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Environmentally-friendly pesticide wetting dispersant, modified dispersant, and preparation method and application of pesticide wetting dispersant

A technology for wetting and dispersing agents and environmentally friendly pesticides, applied in the field of wetting and dispersing agents for environmentally friendly pesticides and its preparation, can solve problems such as short alkyl chains, no sulfonation of terminal hydroxyl groups, and inability to achieve particle surface anchoring

Inactive Publication Date: 2017-02-08
YANGZHOU SPED CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The alkyl chain of the obtained product is too short, which may not be able to achieve a good anchoring effect on the particle surface during the pesticide dispersion process
US6689731B2 (Evonik) discloses a straight chain, branched or cyclic alcohol containing 1-22 carbons as a starter, and after styrene oxide, ethylene oxide, propylene oxide, butylene oxide, and then Phosphate, if necessary, neutralize to obtain a phosphate emulsifying dispersant, which is applied to the dispersion of water-based phthalocyanine blue, iron oxide red and other pigments, but there is no sulfonation or sulfation of its terminal hydroxyl group, and it is used in the field of pesticide preparations application report

Method used

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  • Environmentally-friendly pesticide wetting dispersant, modified dispersant, and preparation method and application of pesticide wetting dispersant
  • Environmentally-friendly pesticide wetting dispersant, modified dispersant, and preparation method and application of pesticide wetting dispersant
  • Environmentally-friendly pesticide wetting dispersant, modified dispersant, and preparation method and application of pesticide wetting dispersant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] 30.4g (0.1mol) cardanol and 0.2g homogeneous gold complex AuL 1 (L 1 =PPh 3 Cl phosphine-containing ligand) is placed in the reactor. After carefully purging with ultrapure nitrogen, it was heated to 120° C., and 24.0 g (0.2 mol) of styrene oxide were added within 1 h. After reacting for 2 hours, the remaining residual styrene oxide content was determined by gas chromatography, which was less than 0.1 wt%. 44.0 g (1 mole) of ethylene oxide were metered into the reactor at a temperature not exceeding 130° C. and a pressure not exceeding 6 bar inside the reactor. After the addition of ethylene oxide is completed, the pressure change of the test reactor is used to indicate whether the reaction is completed or not. After the reaction is completed, the internal temperature of the reactor is maintained at 125°C. Finally, the temperature was lowered to 80°C to 90°C, and unreacted residual monomers were removed under reduced pressure. Neutralize with phosphoric acid, then ...

Embodiment 2

[0065] 14.4 g (0.1 mol) of isononanol and 0.35 g (0.005 mol) of potassium methoxide were placed in the reactor. After careful purging with ultrapure nitrogen, it was heated to 110° C. and 12.0 g (0.1 mol) of styrene oxide were added within 1 hour. After reacting for 2 hours, the remaining residual styrene oxide content was determined by gas chromatography, and it was less than 0.1 wt%. 35.0 g (0.8 mol) of ethylene oxide were metered into the reactor at a temperature not exceeding 120° C. and a pressure not exceeding 6 bar within the reactor. After the addition of ethylene oxide is completed, the pressure change of the test reactor is used to indicate whether the reaction is over. After the reaction is over, the internal temperature of the reactor is maintained at 115°C. Finally, purging with nitrogen gas, lowering the temperature to 80° C. to 90° C., and removing unreacted residual monomers under reduced pressure. Neutralize with phosphoric acid, then distill off water, and ...

Embodiment 3

[0068] 17.2g (0.1mol) decanoic acid and 0.2g boron trifluoride etherate complex BF 3 ·Et 2 O is placed in the reactor. After careful purging with ultrapure nitrogen, it was heated to 120° C. and 24.0 g (0.2 mol) of styrene oxide were added within 1 hour. After reacting for 2 hours, the remaining residual styrene oxide content was determined by gas chromatography, and it was less than 0.1 wt%. 39.6 g (0.9 mol) of ethylene oxide were metered into the reactor at a temperature not exceeding 130° C. and a pressure not exceeding 6 bar within the reactor. After the addition of ethylene oxide is completed, the pressure change of the test reactor is used to indicate whether the reaction is complete or not, and 11.6g (0.2 moles) of propylene oxide is continuously added to the reactor, and the temperature is lowered to 80°C- 90°C, remove unreacted residual monomers under reduced pressure. Recorded as PAO3.

[0069]Add the above-mentioned 0.1 mole of polyalkylene oxide PAO3 (hydroxyl...

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Abstract

The invention discloses a (modified) environmentally-friendly pesticide wetting dispersant, and a preparation method and an application thereof. A compound containing reactive hydrogen, used as an initial raw material, initiates ring-opening polymerization of styrene oxide under the action of a catalyst in order to obtain a reaction intermediate having a similar structure with nonylphenol or alkylphenol, and the reaction intermediate and ethylene oxide or epoxypropane or epoxybutane undergo ring-opening polymerization to obtain nonionic polyether. Compared with nonylphenol polyether or polyarylphenol ether, the nonionic polyether has the advantages of good biodegradability, and good safety to environment. The nonionic polyether and modification products thereof can be applied to pesticide emulsions in water, pesticide suspensions and other environmentally-friendly dosage forms, and have excellent emulsification dispersibility, storage stability and suspension dispersion stability as a nonylphenol polyether (NPE) or polystyrene phenol polyether substitute.

Description

technical field [0001] The invention relates to a dispersant, in particular to an environment-friendly pesticide wetting and dispersing agent and a preparation method thereof. Background technique [0002] Nonylphenol polyoxyethylene ether (NPE) is a nonionic surfactant with excellent performance. It is one of the commonly used surfactants in textile printing and dyeing auxiliaries and pesticide auxiliaries. Dissolving, foaming, dispersing, emulsifying and other properties, stable in a wide pH range and temperature range, strong resistance to hard water, compatible with anionic and cationic surfactants, is a nonionic surfactant with good performance . In the processing of pesticide suspensions, water emulsions, emulsifiable concentrates, and suspension seed coatings, nonylphenol polyoxyethylene ethers and their derivatives can be used as nonionic and anionic emulsifiers, wetting and dispersing agents, and penetrating agents for pesticides. Such as nonylphenol polyoxyethyle...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/28C08G65/334C08G65/335C08G65/332A01N25/04
CPCC08G65/2612A01N25/04C08G65/3322C08G65/3346C08G65/3353
Inventor 茅丹王磊余鹏程秦敦忠
Owner YANGZHOU SPED CHEM
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