一、 Basic features
Sp-df2238 is a comb type polycarboxylate polymer dispersant prepared by controlled polymerization technology, Sp-2238 can be adsorbed on the surface of pesticide particles under the action of dispersion force and hydrogen bond. Carboxylate provides good dispersion of coated particles in water, while the steric hindrance of long carbon chain maintains the long-term stability of particle dispersion. The special hydrophobic groups and their ratios of SP-DF2238 increase the rigidity of dispersants, and enhance the adsorption stability of dispersants to particles in the process of high temperature spray.
二、 Typical data
Yellow liquid appearance: transparent liquid
PH (1% aqueous solution, 25 ℃): 7.0
Nonvolatile: 30%
Solubility in water: soluble in water, insoluble in organic solvents
Closed flash point (℃): > 100
三、 Application characteristics
Sp-df2238 is a polymer dispersant with special lipophilic group and certain rigidity. It has strong lipophilic property, good adaptability to high content of lipophilic pesticides and low melting point pesticides. It has good resistance to hard water and good dispersibility at different temperatures. The product itself does not have viscosity and will not make the preparation harden.
When sp-df2238 was applied to 75% tebuconazole · carbendazim DF, pyraclostrobin and their compound DF, the coating property of the preparation was better, the temperature resistance of the preparation was significantly improved, the non dispersion of the preparation caused by melting of the technical drug was reduced, and the wet sieve passing rate was increased;
Sp-df2238 is also suitable for high content DF preparation with good dispersing effect, such as 90% atrazine DF, 90% chlorothalonil DF, 90% diuron DF, 90% methyltropine DF, etc., which can solve the problem of insufficient space for common dispersant.
四、 Packaging, storage and transportation
This product is packed in plastic barrel, net content is 200kg / barrel. Store in a cool, ventilated and dry place. Transport as non hazardous chemicals.
五、 Product shelf life
The shelf life of this product is two years. After two years, it can still be used.
六、 Application examples
| Name of preparation | Formulation | Preparation characteristics |
|---|---|---|
| 75% tebuconazole and carbendazim DF | SP-DF2238:30.0%,SP-DF2231Y:2.0%,SP-DF2292:1.0%,SP-DF2225:~100% | For the poor quality technical drug, it can be solved by adding sp-df2238 |
| 90% atrazine DF | SP-DF2238:20.0%,SP-DF2231Y:1.0%,SP-DF2292:0.5% | High concentration of DF represents that the dispersion of the preparation is good and the suspension rate is high when the space of auxiliary agent is small |
| 30% indoxacarb DF | SP-DF2238:30.0%,other ~100% | The technical drug is easy to transpose, the product is well dispersed and the suspension rate is high |
| 37% phenyl ether DF | SP-DF2238:30.0%,SP-DF2231Y:3.0%,SP-DF2292:1.0%,SP-DF2225: 10.0%+filler~100% | Low melting point technical powder DF represents that the suspension rate of the product into water is high, the wet sieve passing rate is high, and there are no dead particles. |
| 70% imidacloprid DF | SP-DF2238:10.0%,SP-DF2209:15.0%,SP-DF2292:1.0%,filler~100% | Nicotine is the representative of nicotine, the additive cost is low, and the wetting time of preparation in water is short. |
