTCTCUXLQYGLA-UHFFFAOYSA-L 0.000 claims description 2
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims description 2
- 235000013312 flour Nutrition 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- ZIUHHBKFKCYYJD-UHFFFAOYSA-N n,n'-methylenebisacrylamide Chemical compound C=CC(=O)NCNC(=O)C=C ZIUHHBKFKCYYJD-UHFFFAOYSA-N 0.000 claims description 2
- 229920000136 polysorbate Polymers 0.000 claims description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 2
- 239000012286 potassium permanganate Substances 0.000 claims description 2
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims description 2
- 235000019394 potassium persulphate Nutrition 0.000 claims description 2
- 229920001592 potato starch Polymers 0.000 claims description 2
- VVWRJUBEIPHGQF-UHFFFAOYSA-N propan-2-yl n-propan-2-yloxycarbonyliminocarbamate Chemical compound CC(C)OC(=O)N=NC(=O)OC(C)C VVWRJUBEIPHGQF-UHFFFAOYSA-N 0.000 claims description 2
- 150000003242 quaternary ammonium salts Chemical class 0.000 claims description 2
- 235000009566 rice Nutrition 0.000 claims description 2
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims description 2
- 235000019333 sodium laurylsulphate Nutrition 0.000 claims description 2
- DAJSVUQLFFJUSX-UHFFFAOYSA-M sodium;dodecane-1-sulfonate Chemical compound [Na+].CCCCCCCCCCCCS([O-])(=O)=O DAJSVUQLFFJUSX-UHFFFAOYSA-M 0.000 claims description 2
- 238000006386 neutralization reaction Methods 0.000 abstract description 2
- 239000003431 cross linking reagent Substances 0.000 abstract 1
- 239000002270 dispersing agent Substances 0.000 abstract 1
- 239000012299 nitrogen atmosphere Substances 0.000 abstract 1
- 239000012266 salt solution Substances 0.000 description 11
- 239000011347 resin Substances 0.000 description 8
- 229920005989 resin Polymers 0.000 description 8
- 239000000243 solution Substances 0.000 description 5
- 230000002745 absorbent Effects 0.000 description 4
- 239000002250 absorbent Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000001035 drying Methods 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 229920002554 vinyl polymer Polymers 0.000 description 2
- 229920002261 Corn starch Polymers 0.000 description 1
- 229920002752 Konjac Polymers 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 239000008120 corn starch Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 210000002700 urine Anatomy 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Abstract
The present invention relates to the preparation process of drought-resisting water-retaining agent. In a container with stirrer, starch is gelatinized by adding water and at 80-100 deg.c, cooled to 30-80 deg.c, and mixed with unsaturated vinyl monomer and proper amount of initiator, dispersant and crosslinking agent to produce reaction at 30-80 deg.c for 0.5-3.5 hr under the protection of N2 atmosphere; and through further alkali neutralization to pH 6.0-8.0, vacuum drying and crushing, drought-resisting water-retaining agent is produced. The present invention may be used in agriculture, forestry and other fields.
Description
Technical field
The present invention relates to a kind of preparation method of anti-drought water-retaining agent, specifically is that a kind of vinyl monomer of saying is grafted to the preparation method of the anti-drought water-retaining agent that the starch molecular chain previous step makes.
Background technology
Anti-drought water-retaining agent is a kind of super absorbent resin.It studies success by USDA north institute first in sixties end.Super absorbent resin can absorb hundreds of times of own wts, even thousands of times distilled water, and salt solution, urine and blood are also had the certain absorption ability.High property water-absorbing resin also can be used for aspects such as soil water-retaining, seed soaking, afforestation and fresh flower, vegetables, fruit water-holding fresh-keeping except being used for sanitary material.Water-holding agent is in the experimental study of China's agricultural aspect the herding time of existing two more than ten years, but the price of domestic production water-holding agent is generally higher, and it is not high that water-holding agent absorbs multiple, and popularization is restricted, can not be satisfactory.
At present, solution method and inverse suspension method are mainly adopted in the preparation of super absorbent resin.The shortcoming of solution method is that reaction later stage system viscosity is very big, time of drying is long, energy consumption is big, in addition, is subjected to product form restriction in the drying process, and drying temperature is wayward, easily causes the product performance fluctuation and influences the quality of product.The method that Chinese patent CN1041601A (a kind of preparation method of super absorbent resin) adopts is a solution method, and water content is big in its system, long reaction time, dry difficulty.The needed water yield of inverse suspension method reduces, but has adopted a large amount of organic solvents, cost height, solvent aftertreatment trouble.
Technology contents
The objective of the invention is to avoid above-mentioned defective of the prior art and adopt the one-step synthesis technology that on the basis of inverse suspension method, grows up, aim to provide a kind of method for preparing the anti-drought water-retaining agent that water absorbing properties is good, cost is low.
For achieving the above object, the present invention has adopted following technical scheme:
The preparation method of anti-drought water-retaining agent, it is characterized in that: in having the container of stirring, add 10-30% (weight ratio) starch and 15-25% water at 80-100 ℃ of following gelatinization 0.5-1h, the gelatinization postcooling adds 40-70% unsaturated vinyl monomer, 0.1-0.8% initiator, 0.1-2% dispersion agent and 0.05-0.6% linking agent during to 30-80 ℃, at N
2React 0.5-3.5h under the gas shiled under 30-80 ℃ of condition, the reaction back is neutralized to pH6.0-8.0 with alkali, makes anti-drought water-retaining agent after vacuum-drying, pulverizing.
As shown from the above technical solution, after starch added the water gelatinization at a certain temperature, add unsaturated vinyl monomer, initiator, dispersion agent, linking agent, adopt advanced one-step synthesis process, vinyl monomer is grafted on the starch molecule, the reaction back promptly obtains the anti-drought water-retaining agent product again with the alkali neutralization after super-dry, pulverizing.Raw material of the present invention is easy to get, technology advanced person, simple; Gained anti-drought water-retaining agent product water absorbing properties is good, the gel-strength height, and absorption speed is fast; The present invention has solved other polymerization process effectively and has brought graft product ground, ground filtering separation problem, has the grafting efficiency height, the advantage that solvent load is few, water-taking efficiency is high; The prepared product of the present invention can be widely used in fields such as agricultural, forestry, sanitary material industry.
Starch described in the technique scheme can be W-Gum, Rhizoma amorphophalli powder, sweet potato starch, tapioca (flour), yam starch, wheat starch or Starch rice.
Described unsaturated vinyl monomer is vinylformic acid, acrylate, methacrylic acid, methacrylate, CALCIUM ACRYLATE, methacrylate, acrylamide, vinyl cyanide or their mixture.
Described initiator is potassium permanganate, Potassium Persulphate, ammonium persulphate, hydrogen peroxide, Diisopropyl azodicarboxylate, dicumyl peroxide, benzoyl peroxide or ceric ammonium nitrate.
Described linking agent is ethylene glycol diacrylate, glycol methacrylate, a condensed ethandiol double methyl methacrylate, tirethylene glycol double methyl methacrylate, polyoxyethylene glycol double methyl methacrylate, N,N methylene bis acrylamide, glycerol diacrylate or pentaerythritol triacrylate.
Described dispersion agent is tween, sodium laurylsulfonate, Sodium dodecylbenzene sulfonate, sodium lauryl sulphate, polyglycerol fatty acid ester, OP series, sapn series, quaternary ammonium salt or polyvinyl alcohol.
In described and the time alkali used be NaOH, KOH or ammoniacal liquor.
Preferred forms
The present invention is done the detailed assorted explanation in a step below in conjunction with embodiment.
Embodiment 1
Preparation process
In having the container of stirring, add 15% (weight ratio) W-Gum, 20% water is at 85 ℃ of following gelatinization 1h, add 62% vinylformic acid, 0.2% ceric ammonium nitrate, 0.1%N during gelatinization postcooling to 70 ℃, N-methylene-bisacrylamide, 0.2% polyglycerol fatty acid ester are at N
2React 1.5h under the gas shiled under 70 ℃ of conditions, the reaction back is neutralized to pH7.5 with 20% KOH solution, makes anti-drought water-retaining agent after vacuum-drying, pulverizing.
Performance test
The testing method of water absorbing properties is as follows: take by weighing the dry resin of about 0.1 gram, put into the flask of 500ml, add the water of 150ml, place the unabsorbed moisture of nylon strap elimination after half an hour under the room temperature, calculate the suction multiple by following expression formula.Measure when inhaling the salt solution multiple, need dry resin is put into the 0.9wt%NaCL aqueous solution, determination step is the same.
Inhale (salt) water multiple Q (g/g)=(the initial water yield that adds-leach the water yield)/dried resin weight
It is 780 times that embodiment 1 usefulness aforesaid method records the suction multiple, inhales 45 times of salt solution multiples.
Embodiment 2
Add 24.5% W-Gum in having the container of stirring, 20% water is at 75 ℃ of following gelatinization 1.5h, 40% vinylformic acid, 15% acrylamide, and other is with embodiment 1.The suction multiple of prepared anti-drought water-retaining agent is 750 times, and inhaling the salt solution multiple is 42 times.
Embodiment 3
Add 31% W-Gum in having the container of stirring, 25% water is at 90 ℃ of following gelatinization 1h, adds 43% acrylamide, 0.6% ammonium persulphate, 0.3% ethylene glycol diacrylate during gelatinization postcooling to 70 ℃, and other is with embodiment 1.The suction multiple of prepared anti-drought water-retaining agent is 550 times, and inhaling the salt solution multiple is 38 times.
Embodiment 4
Adopt 17.5% konjaku instead of corn starch, other is with embodiment 1.The suction multiple of prepared anti-drought water-retaining agent is 806 times, and inhaling the salt solution multiple is 48 times.
Embodiment 5
Add 10% Rhizoma amorphophalli powder in having the container of stirring, 25% water is at 80 ℃ of following gelatinization 1h, adds 44% vinylformic acid and 20% acrylamide, 0.7% ammonium persulphate during gelatinization postcooling to 65 ℃, and other is with embodiment 1.The suction multiple of prepared anti-drought water-retaining agent is 582 times, and inhaling the salt solution multiple is 43 times.
Embodiment 6
Add 23.8% Rhizoma amorphophalli powder in having the container of stirring, 20% water is at 85 ℃ of following gelatinization 1.5h, adds 20% vinylformic acid and 35% acrylamide, 0.9% ammonium persulphate during gelatinization postcooling to 78 ℃, and other is with embodiment 1.The suction multiple of prepared anti-drought water-retaining agent is 723 times, and inhaling the salt solution multiple is 47 times.
Embodiment 7
In having the container of stirring, add 30% Rhizoma amorphophalli powder, 25% water is at 80 ℃ of following gelatinization 1.5h, adds 20% vinylformic acid and 34.5% acrylamide, 0.2% ceric ammonium nitrate during gelatinization postcooling to 70 ℃, 0.15%N, the N-methylene-bisacrylamide, other is with embodiment 1.The suction multiple of prepared anti-drought water-retaining agent is 561 times, and inhaling the salt solution multiple is 40 times.
Embodiment 8
Adopt 15% wheat starch, other is with embodiment 1.The suction multiple of prepared anti-drought water-retaining agent is 562 times, and inhaling the salt solution multiple is 36 times.
Embodiment 9
Other is with embodiment 1, and the reaction back is neutralized to pH7.5 with ammoniacal liquor, and the suction multiple that makes anti-drought water-retaining agent after vacuum-drying, pulverizing is 760 times, and inhaling the salt solution multiple is 46 times.
Claims (7)
1. the preparation method of an anti-drought water-retaining agent, it is characterized in that: in having the container of stirring, add 10-30% (weight ratio) starch and 15-25% water at 80-100 ℃ of following gelatinization 0.5-1h, the gelatinization postcooling adds 40-70% unsaturated vinyl monomer, 0.1-0.8% initiator, 0.1-2% dispersion agent and 0.05-0.6% linking agent during to 30-80 ℃, at N
2React 0.5-3.5h under the gas shiled under 30-80 ℃ of condition, the reaction back is neutralized to pH6.0-8.0 with alkali, makes anti-drought water-retaining agent after vacuum-drying, pulverizing.
2. the preparation method of anti-drought water-retaining agent according to claim 1, it is characterized in that: described starch can be W-Gum, Rhizoma amorphophalli powder, sweet potato starch, tapioca (flour), yam starch, wheat starch or Starch rice.
3. the preparation method of anti-drought water-retaining agent according to claim 1, it is characterized in that: described unsaturated vinyl monomer is vinylformic acid, acrylate, methacrylic acid, methacrylate, CALCIUM ACRYLATE, methacrylate, acrylamide, vinyl cyanide or their mixture.
4. the preparation method of anti-drought water-retaining agent according to claim 1, it is characterized in that: described initiator is potassium permanganate, Potassium Persulphate, ammonium persulphate, hydrogen peroxide, Diisopropyl azodicarboxylate, dicumyl peroxide, benzoyl peroxide or ceric ammonium nitrate.
5. the preparation method of anti-drought water-retaining agent according to claim 1, it is characterized in that: described linking agent is ethylene glycol diacrylate, glycol methacrylate, a condensed ethandiol double methyl methacrylate, tirethylene glycol double methyl methacrylate, polyoxyethylene glycol double methyl methacrylate, N,N methylene bis acrylamide, glycerol diacrylate or pentaerythritol triacrylate.
6. the preparation method of anti-drought water-retaining agent according to claim 1, it is characterized in that: described dispersion agent is tween, sodium laurylsulfonate, Sodium dodecylbenzene sulfonate, sodium lauryl sulphate, polyglycerol fatty acid ester, OP series, sapn series, quaternary ammonium salt or polyvinyl alcohol.
7. the preparation method of anti-drought water-retaining agent according to claim 1 is characterized in that: in described and the time alkali used be NaOH, KOH or ammoniacal liquor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011419245A CN1302033C (en) | 2001-09-24 | 2001-09-24 | Method for preparing anti-drought water-retaining agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011419245A CN1302033C (en) | 2001-09-24 | 2001-09-24 | Method for preparing anti-drought water-retaining agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1408741A true CN1408741A (en) | 2003-04-09 |
| CN1302033C CN1302033C (en) | 2007-02-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011419245A Expired - Fee Related CN1302033C (en) | 2001-09-24 | 2001-09-24 | Method for preparing anti-drought water-retaining agent |
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| CN (1) | CN1302033C (en) |
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