CN104996419A - Polycarboxylate dispersing agent special for pesticide suspension concentrate - Google Patents
Polycarboxylate dispersing agent special for pesticide suspension concentrate Download PDFInfo
- Publication number
- CN104996419A CN104996419A CN201510434668.1A CN201510434668A CN104996419A CN 104996419 A CN104996419 A CN 104996419A CN 201510434668 A CN201510434668 A CN 201510434668A CN 104996419 A CN104996419 A CN 104996419A
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- Prior art keywords
- methacrylic acid
- grams
- water
- accounts
- suspension concentrate
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- 239000002270 dispersing agent Substances 0.000 title claims abstract description 23
- 229920005646 polycarboxylate Polymers 0.000 title claims abstract description 18
- 239000000575 pesticide Substances 0.000 title claims abstract description 15
- 239000004546 suspension concentrate Substances 0.000 title claims abstract description 13
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000000178 monomer Substances 0.000 claims abstract description 14
- 239000003999 initiator Substances 0.000 claims abstract description 10
- 125000003118 aryl group Chemical group 0.000 claims abstract description 8
- 125000000623 heterocyclic group Chemical group 0.000 claims abstract description 8
- 239000000203 mixture Substances 0.000 claims abstract description 8
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 claims abstract description 7
- 239000000243 solution Substances 0.000 claims description 16
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- 150000003839 salts Chemical class 0.000 claims description 14
- 239000003795 chemical substances by application Substances 0.000 claims description 10
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical group [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Chemical compound [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 claims description 4
- 229920002818 (Hydroxyethyl)methacrylate Polymers 0.000 claims description 3
- WOBHKFSMXKNTIM-UHFFFAOYSA-N Hydroxyethyl methacrylate Chemical compound CC(=C)C(=O)OCCO WOBHKFSMXKNTIM-UHFFFAOYSA-N 0.000 claims description 3
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 3
- KGIGUEBEKRSTEW-UHFFFAOYSA-N 2-vinylpyridine Chemical compound C=CC1=CC=CC=N1 KGIGUEBEKRSTEW-UHFFFAOYSA-N 0.000 claims description 2
- DKIDEFUBRARXTE-UHFFFAOYSA-N 3-mercaptopropanoic acid Chemical compound OC(=O)CCS DKIDEFUBRARXTE-UHFFFAOYSA-N 0.000 claims description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Natural products C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 2
- 239000012153 distilled water Substances 0.000 claims description 2
- DNJIEGIFACGWOD-UHFFFAOYSA-N ethyl mercaptane Natural products CCS DNJIEGIFACGWOD-UHFFFAOYSA-N 0.000 claims description 2
- 238000009413 insulation Methods 0.000 claims description 2
- 239000011259 mixed solution Substances 0.000 claims description 2
- 229920000642 polymer Polymers 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
- 238000003756 stirring Methods 0.000 claims description 2
- 125000003011 styrenyl group Chemical group [H]\C(*)=C(/[H])C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 claims description 2
- 239000003643 water by type Substances 0.000 claims description 2
- DGVVWUTYPXICAM-UHFFFAOYSA-N β‐Mercaptoethanol Chemical group OCCS DGVVWUTYPXICAM-UHFFFAOYSA-N 0.000 claims description 2
- 239000000725 suspension Substances 0.000 abstract description 4
- 150000001336 alkenes Chemical class 0.000 abstract 2
- 239000012986 chain transfer agent Substances 0.000 abstract 2
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 abstract 2
- 239000006185 dispersion Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 239000007900 aqueous suspension Substances 0.000 description 2
- 239000012752 auxiliary agent Substances 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 208000035126 Facies Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical group N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 1
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 1
- 235000011130 ammonium sulphate Nutrition 0.000 description 1
- 239000013011 aqueous formulation Substances 0.000 description 1
- 239000013530 defoamer Substances 0.000 description 1
- 239000002552 dosage form Substances 0.000 description 1
- 230000000857 drug effect Effects 0.000 description 1
- -1 hydroxyl ethyl Chemical group 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000003002 pH adjusting agent Substances 0.000 description 1
- 230000000361 pesticidal effect Effects 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
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- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
A polycarboxylate dispersing agent special for pesticide suspension concentrate is characterized by being mainly prepared from methacrylic acid or a mixture of methacrylic acid and methacrylate, olefin monomer with aromatic rings or heterocyclic rings, chain transfer agent, initiator or water; the weight-average molecular weight of the polycarboxylate dispersing agent ranges from 5000 to 50000; according to the charge ratio, the methacrylic acid or the mixture of methacrylic acid and methacrylate accounts for 10-70%, the olefin monomer with aromatic rings or heterocyclic rings accounts for 20-50%, the chain transfer agent accounts for 1-2%, an initiator solution accounts for 0.5-1%, and the rest main part is water; the pH value of the dispersing agent ranges from 7 to 8. The polycarboxylate dispersing agent is high in suspension capacity and suspension stability.
Description
Technical field
The present invention relates to a kind of water soluble polycarboxylic acid dipersant, particularly relate to the polycarboxylate salt dispersant that a kind of pesticide suspension concentrate is special, suspending power is strong, and stability is good.
Technical background
Pesticidal aqueous suspension formulation by water insoluble solid pesticide active ingredient under the effect of the auxiliary agents such as wetting agent, dispersant, thickener, defoamer, stabilizing agent and pH adjusting agent, the stable dispersion formed through wet pulverizing in water.Aqueous dispersion is without organic solvent, and have good environment facies dissolubility, drug effect is high, and cost is low, and processing is simple.Show one's talent in aqueous formulation, there is huge development potentiality.Dispersant plays vital effect as the performance of main auxiliary agent to whole dosage form product of aqueous suspension formulation, polycarboxylate salt dispersant not only has a large amount of electric charges can produce powerful dispersibility by charge repulsion, and its structure has the group similar to former medicine structure, have strong suction-operated to pesticide original medicine, long-time absorption can be kept not come off, and is that dispersion keeps long-time stable.
Summary of the invention
Object of the present invention, is to provide a kind of polycarboxylate salt dispersant special for pesticide suspension concentrate, this polycarboxylate salt dispersant, and suspending power is strong, and suspension stability is good.
The technical scheme adopted is:
The polycarboxylate salt dispersant that pesticide suspension concentrate is special, is prepared into primarily of methacrylic acid or the mixture of methacrylic acid and methacrylate, olefinic monomer, chain-transferring agent, initiator solution or the water containing aromatic ring or heterocycle.Its weight average molecular weight is 5000-50000, its charge ratio is: the mixture of methacrylic acid or methacrylic acid and methacrylate accounts for 10-70%, the olefinic monomer of aromatic ring or heterocycle accounts for 20-50%, chain-transferring agent is mercaptoethanol or mercaptopropionic acid, and consumption accounts for 1-2%, and initator is ammonium sulfate, potassium peroxydisulfate or sodium peroxydisulfate, account for 0.5-1%, surplus is mainly water, and the pH value of this dispersant is 7-8.
The above-mentioned olefinic monomer containing aromatic ring or heterocycle is styrene, SSS, 2-vinylpyridine etc.
The charge ratio of methacrylic acid and methacrylate is 2:1-4:1
Preparation method of the present invention comprises the steps:
1, monomer solution is prepared:
In 1000 ml flasks, add 150 grams of distilled water, with oil bath heating, by methacrylic acid 100 grams, hydroxyethyl methacrylate 50 grams, chain-transferring agent 2 grams, SSS 50 grams, water 100 restrains into mixed solution, is monomer solution.
2, take ammonium persulfate 3 grams and add 50 ml waters dissolvings, make initiator solution;
3, in flask, 50 grams of SSSs are added when 150 grams, the water in flask is heated to 60 DEG C, stirring and dissolving, and continue heating, start when temperature reaches 85 DEG C to drip the monomer solution of step 1 preparation and the initiator solution of step 2 preparation, keep reaction temperature at 85-90 DEG C.Within 1 hour, dropwise, and insulation reaction 2 hours.Be cooled to 50 DEG C, it is 7-8 that the sodium hydroxide with 45% is neutralized to pH value, obtains the polymer solution of 40%.
The present invention is directed to the polycarboxylate salt dispersant that pesticide suspension concentrate is special, this polycarboxylate salt dispersant, suspending power is strong, and suspension stability is good.
Embodiment
Embodiment one
The polycarboxylate salt dispersant that a kind of pesticide suspension concentrate is special, mainly by methacrylic acid 50%, hydroxyethyl methacrylate 20%, hydroxyl ethyl ester 70%, SSS 20%, chain-transferring agent 1%, initiator solution 0.5% and surplus are that water is prepared into, and are 7-8 with the sodium hydroxide adjust pH of 45%.
Embodiment two
The polycarboxylate salt dispersant that pesticide suspension concentrate is special, is mainly that water is prepared into by methacrylic acid 50%, SSS 38%, chain-transferring agent 2%, initiator solution 1% and surplus, and is 7-8 with the sodium hydroxide adjust pH of 45%.
Embodiment three
The polycarboxylate salt dispersant that pesticide suspension concentrate is special, is mainly that water is prepared into by methacrylic acid 10%, SSS 50%, chain-transferring agent 0.8%, initiator solution 1.5% and surplus, and is 7-8 with the sodium hydroxide adjust pH of 45%.
Claims (3)
1. the polycarboxylate salt dispersant that pesticide suspension concentrate is special, is characterized in that: be prepared into primarily of methacrylic acid or the mixture of methacrylic acid and methacrylate, olefinic monomer, chain-transferring agent, initator or the water containing aromatic ring or heterocycle; Its weight average molecular weight is 5000-50000, charge ratio is: the mixture of methacrylic acid or methacrylic acid and methacrylate account for 10-70%, aromatic ring or heterocycle olefinic monomer accounts for 20-50%, chain-transferring agent accounts for 1-2%, initiator solution accounts for 0.5-1%, surplus is mainly water, and the pH value of this dispersant is 7-8.
2. the polycarboxylate salt dispersant that a kind of pesticide suspension concentrate according to claim 1 is special, is characterized in that: the above-mentioned olefinic monomer containing aromatic ring or heterocycle is styrene, SSS, 2-vinylpyridine;
Above-mentioned initator is ammonium persulfate, potassium peroxydisulfate or sodium peroxydisulfate;
Above-mentioned chain-transferring agent is mercaptoethanol or mercaptopropionic acid.
3. the polycarboxylate salt dispersant that a kind of pesticide suspension concentrate according to claim 1 is special, is characterized in that comprising the steps:
(1) monomer solution is prepared:
150 grams of distilled water are added in 1000 ml flasks, with oil bath heating, by methacrylic acid 150 grams, hydroxyethyl methacrylate 50 grams, chain-transferring agent 2 grams, SSS 50 grams, water 100 restrains into mixed solution, is monomer solution;
(2) take ammonium persulfate 3 grams and add 50 ml waters dissolvings, be prepared into initiator solution;
(3) be in flask, add 50 grams of SSSs, stirring and dissolving when gram water of 150 in flask is heated to 60 DEG C, and continue heating, start to drip monomer solution prepared by step 1 when temperature reaches 85 DEG C, keep reaction temperature at 85-90 DEG C; Within 1 hour, dropwise, and insulation reaction 2 hours; Be cooled to 50 DEG C, it is 7-8 that the sodium hydroxide with 45% is neutralized to pH value, obtains the polymer solution of 40%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510434668.1A CN104996419A (en) | 2015-07-23 | 2015-07-23 | Polycarboxylate dispersing agent special for pesticide suspension concentrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510434668.1A CN104996419A (en) | 2015-07-23 | 2015-07-23 | Polycarboxylate dispersing agent special for pesticide suspension concentrate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104996419A true CN104996419A (en) | 2015-10-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510434668.1A Pending CN104996419A (en) | 2015-07-23 | 2015-07-23 | Polycarboxylate dispersing agent special for pesticide suspension concentrate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104996419A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107410302A (en) * | 2017-08-14 | 2017-12-01 | 南京拓际生物科技有限公司 | Pesticide suspension concentrate dispersant special and preparation method thereof |
| CN110558314A (en) * | 2019-08-20 | 2019-12-13 | 南京拓际生物科技有限公司 | Polycarboxylate macromolecular aqueous suspending agent dispersant and preparation method thereof |
| CN111316984A (en) * | 2020-03-12 | 2020-06-23 | 惠乾科技(广东)有限公司 | Polycarboxylate dispersant and preparation method thereof |
| CN111449061A (en) * | 2020-04-16 | 2020-07-28 | 江苏凯元科技有限公司 | Polycarboxylate macromolecular aqueous suspending agent dispersant and preparation method thereof |
| CN114015061A (en) * | 2021-10-19 | 2022-02-08 | 东莞市长洲化工科技有限公司 | Comb-shaped polycarboxylate, synthesis method thereof and application thereof in preparation of dispersant |
| CN114605596A (en) * | 2020-12-08 | 2022-06-10 | 联泓(江苏)新材料研究院有限公司 | Polymer dispersant, preparation method and application thereof |
| CN115403692A (en) * | 2022-06-14 | 2022-11-29 | 上海启璇化工科技有限公司 | Powdery polycarboxylate polymer dispersant, and preparation method and application thereof |
| CN115449031A (en) * | 2022-10-17 | 2022-12-09 | 江苏塞特新材料科技有限公司 | A kind of preparation method of special dispersant for pesticide preparation with high content of tetravalent polycarboxylate |
Citations (4)
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|---|---|---|---|---|
| CN1350426A (en) * | 1999-04-12 | 2002-05-22 | 帝国化学工业公司 | Agrochemical for mulations |
| CN1430469A (en) * | 2000-05-26 | 2003-07-16 | 帝国化学工业公司 | Agrochemical suspension formulations |
| US20050148709A1 (en) * | 2001-12-22 | 2005-07-07 | Meyer Gerd R. | Solid plant-protective formulations |
| CN101323651A (en) * | 2008-07-24 | 2008-12-17 | 上海东升新材料有限公司 | Acrylic acid series polymer dispersants, preparation and use thereof |
-
2015
- 2015-07-23 CN CN201510434668.1A patent/CN104996419A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1350426A (en) * | 1999-04-12 | 2002-05-22 | 帝国化学工业公司 | Agrochemical for mulations |
| CN1430469A (en) * | 2000-05-26 | 2003-07-16 | 帝国化学工业公司 | Agrochemical suspension formulations |
| US20050148709A1 (en) * | 2001-12-22 | 2005-07-07 | Meyer Gerd R. | Solid plant-protective formulations |
| CN101323651A (en) * | 2008-07-24 | 2008-12-17 | 上海东升新材料有限公司 | Acrylic acid series polymer dispersants, preparation and use thereof |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107410302A (en) * | 2017-08-14 | 2017-12-01 | 南京拓际生物科技有限公司 | Pesticide suspension concentrate dispersant special and preparation method thereof |
| CN110558314A (en) * | 2019-08-20 | 2019-12-13 | 南京拓际生物科技有限公司 | Polycarboxylate macromolecular aqueous suspending agent dispersant and preparation method thereof |
| CN111316984A (en) * | 2020-03-12 | 2020-06-23 | 惠乾科技(广东)有限公司 | Polycarboxylate dispersant and preparation method thereof |
| CN111449061A (en) * | 2020-04-16 | 2020-07-28 | 江苏凯元科技有限公司 | Polycarboxylate macromolecular aqueous suspending agent dispersant and preparation method thereof |
| CN114605596A (en) * | 2020-12-08 | 2022-06-10 | 联泓(江苏)新材料研究院有限公司 | Polymer dispersant, preparation method and application thereof |
| CN114605596B (en) * | 2020-12-08 | 2024-04-09 | 联泓(江苏)新材料研究院有限公司 | Polymer dispersing agent and preparation method and application thereof |
| CN114015061A (en) * | 2021-10-19 | 2022-02-08 | 东莞市长洲化工科技有限公司 | Comb-shaped polycarboxylate, synthesis method thereof and application thereof in preparation of dispersant |
| CN115403692A (en) * | 2022-06-14 | 2022-11-29 | 上海启璇化工科技有限公司 | Powdery polycarboxylate polymer dispersant, and preparation method and application thereof |
| CN115403692B (en) * | 2022-06-14 | 2024-05-24 | 上海启璇化工科技有限公司 | Powdery polycarboxylate polymer dispersing agent and preparation method and application thereof |
| CN115449031A (en) * | 2022-10-17 | 2022-12-09 | 江苏塞特新材料科技有限公司 | A kind of preparation method of special dispersant for pesticide preparation with high content of tetravalent polycarboxylate |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151028 |
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| RJ01 | Rejection of invention patent application after publication |