CN1717975A - Film-forming agent for rice seed coating agent and preparation method thereof - Google Patents
Film-forming agent for rice seed coating agent and preparation method thereof Download PDFInfo
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- CN1717975A CN1717975A CN 200510042820 CN200510042820A CN1717975A CN 1717975 A CN1717975 A CN 1717975A CN 200510042820 CN200510042820 CN 200510042820 CN 200510042820 A CN200510042820 A CN 200510042820A CN 1717975 A CN1717975 A CN 1717975A
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- Prior art keywords
- water
- forming agent
- film forming
- agent
- seed coating
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- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 40
- 239000011248 coating agent Substances 0.000 title claims abstract description 18
- 235000007164 Oryza sativa Nutrition 0.000 title claims abstract description 15
- 235000009566 rice Nutrition 0.000 title claims abstract description 15
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 240000007594 Oryza sativa Species 0.000 title 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 44
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 17
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 17
- 241000209094 Oryza Species 0.000 claims abstract description 14
- 238000003756 stirring Methods 0.000 claims abstract description 14
- 239000007787 solid Substances 0.000 claims abstract description 11
- 239000002994 raw material Substances 0.000 claims abstract description 9
- 238000010438 heat treatment Methods 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims abstract description 7
- MSAVICZWFPQFPO-UHFFFAOYSA-N acetic acid;ethene Chemical group C=C.C=C.CC(O)=O MSAVICZWFPQFPO-UHFFFAOYSA-N 0.000 claims description 13
- 229920001038 ethylene copolymer Polymers 0.000 claims description 13
- 238000002156 mixing Methods 0.000 claims description 5
- 239000000839 emulsion Substances 0.000 abstract description 9
- 239000000203 mixture Substances 0.000 abstract description 9
- 230000035699 permeability Effects 0.000 abstract description 7
- 239000005038 ethylene vinyl acetate Substances 0.000 abstract description 3
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 abstract description 3
- 238000001816 cooling Methods 0.000 abstract 1
- 229920001577 copolymer Polymers 0.000 description 13
- 238000012360 testing method Methods 0.000 description 12
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 8
- 239000004698 Polyethylene Substances 0.000 description 8
- 238000013019 agitation Methods 0.000 description 8
- -1 polyethylene Polymers 0.000 description 8
- 229920000573 polyethylene Polymers 0.000 description 8
- 230000035784 germination Effects 0.000 description 6
- 230000007226 seed germination Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000035515 penetration Effects 0.000 description 5
- 238000005303 weighing Methods 0.000 description 4
- PYWVYCXTNDRMGF-UHFFFAOYSA-N rhodamine B Chemical compound [Cl-].C=12C=CC(=[N+](CC)CC)C=C2OC2=CC(N(CC)CC)=CC=C2C=1C1=CC=CC=C1C(O)=O PYWVYCXTNDRMGF-UHFFFAOYSA-N 0.000 description 3
- 238000001035 drying Methods 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 101500019086 Ustilago maydis P6 virus KP6 killer toxin subunit alpha Proteins 0.000 description 1
- ABUGVBRDFWGJRD-CHOYNLESSA-N [9-[(2r,3r,4s,5r)-3,4-dihydroxy-5-methyloxolan-2-yl]-2-(2,4-dinitrophenyl)sulfanylpurin-6-yl] [hydroxy(phosphonooxy)phosphoryl] hydrogen phosphate Chemical compound O[C@@H]1[C@H](O)[C@@H](C)O[C@H]1N1C2=NC(SC=3C(=CC(=CC=3)[N+]([O-])=O)[N+]([O-])=O)=NC(OP(O)(=O)OP(O)(=O)OP(O)(O)=O)=C2N=C1 ABUGVBRDFWGJRD-CHOYNLESSA-N 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 239000003905 agrochemical Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000005213 imbibition Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229940043267 rhodamine b Drugs 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Pretreatment Of Seeds And Plants (AREA)
Abstract
The invention discloses a film-forming agent for a rice seed coating agent, which comprises the following raw materials in percentage by mass: 7-9.9% of polyvinyl alcohol, 0.1-3% of ethylene-vinyl acetate copolymer and the balance of water, wherein the total amount of the raw materials is 100%. The preparation method comprises the steps of firstly adding polyvinyl alcohol into partial water under the heating condition to dissolve and stir, adding the ethylene-vinyl acetate copolymer emulsion during stirring, accelerating the stirring speed after the materials are uniformly mixed, slowly adding the rest water, then continuously stirring, heating the materials to 90-100 ℃, cooling to room temperature after the mixture is homogeneous liquid, and thus obtaining the seed coating agent film-forming agent with the solid content of 10%. The film-forming agent for the rice seed coating agent has a concentration of 3-5 ml/m2Water permeability of h and the ability to not be destroyed by water in water for 96 h.
Description
Technical field
The present invention relates to a kind of film forming agent of seed coating agent, relate in particular to and a kind ofly be used for film forming agent of rice seed coating agent and preparation method thereof with ethene-acetate ethylene copolymer and polyvinyl alcohol blending modification.
Background technology
Film forming agent is one of auxiliary agent important in the agent of agricultural chemicals kind clothing, is functional components crucial in the seed coating agent.Because the introducing of film forming agent makes that seed coating agent can be in the surface of the seed film forming, thereby but is different from formulations such as seed treatment dry powder doses, seed treatment dispersion powder, seed treatment liquor and seed treatment emulsion.The main effect of the film forming matter in the seed coating agent is active ingredient to be sticked to the surface of the seed and form uniform and smooth medicine film.Require film forming matter to have stronger resistance to water on the one hand, in the moisture soil with high, especially can not be ruined by water-soluble in the paddy field; Allow the required moisture of seed germination to pass through on the other hand.Most high molecular polymers all are to have outstanding characteristic in one aspect, are exactly conflicting character as water penetration and resistance to water, and they seldom embody in a kind of material simultaneously.Seed coating agent is normal at present uses a certain macromolecule filming thing separately, so be difficult to satisfy simultaneously above-mentioned requirements, this is one of principal element of restriction paddy field seed coating agent development.
The film forming of polyvinyl alcohol, swellability and water penetration are all fine, are to plant the film forming matter of generally selecting for use in the clothing agent at present.But its poor water resistance is ruined by water-soluble behind the seed pelleting easily, can not be used for paddy field or high humidity area separately.Ethene-vinyl acetate copolymer has very strong resistance to water, can only swelling in water, and not dissolved, moisture can not permeate.Ethene-vinyl acetate copolymer can not satisfy seeing through of the required moisture of seed sprouting as seed coating agent separately, so also be unfavorable.
Summary of the invention
At the problems referred to above, the object of the present invention is to provide film forming agent of a kind of rice seed coating agent that contains polyvinyl alcohol and ethene-vinyl acetate copolymer and preparation method thereof.This method has prepared a series of blend film with polyvinyl alcohol and ethene-vinyl acetate copolymer according to different proportion, in the hope of improving the water resistance of polyvinyl alcohol.Through the film forming agent of evidence rice seed coating agent of the present invention, its resistance to water is strong, and water penetration is suitable, can satisfy the requirement to film forming agent of rice seed soaking and seed sprouting.
Realize that foregoing invention purpose technical solution is: a kind of film forming agent that contains the rice seed coating agent of polyvinyl alcohol and ethene-vinyl acetate copolymer, it is characterized in that, this film forming agent contains the raw material of following mass percent: polyvinyl alcohol 7～9.9%, ethene-acetate ethylene copolymer 0.1～3%, all the other are water, and the summation of above-mentioned raw materials is 100%.
The preparation method of above-mentioned this method is, polyvinyl alcohol in will filling a prescription earlier under heating condition joins dissolving and stirring in the part water, add ethylene-vinyl acetate copolymer emulsion during stirring, after treating that above-mentioned mixing of materials evenly, accelerate mixing speed, and slowly add remaining water, continue to keep stirring subsequently and material is heated to 90 ℃～100 ℃, system to be mixed is cooled to room temperature after being homogeneous liquid, can make solid content and be 10% kind clothing agent film forming agent.
The present invention is a kind of compound formulation, and compared with prior art, its water permeability is at 3～5ml/m
2.h 96h is not ruined by water-soluble and in water.
Embodiment
Embodiment 1:0.1% ethene-vinyl acetate copolymer modified polyethylene alcohol film forming agent preparation
Take by weighing the 9.9kg polyvinyl alcohol, add in the 50L water, stirring, heating are dissolved it fully, under agitation add 0.2kg ethene-acetate ethylene copolymer emulsion (solute solid content 50%), mix, keep under agitation being heated to 100 ℃, after system to be stirred is homogeneous liquid, add water to total amount 100kg, be cooled to room temperature, promptly get and contain 0.1% ethene-vinyl acetate copolymer modified polyethylene alcohol film forming agent (solute solid content 10%).
Embodiment 2:1% ethene-vinyl acetate copolymer modified polyethylene alcohol film forming agent preparation
Take by weighing the 9.0kg polyvinyl alcohol, add in the 50L water, stirring, heating are dissolved it fully, under agitation add 2.0kg ethene-acetate ethylene copolymer emulsion (solute solid content 50%), mix, keep under agitation being heated to 100 ℃, after system to be stirred is homogeneous liquid, add water to total amount 100kg, be cooled to room temperature, promptly get and contain 1% ethene-vinyl acetate copolymer modified polyethylene alcohol film forming agent (solute solid content 10%.
Embodiment 3:2% ethene-vinyl acetate copolymer modified polyethylene alcohol film forming agent preparation
Take by weighing the 8.0kg polyvinyl alcohol, add in the 50L water, stirring, heating are dissolved it fully, under agitation add 4.0kg ethene-acetate ethylene copolymer emulsion (solute solid content 50%), mix, keep under agitation being heated to 100 ℃, after system to be stirred is homogeneous liquid, add water to total amount 100kg, be cooled to room temperature, promptly get and contain 2% ethene-vinyl acetate copolymer modified polyethylene alcohol film forming agent (solute solid content 10%).
Embodiment 4:3% ethene-vinyl acetate copolymer modified polyethylene alcohol film forming agent preparation
Take by weighing the 7.0kg polyvinyl alcohol, add in the 50L water, stirring, heating are dissolved it fully, under agitation add 6.0kg ethene-acetate ethylene copolymer emulsion (solute solid content 50%), mix, keep under agitation being heated to 100 ℃, after system to be stirred is homogeneous liquid, add water to total amount 100kg, be cooled to room temperature, promptly get 3% ethene-vinyl acetate copolymer modified polyethylene alcohol film forming agent (solute solid content 10%).
Test examples 1: film forming agent water penetration and Water Resistance Test
The film forming agent of above-mentioned preparation is being taken off behind the drying and forming-film on the poly fourfluoroplastics mould, be wrapped in the lower end of the L shaped glass-tube of horizontal positioned, in pipe, under the effect of water, pass imbibition, the permeable and molten phenomenon of ruining that takes place in various degree in time, express water-fast, the permeable character of film with this.
Sample number: the mass fraction according to ethene-acetate ethylene copolymer in the film forming agent is 0%, 0.5%, 1.0%, 1.5%, 2.0%, 2.5%, 3.0%, 3.5%, 4.0%, 4.5% and 5.0%, makes emulsion and is numbered vp0, vp5, vp10, vp15, vp20, vp25, vp30, vp35, vp40, vp45 and vp50 respectively;
Method: each component desciccator diaphragm is wrapped in the lower end of the L shaped glass tube of two open ends, injects the 3mL clear water from the upper end to glass tube, measures the infiltration zero-time of film, molten time and the final surplus water of ruining.Resistance to water with the infiltration zero-time and molten ruin the time and be evaluation index, waterproof and the insoluble sample of ruining is by the test termination time fully, the purposes of termination time according to film should be different to some extent, and the rice seed soaking time is 96h in this test, so the test termination time also is 96h; Water penetration P is calculated by following formula:
P=(3-surplus water/3) * 100%
Film forming agent water permeability result of the test is listed in table 1, each component film forming agent increases with polyvinyl alcohol content, its water permeable ability obviously improves, wherein the permeability rate of vp0, vp5, vp10, vp15, vp20, vp25 and vp30 is comparatively desirable, can satisfy the needs of seed germination, with seed germination result of the test basically identical.In permeable zero-time and molten observation of ruining the time, the permeable zero-time of each group raises according to ethene-acetate ethylene copolymer content and postpones, be respectively 0.2h (vp0), 0.25h (vp5), 0.5h (VP10), 0.75h (vp15), 1.2h (vp20), 2.5h (vp25), 3.5h (vp30) and＞6h (vp35～50).Each group is not all ruined by water-soluble in 96h except that vp0, illustrates that the introducing of ethene-acetate ethylene copolymer has significantly improved the resistance to water of system.
Table 1 film forming agent water permeability result of the test
| Sample | Permeability rate % | Sample | Permeability rate % |
| vp0 Vp5 Vp10 Vp15 Vp20 Vp25 | 100.00±0.00 a * 72.60±0.80 b 67.27±2.12 c 49.97±1.15 d 32.53±2.30 e 18.00±1.20 f | Vp30 Vp35 Vp40 Vp45 Vp50 | 14.00±1.40 g 5.60±0.30 h 0.66±0.14 i 0.30±0.06 j 0.00±0.00 k |
*: the mean value of same letter mark is difference not significantly (the multiple comparison method DMRT of Deng Kenshi) under 95% confidence limit, down with.
Test examples 2: film forming agent capsuled seed germination test
Each sample emulsion adding mass fraction is 5% basic rhodamine (Rhodamine B) do indication look, amount dressing rice paddy seed (seed need go awns before the dressing) with seed quality 3%, nature drying under the room temperature, if the 5% basic rhodamine aqueous solution is contrast, in diameter 12cm culture dish, be matrix with river sand, the cultivation of preserving moisture under 25 ℃, the record germination process calculates germination rate.
Rice seed germination result of the test (table 2) shows, it is less to the germination rate influence that the mass fraction of ethene-acetate ethylene copolymer is lower than each blend film of 3.0%, can be used as the film forming matter of seed pelleting.The mass fraction of ethene-acetate ethylene copolymer germinates greater than each component severe inhibition of 4.0%, does not all reach the germination standard to other sample statistics terminal points (7d).
Table 2 film forming agent influences result of the test to the rice seed germination rate
| Sample | Germination rate % | Sample | Germination rate % |
| ck vp0 Vp5 Vp10 Vp15 Vp20 | 94.00±1.00 a 95.67±0.58 a 95.33±1.15 a 94.67±0.58 a 91.67±1.15 a 85.00±8.72 b | Vp25 Vp30 Vp35 Vp40 Vp45 Vp50 | 86.67±8.33 b 90.00±3.61 b 7.00±3.00 c 4.00 d 0.00 d 0.00 d |
Claims (2)
1. film forming agent that is used for rice seed coating agent, it is characterized in that, this film forming agent contains the raw material of following mass percent: polyvinyl alcohol 7%～9.9%, ethene-acetate ethylene copolymer 0.1%～3%, and all the other are water, the summation of above-mentioned raw materials is 100%.
2. preparation method who is used for the film forming agent of rice seed coating agent, it is characterized in that, elder generation joins dissolving and stirring in the part water with the polyvinyl alcohol raw material of 7%～9.9% in the film forming agent mass percent prescription under heating condition, ethene-acetate ethylene copolymer the raw material of adding 0.1%～3% during stirring, after treating that above-mentioned mixing of materials evenly, accelerate mixing speed, and slowly add remaining water, making raw material quality summation is 100%, continue to keep stirring subsequently and material is heated to 90 ℃～100 ℃, system to be mixed is cooled to room temperature after being homogeneous liquid, can make solid content and be 10% kind clothing agent film forming agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100428208A CN1303864C (en) | 2005-06-16 | 2005-06-16 | Film-forming agent for rice seed coating agent and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100428208A CN1303864C (en) | 2005-06-16 | 2005-06-16 | Film-forming agent for rice seed coating agent and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1717975A true CN1717975A (en) | 2006-01-11 |
| CN1303864C CN1303864C (en) | 2007-03-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100428208A Expired - Fee Related CN1303864C (en) | 2005-06-16 | 2005-06-16 | Film-forming agent for rice seed coating agent and preparation method thereof |
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| Country | Link |
|---|---|
| CN (1) | CN1303864C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102660051A (en) * | 2012-04-20 | 2012-09-12 | 中国水稻研究所 | Adhesive of dry-powder rice seed coat and preparation method thereof |
| CN103392696A (en) * | 2013-06-30 | 2013-11-20 | 广东中迅农科股份有限公司 | Special slow release film-forming agent for suspension seed coating agent |
| WO2016055439A1 (en) * | 2014-10-07 | 2016-04-14 | Bayer Cropscience Aktiengesellschaft | Method for treating rice seed |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69836986T2 (en) * | 1998-12-14 | 2007-11-15 | Syngenta Participations Ag | INSECTICIDE SEED COVER |
| JP3816795B2 (en) * | 2001-12-03 | 2006-08-30 | 株式会社クラレ | Method for producing aqueous emulsion |
-
2005
- 2005-06-16 CN CNB2005100428208A patent/CN1303864C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102660051A (en) * | 2012-04-20 | 2012-09-12 | 中国水稻研究所 | Adhesive of dry-powder rice seed coat and preparation method thereof |
| CN102660051B (en) * | 2012-04-20 | 2014-05-07 | 中国水稻研究所 | Adhesive of dry-powder rice seed coat and preparation method thereof |
| CN103392696A (en) * | 2013-06-30 | 2013-11-20 | 广东中迅农科股份有限公司 | Special slow release film-forming agent for suspension seed coating agent |
| CN103392696B (en) * | 2013-06-30 | 2016-08-10 | 广东中迅农科股份有限公司 | The slowly-released film forming agent that a kind of suspension seed-coating agent is special |
| WO2016055439A1 (en) * | 2014-10-07 | 2016-04-14 | Bayer Cropscience Aktiengesellschaft | Method for treating rice seed |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1303864C (en) | 2007-03-14 |
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Granted publication date: 20070314 |