CN1331983C - Water absorbing and preserving polymer soil protecting net film spray agent and its preparation - Google Patents
Water absorbing and preserving polymer soil protecting net film spray agent and its preparation Download PDFInfo
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- CN1331983C CN1331983C CNB2004100262369A CN200410026236A CN1331983C CN 1331983 C CN1331983 C CN 1331983C CN B2004100262369 A CNB2004100262369 A CN B2004100262369A CN 200410026236 A CN200410026236 A CN 200410026236A CN 1331983 C CN1331983 C CN 1331983C
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- water
- absorbing
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- nethike embrane
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- 239000002689 soil Substances 0.000 title claims abstract description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 239000007921 spray Substances 0.000 title claims abstract description 19
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 229920000642 polymer Polymers 0.000 title claims abstract description 8
- 239000003795 chemical substances by application Substances 0.000 title claims description 8
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 12
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 11
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- NIXOWILDQLNWCW-UHFFFAOYSA-N Acrylic acid Chemical compound OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 9
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 239000003999 initiator Substances 0.000 claims description 5
- LRWZZZWJMFNZIK-UHFFFAOYSA-N 2-chloro-3-methyloxirane Chemical compound CC1OC1Cl LRWZZZWJMFNZIK-UHFFFAOYSA-N 0.000 claims description 4
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 4
- 229920002153 Hydroxypropyl cellulose Polymers 0.000 claims description 3
- 229920002125 Sokalan® Polymers 0.000 claims description 3
- 229920006322 acrylamide copolymer Polymers 0.000 claims description 3
- 229910021538 borax Inorganic materials 0.000 claims description 3
- 239000001863 hydroxypropyl cellulose Substances 0.000 claims description 3
- 235000010977 hydroxypropyl cellulose Nutrition 0.000 claims description 3
- 239000004584 polyacrylic acid Substances 0.000 claims description 3
- 229940047670 sodium acrylate Drugs 0.000 claims description 3
- 239000004328 sodium tetraborate Substances 0.000 claims description 3
- 235000010339 sodium tetraborate Nutrition 0.000 claims description 3
- 229920001577 copolymer Polymers 0.000 claims description 2
- 235000011187 glycerol Nutrition 0.000 claims description 2
- 238000011175 product filtration Methods 0.000 claims description 2
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 claims description 2
- 239000006185 dispersion Substances 0.000 abstract description 5
- 239000004576 sand Substances 0.000 abstract description 5
- 239000000428 dust Substances 0.000 abstract description 4
- 229920002521 macromolecule Polymers 0.000 abstract description 4
- 238000004162 soil erosion Methods 0.000 abstract description 4
- 230000012010 growth Effects 0.000 abstract description 3
- 230000001681 protective effect Effects 0.000 abstract description 3
- 239000001913 cellulose Substances 0.000 abstract description 2
- 229920002678 cellulose Polymers 0.000 abstract description 2
- 229920000058 polyacrylate Polymers 0.000 abstract description 2
- 229920000881 Modified starch Polymers 0.000 abstract 1
- 239000004368 Modified starch Substances 0.000 abstract 1
- 238000012271 agricultural production Methods 0.000 abstract 1
- 239000000383 hazardous chemical Substances 0.000 abstract 1
- 239000003621 irrigation water Substances 0.000 abstract 1
- 235000019426 modified starch Nutrition 0.000 abstract 1
- 210000002747 omentum Anatomy 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 239000010408 film Substances 0.000 description 24
- 239000002362 mulch Substances 0.000 description 9
- 239000012528 membrane Substances 0.000 description 6
- 239000007788 liquid Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000000839 emulsion Substances 0.000 description 4
- 244000025254 Cannabis sativa Species 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000004159 Potassium persulphate Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000010426 asphalt Substances 0.000 description 2
- XMPZTFVPEKAKFH-UHFFFAOYSA-P ceric ammonium nitrate Chemical group [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 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- JRKICGRDRMAZLK-UHFFFAOYSA-L persulfate group Chemical group S(=O)(=O)([O-])OOS(=O)(=O)[O-] JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 description 2
- 235000019394 potassium persulphate Nutrition 0.000 description 2
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- 229920003169 water-soluble polymer Polymers 0.000 description 2
- 230000003245 working effect Effects 0.000 description 2
- PQUXFUBNSYCQAL-UHFFFAOYSA-N 1-(2,3-difluorophenyl)ethanone Chemical compound CC(=O)C1=CC=CC(F)=C1F PQUXFUBNSYCQAL-UHFFFAOYSA-N 0.000 description 1
- LCPVQAHEFVXVKT-UHFFFAOYSA-N 2-(2,4-difluorophenoxy)pyridin-3-amine Chemical compound NC1=CC=CN=C1OC1=CC=C(F)C=C1F LCPVQAHEFVXVKT-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- SXRSQZLOMIGNAQ-UHFFFAOYSA-N Glutaraldehyde Chemical compound O=CCCCC=O SXRSQZLOMIGNAQ-UHFFFAOYSA-N 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004902 Softening Agent Substances 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 235000014633 carbohydrates Nutrition 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 235000019219 chocolate Nutrition 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 125000001183 hydrocarbyl group Chemical group 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 230000002906 microbiologic effect Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920000344 molecularly imprinted polymer Polymers 0.000 description 1
- ZIUHHBKFKCYYJD-UHFFFAOYSA-N n,n'-methylenebisacrylamide Chemical compound C=CC(=O)NCNC(=O)C=C ZIUHHBKFKCYYJD-UHFFFAOYSA-N 0.000 description 1
- 231100000989 no adverse effect Toxicity 0.000 description 1
- 231100000957 no side effect Toxicity 0.000 description 1
- 230000032696 parturition Effects 0.000 description 1
- 230000008635 plant growth Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 235000019422 polyvinyl alcohol Nutrition 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Substances [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Landscapes
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Cultivation Of Plants (AREA)
Abstract
本发明涉及一种吸水保水高分子土壤保护网膜喷剂及其制备方法。本发明的吸水保水高分子土壤保护网膜喷剂是由水溶性高分子材料聚乙烯醇与聚丙烯酸盐、纤维素衍生物或改性淀粉在水中适度交联，制成具有网状结构的高分子水分散液，喷洒在土壤表面形成高分子网膜。该膜可吸纳雨水及灌溉水分、不影响作物破膜生长、无环境危害、表面干后又恢复保护膜的功能，可广泛用于节水农业生产、植树种草、水土流失治理和沙尘固定化等领域。The invention relates to a water-absorbing and water-retaining macromolecule soil protection omentum spray and a preparation method thereof. The water-absorbing and water-retaining macromolecule soil protection mesh spray of the present invention is made of water-soluble macromolecule material polyvinyl alcohol and polyacrylate, cellulose derivatives or modified starch moderately cross-linked in water to form a high Molecular water dispersion, sprayed on the soil surface to form a polymer mesh. The film can absorb rainwater and irrigation water, does not affect the growth of crops, has no environmental hazards, and the function of the protective film can be restored after the surface is dry. It can be widely used in water-saving agricultural production, tree planting, soil erosion control and sand and dust fixation chemical and other fields.
Description
Technical field
The present invention relates to a kind of water-absorbing-retaining polymeric soil protection nethike embrane spray and preparation method thereof; water-soluble high-molecular material such as polyacrylate, polyvinyl alcohol, derivatived cellulose or treated starch be the appropriately crosslinked environment-friendly type absorption and retaining soil moisture catch net film water dispersion liquid of making in water, can be widely used in water-saving agriculture, bringing soil erosion under control and sand and dust immobilization.
Background technology
Arid and desertification of land are serious natural disasteies.The use of agricultural mulching and liquid-state mulch film helps preserving soil moisture, heats.But a large amount of uses of plastic sheeting for farm use have caused white pollution, have had a strong impact on agriculture Sustainable development, become the significant problem that the whole world is paid close attention to, needed to be resolved hurrily.
Ghent, Belgium university cooperated with Labofina company in 1963, had developed agricultural emulsified bitumen (liquid ground film), was applied and made farm crop reach certain effect of increasing production in many countries subsequently; At the regional agricultural produce of planning, fix the sand, aspects such as grass planting, reinforcing road foundation have also brought into play vital role.The liquid-state mulch film main raw material is petrochemical complex deep processed product (pitch), and this material is by the long chain hydrocarbon groups molecular composition, has the intensive adhesive capacity after the emulsification, and the moisture film around the size of adhesive power and the grogs is inversely proportional to.When liquid-state mulch film is applied to arid soil, the many grogs of emulsion surface adhesion, and can expand to certain limit, and with the emulsion dehydration, form glued film, be fixed on grogs contact angle depths, grogs is coupled to the ideal coacervate.
Because character such as the hydrophobicity of pitch long chain hydrocarbon molecule are very strong, and intermolecular binding force is higher, and Molecularly Imprinted Polymer is little, make this class I liquid I mulch film not enough below the ubiquity aspect agricultural and environmental improvement: (1) is waterproof, makes the very fast evaporation of rainwater; (2) higher adhesion and physical strength hinder the growth of plant rupture of membranes; (3) pitch and various additive such as emulsifying agent, stablizer and softening agent etc. cause new environmental pollution; (4) lack general 40-60 days work-ing life; (5) the chocolate film influences printing opacity, also influences attractive in appearance.Wherein do not inhale, permeable, contain pollutant component, work-ing life, weak point was the critical defect that liquid ground film is used for environmental improvement and agricultural and forestry production.
For overcoming the emulsified bitumen liquid-state mulch film in agricultural and shortcoming field of environment protection; with the existing report of the novel liquid-state mulch film natural, that synthetic macromolecule is filmogen (Chinese patent application number 01130944; 02100581), but all unresolved soil of this class mulch film receives this key issue of rainwater.JP86-250085, USP87-4637759, patent reports such as USP87-4690589 utilize solubility polyvalent cation reaction in the water-soluble polymer water-sol and the soil to form the film technique of high-molecular gel, but film forming is under upper soll layer, does not have the effect of mulch film.
Summary of the invention
One of purpose of the present invention provides a kind of water-absorbing-retaining polymeric soil protection nethike embrane spray, and this water-absorbing-retaining polymeric soil protective membrane can be used for water-saving agriculture production, planting trees and grass, bringing soil erosion under control and sand and dust immobilization.
Another object of the present invention provides the preparation method of above-mentioned water-absorbing-retaining polymeric soil protection nethike embrane spray.A kind of water-absorbing-retaining polymeric soil protection nethike embrane spray is cross-linked into reticulated structure between the polymer, it comprises,
A) weight part is the water-soluble high-molecular material of 2-20, at least a polyacrylic acid, polypropylene salt, hydroxypropylcellulose, Sumstar 190, vinylformic acid and acrylamide copolymer, vinylformic acid and sodium acrylate copolymer, vinylformic acid and the polyvinyl alcohol copolymer of being selected from of water-soluble high-molecular material, all the other are weight percentage and are the polyvinyl alcohol of 20-80%;
B) weight part is the linking agent of 0.1-1;
C) weight part is the water of 100-200.
At least a glycerine, ethylene glycol, glutaraldehyde, the N of being selected from of above-mentioned linking agent, N '-methylene-bisacrylamide, epoxy chloropropane, tolylene diisocyanate or borax.
Also can contain the initiator that weight part is 0.001-0.5 in the above-mentioned water-absorbing-retaining polymeric soil protection nethike embrane spray, initiator is ceric ammonium nitrate, persulphate etc., persulphate such as Potassium Persulphate, Sodium Persulfate etc.
Also can contain weight part in the above-mentioned water-absorbing-retaining polymeric soil protection nethike embrane spray is 0.01-0.5 sodium hydroxide.
A kind of preparation method of water-absorbing-retaining polymeric soil protection nethike embrane spray:
A. water-soluble high-molecular material is dissolved in water;
B. at 20-30 ℃, stir adding linking agent, initiator down, 20-80 ℃ of reaction 2-6 hour;
C. product filtration, can.
The water-soluble high-molecular material that the present invention uses is meant and contains great amount of hydroxy group, carboxylate radical, amino, molecular-weight average is the water-soluble polymer of 20000-4000000, as polyacrylic acid (salt), polyvinyl alcohol, carboxymethyl cellulose, hydroxypropylcellulose, Sumstar 190, vinylformic acid and acrylamide copolymer, vinylformic acid and polyvinyl alcohol copolymer.Above-mentioned one or more high molecular solution are reacted to make in the presence of linking agent have cancellated polymer aqueous dispersions.Obtain water-absorbing-retaining polymeric soil protection nethike embrane emulsion after the filtration.According to the difference of concrete prescription, the weight percentage of polymer in aqueous dispersions is 1% to 15%.The aqueous dispersions of high density can suitably dilute before use, guarantees film forming homogeneity.
Water-absorbing-retaining polymeric soil protection nethike embrane spray of the present invention, suitably spray the dilution back, forms the polymeric membrane of one deck tens to nanometer thickness up to a hundred at soil surface.Used polymer contains a large amount of hydrophilic radicals such as hydroxyl, carboxylate radical, amino, meets water absorption and swelling behind the water, and this character is similar to super absorbent resin.Because the degree of crosslinking of nethike embrane is lower, thin film thickness, the space between the macromolecular chain of suction back is enough to greatly to being that water molecules passes through.Thereby having solved polymeric soil protects nethike embrane to receive the problem of rainwater and irrigation moisture.Along with the film surface-moisture slowly evaporates, the space between the macromolecular chain dwindles, the function of recovery and protection film again after doing.The thickness of polymeric soil protection nethike embrane has only 1/tens of common ground film, but water absorption and swelling in wet environment in addition, and the shadow crop rings the rupture of membranes growth.The nethike embrane of the crosslinked generation of polymer has suppressed the osmosis of isolated molecule to soil capillary and slit, and the film forming utilization ratio is increased, and materials reduce, and use cost reduces.This film except that having mulch film water conservation heat insulation function, its outstanding advantage be receive rainwater and irrigate moisture, the shadow crop ring rupture of membranes growth, the harm of no environment, surface dried after the function of recovery and protection film again.This rainwater, water conservation (moisture in the soil) the polymeric soil protective membrane of receiving can be used for fields such as water-saving agriculture production, planting trees and grass, bringing soil erosion under control and sand and dust immobilization.Water-absorbing-retaining polymeric soil protection nethike embrane emulsion of the present invention all has no side effect to human body, animal and plant, and nethike embrane is absorbed and used for the small molecules carbohydrate by microbiological deterioration in soil, has no adverse effect to giving birth to the body environment.Simultaneously, the preparation method of water-absorbing-retaining polymeric soil protection nethike embrane spray of the present invention is simple, is easy to suitability for industrialized production.
Embodiment
Embodiment 1
Polyvinyl alcohol (molecular weight 80,000) 1 weight part,
Vinylformic acid 1 weight part,
Sodium acrylate 1 weight part,
N, N '-methylene-bisacrylamide 0.1 weight part,
Potassium Persulphate 0.1 weight part,
Water 100 weight parts.
Embodiment 2
Sumstar 190 3 weight parts
Polyvinyl alcohol 2 weight parts
Epoxy chloropropane 0.4 weight part
Sodium hydroxide 0.2 weight part
Water 100 weight parts.
Embodiment 3
Sumstar 190 8 weight parts,
Polyvinyl alcohol 2 weight parts,
Borax 0.2 weight part,
Sodium hydroxide 0.3 weight part,
Water 200 weight parts.
Embodiment 4
Prescription with embodiment 2 is an example, and the technological process of preparation water-absorbing-retaining polymeric soil protection nethike embrane spray is as follows:
1. Sumstar 190 adds water and stirs and to be modulated into 8% suspension, is heated to complete gelatinization;
2. polyvinyl alcohol adds water and stirs and to be modulated into 8% suspension, 80 ℃ of dissolvings;
3. will be 1. and 2. liquid mixing, under 25 ℃ of stirrings, drip epoxy chloropropane;
4. regulate pH to 9-10 with 10% sodium hydroxide solution, add the required water of prescription, under 50 ℃ of stirrings, continue reaction 5 hours;
5. filtration, can.
Claims (4)
1. a water-absorbing-retaining polymeric soil protection nethike embrane spray is cross-linked into reticulated structure between the polymer, and it comprises,
A) weight part is the water-soluble high-molecular material of 2-20, at least a polyacrylic acid, hydroxypropylcellulose, Sumstar 190, vinylformic acid and acrylamide copolymer, vinylformic acid and sodium acrylate copolymer, vinylformic acid and the polyvinyl alcohol copolymer of being selected from of water-soluble high-molecular material, all the other are weight percentage and are the polyvinyl alcohol of 20-80%;
B) weight part is the linking agent of 0.1-1, at least a glycerine, ethylene glycol, the N of being selected from of linking agent, N '-methylene-bisacrylamide, epoxy chloropropane, tolylene diisocyanate or borax;
C) weight part is the water of 100-200.
2. water-absorbing-retaining polymeric soil protection nethike embrane spray according to claim 1 is characterized in that also containing the initiator that weight part is 0.001-0.5.
3. water-absorbing-retaining polymeric soil protection nethike embrane spray according to claim 1 and 2 is characterized in that also containing the sodium hydroxide that weight part is 0.01-0.5.
4. the described a kind of water-absorbing-retaining polymeric soil of claim 1 is protected the preparation method of nethike embrane spray:
A. water-soluble high-molecular material is dissolved in water;
B. at 20-30 ℃, stir adding linking agent, initiator down, 20-80 ℃ was reacted 2-6 hour;
C. product filtration, can.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100262369A CN1331983C (en) | 2004-06-15 | 2004-06-15 | Water absorbing and preserving polymer soil protecting net film spray agent and its preparation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100262369A CN1331983C (en) | 2004-06-15 | 2004-06-15 | Water absorbing and preserving polymer soil protecting net film spray agent and its preparation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1583953A CN1583953A (en) | 2005-02-23 |
| CN1331983C true CN1331983C (en) | 2007-08-15 |
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| CNB2004100262369A Expired - Fee Related CN1331983C (en) | 2004-06-15 | 2004-06-15 | Water absorbing and preserving polymer soil protecting net film spray agent and its preparation |
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| JPS61250085A (en) * | 1985-04-30 | 1986-11-07 | Lion Corp | Method for treating soil |
| US4637759A (en) * | 1983-04-30 | 1987-01-20 | Lion Corporation | Method for forming a moisture barrier in a soil containing soluble salts |
| CN1332198A (en) * | 2001-08-28 | 2002-01-23 | 罗萌 | Multifunctional hydrolyzed mulching liquid and its compounding process |
| CN1356370A (en) * | 2001-11-30 | 2002-07-03 | 宁夏华西中天新材料有限公司 | Liquid-state rare-earth ground film |
| CN1405271A (en) * | 2001-09-19 | 2003-03-26 | 史启良 | Sand-dust covering agent |
| CN1445275A (en) * | 2002-04-22 | 2003-10-01 | 浙江省农业科学院土壤肥料研究所 | Preparation of polyvinyl alochol modifier-liquid ecological mulchine film |
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2004
- 2004-06-15 CN CNB2004100262369A patent/CN1331983C/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4637759A (en) * | 1983-04-30 | 1987-01-20 | Lion Corporation | Method for forming a moisture barrier in a soil containing soluble salts |
| JPS61250085A (en) * | 1985-04-30 | 1986-11-07 | Lion Corp | Method for treating soil |
| US4690589A (en) * | 1985-04-30 | 1987-09-01 | Lion Corporation | Method for forming a water-impermeable layer in a soil |
| CN1332198A (en) * | 2001-08-28 | 2002-01-23 | 罗萌 | Multifunctional hydrolyzed mulching liquid and its compounding process |
| CN1405271A (en) * | 2001-09-19 | 2003-03-26 | 史启良 | Sand-dust covering agent |
| CN1356370A (en) * | 2001-11-30 | 2002-07-03 | 宁夏华西中天新材料有限公司 | Liquid-state rare-earth ground film |
| CN1445275A (en) * | 2002-04-22 | 2003-10-01 | 浙江省农业科学院土壤肥料研究所 | Preparation of polyvinyl alochol modifier-liquid ecological mulchine film |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101591542B (en) * | 2008-05-29 | 2011-05-25 | 北京科净源科技股份有限公司 | Multifunctional compound surface environment remediation agent and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| CN1583953A (en) | 2005-02-23 |
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