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Oil suspension auxiliary agent as well as preparation method and application thereof

A suspension aid and solvent oil technology, applied in the field of pesticides, can solve the problems of preparation stratification, precipitation, physical instability, etc., and achieve the effects of high suspension rate, good thermal storage stability, and improved utilization.

Pending Publication Date: 2022-07-26
河北盛鹏化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the suspension liquid is dispersed in solvent oil with solid particles, which is a physically unstable system, which will lead to problems such as stratification and precipitation in the long-term storage of the preparation.

Method used

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  • Oil suspension auxiliary agent as well as preparation method and application thereof
  • Oil suspension auxiliary agent as well as preparation method and application thereof
  • Oil suspension auxiliary agent as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1 A kind of oil suspension aid and sulfonylurea herbicide

[0026] The present embodiment is the preparation process of oil suspension aid and sulfonylurea herbicide, and the specific preparation process is as follows:

[0027] 1. Preparation of oil suspension additives

[0028] According to the methyl oleate and corn oil in a volume ratio of 27:13, a mixture of methyl oleate and corn oil was prepared and used as solvent oil (marked as Y1) for later use.

[0029] Get 4kg nonylphenol polyoxyethylene ether NP-4, 10kg nonylphenol polyoxyethylene ether NP-6, 4kg nonylphenol polyoxyethylene ether NP-8 and 2kg emulsifier EL-20 and add in 30kg solvent oil Y1 , at 40°C at 1400 r / min for 1 h to obtain the oil suspension aid, which is marked as M1.

[0030] Second, the preparation of sulfonylurea herbicides

[0031] Get 2.13kg of magnesium-aluminum silicate and 1.07kg of organic bentonite to mix, to obtain 3.2kg of magnesium-aluminum silicate and organic bentonite m...

Embodiment 2～5

[0033] Examples 2-5 Oil Suspension Additives and Sulfonylurea Herbicides

[0034] Embodiments 2 to 5 are respectively a kind of oil suspending aid and sulfonylurea herbicides, and their steps are basically the same as those of embodiment 1, and the difference is only the difference in the amount of raw materials and process parameters, and the specific details are shown in Table 1:

[0035] List of various process parameters in Examples 2 to 5 of Table 1

[0036]

[0037] The contents of other parts of Examples 2 to 5 are the same as those of Example 1.

Embodiment 6

[0038] Embodiment 6 A kind of oil suspension aid and sulfenalazine insecticide

[0039] The present embodiment is the preparation process of oil suspension aid and sulfenalazine insecticide, and the specific preparation process is as follows:

[0040] 1. Preparation of oil suspension additives

[0041] According to the methyl oleate and corn oil in a volume ratio of 35:9, a mixture of methyl oleate and corn oil was prepared, which was used as a mineral oil (marked as Y6) for later use.

[0042] Get 2kg nonylphenol polyoxyethylene ether NP-4, 6kg nonylphenol polyoxyethylene ether NP-6, 10kg nonylphenol polyoxyethylene ether NP-8 and 2.6kg emulsifier EL-20 and add to 30kg solvent oil Y6 , stirring and mixing at 1400 r / min for 1 h at 40° C. to obtain an oil suspension aid, which is marked as M6.

[0043] 2. Preparation of sulfenalazine insecticide

[0044] Get 0.83kg magnesium aluminum silicate and mix with 2.07kg white carbon black, obtain 2.9kg magnesium aluminum silicate an...

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Abstract

The invention provides an oil suspension additive and a preparation method and application thereof, and belongs to the technical field of pesticides, the oil suspension additive is prepared by adding nonylphenol polyoxyethylene ether NP-4, nonylphenol polyoxyethylene ether NP-6, nonylphenol polyoxyethylene ether NP-8 and an emulsifier EL-20 into a sufficient amount of solvent oil, stirring and mixing; the obtained oil suspension additive can be used for preparing oil suspension preparations such as sulfonylurea herbicides, sulfoxaflor insecticide and pyrethrin insecticide. According to the invention, different nonylphenol polyoxyethylene ether and castor oil polyoxyethylene ether have different oleophylic group types, different hydrophilic group lengths and different HLB (Hydrophile-Lipophile Balance) values, different particles cannot be aggregated by utilizing steric hindrance among the emulsifier particles through mutual matching in a specific proportion, so that good dispersibility and emulsibility are maintained, and the stability of the emulsifier is improved. Physical phenomena such as unqualified emulsion stability, sedimentation and caking and bottoming in heat storage are effectively prevented.

Description

technical field [0001] The invention relates to the technical field of pesticides, in particular to an oil suspension aid and a preparation method and application thereof. Background technique [0002] Oil suspension aids are a class of oils that have been tested as synergists and do not pollute crops. As a dilution carrier, the oils themselves are required to have good adhesion, spreadability, and resistance to rain erosion. Oil suspension aids can disperse water-insoluble pesticide active ingredients in non-aqueous media (oils), relying on surfactants to form highly dispersed and stable suspension liquid pesticide formulations. The suspension liquid pesticide formulation can improve the pesticide efficacy, drug stability, safety and the like to different degrees. However, the suspension liquid is dispersed in the solvent oil by solid particles, which is a physically unstable system, which will lead to problems such as stratification and precipitation during the long-term ...

Claims

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Application Information

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IPC IPC(8): A01N25/04A01N47/36A01N53/08A01N43/08A01P7/04
CPCA01N25/04A01N47/36A01N53/00A01N43/08
Inventor 张立昭吴梅香佘攀聂辉马晓佳
Owner 河北盛鹏化工有限公司
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