Environment-friendly mixed solvent used for pyrethroid pesticide preparation

A pesticide preparation and mixed solvent technology, applied in the fields of application, insecticide, biocide, etc., can solve the problems of unspecified stability index and narrow dissolution range, etc., and achieve improved solubility, good stability, and significant synergistic effect Effect

Active Publication Date: 2013-07-31
GAUNGXI TIANYUAN BIOCHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The patent reports that white oil is used instead of xylene as a solvent for pesticide emulsifiable concentrate preparations, but the effect of using white oil to dissolve pyrethroids in the research and development of pesticide preparations is not ideal, and white oil is suitable for other pesticides except pyrethroids. The solubility range of the ingredients is narrow, and the patent does not specify the stability index of the emulsifiable concentrate preparation system of pyrethroid pesticides with white oil as the solvent

Method used

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  • Environment-friendly mixed solvent used for pyrethroid pesticide preparation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Solvent sample 1: Weigh 5 kg of dimethyl carbonate and 95 kg of white oil respectively, and then stir evenly to obtain 100 kg of the mixed solvent of this example.

[0040] 3% beta-cypermethrin aqueous emulsion (sample 1)

[0041] The mass percentage of each component in the formula: 95% beta-cypermethrin technical: 3%, solvent sample 1 10%, fatty alcohol polyoxyethylene ether 3%, polycarboxylate 2%, ethylene glycol 3%, defoamer 0.05 %, make up to 100% with water.

[0042] The lambda-cypermethrin in the above example can also be replaced by the formulation products of cypermethrin, lambda-cyhalothrin, deltamethrin, esfenvalerate, cyperethrin and bifenthrin.

[0043] 3% beta-cypermethrin aqueous emulsion (control sample 1)

[0044]The mass percentage of each component in the formula: 95% beta-cypermethrin Technical: 3%, xylene 10%, fatty alcohol polyoxyethylene ether 3%, polycarboxylate 2%, ethylene glycol 3%, defoamer 0.05% , Make up to 100% with water.

[0045] For...

Embodiment 2

[0063] Solvent sample 2: Weigh 20 kg of dimethyl carbonate and 80 kg of white oil respectively, and then stir evenly to obtain 100 kg of the solvent composition of this example.

[0064] 2.5% bifenthrin microemulsion (sample 2)

[0065] The mass percentage of each component in the formula: 95% Bifenthrin Technical: 2.5%, solvent sample 50% (in this product, it is equivalent to adding 10% dimethyl carbonate, white oil 40%), alkyl aryl poly Oxypropylene polyoxyethylene ether 8%, polycarboxylate 7%, calcium dodecylbenzene sulfonate 2%, ethylene glycol 3%, defoamer 0.05%, water to make up to 100%.

[0066] The bifenthrin in the above example can also be replaced by the formulation products of lambda-cypermethrin, cypermethrin, lambda-cyhalothrin, deltamethrin, fenvalerate and fenvalerate.

[0067] 2.5% bifenthrin microemulsion (control sample 2)

[0068] The mass percentage of each component in the formula: 95% Bifenthrin Technical: 2.5%, xylene 40%, methanol 10%, alkylaryl poly...

Embodiment 3

[0087] Solvent sample 3: Weigh 40 kg of dimethyl carbonate and 60 kg of white oil respectively, and then stir evenly to obtain 100 kg of the solvent composition of this example.

[0088] 5% deltamethrin emulsifiable concentrate (sample 3)

[0089] Mass percentage of each component in the formula: 95% deltamethrin Technical: 5%, solvent sample 50% (equivalent to adding dimethyl carbonate 20%, white oil 30% in this product), nonylphenol polyoxygen Vinyl ether 6%, calcium dodecylbenzenesulfonate 4%, methyl oleate make up to 100%.

[0090] The deltamethrin in the above example can also be replaced by the formulation products of lambda-cypermethrin, cypermethrin, lambda-cyhalothrin, fenvalerate, fenvalerate, and bifenthrin.

[0091] 5% deltamethrin emulsifiable concentrate (control sample 3)

[0092] The mass percentage of each component in the formula: 95% deltamethrin Technical: 5%, xylene 50%, nonylphenol polyoxyethylene ether 6%, calcium dodecylbenzenesulfonate 4%, methanol t...

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Abstract

The invention discloses an environment-friendly mixed solvent used for a pyrethroid pesticide preparation. The mixed solvent is composed of dimethyl carbonate and white oil, wherein mass percent of dimethyl carbonate is 0.5-60%, the mass percent of white oil is 0.5-40%, and the rest parts are other components of the pesticide preparation. The mixed solvent is used in a pyrethroid pesticide, dissolubility of a pyrethroid active ingredient in the mixed solvent system is high, stability is good, and the mixed solvent has the advantages of safety, environmental friendliness, low cost and wide application. The mixed solvent is the best choice for substituting a solvent of the conventional pesticide preparation, such as methyl alcohol, dimethyl benzene and N,N-dimethylformamide. Dosage forms applicable to the pyrethroid pesticide can be missible oil, emulsion in water and microemulsion.

Description

technical field [0001] The invention relates to the technical field of pesticide solvents, in particular to an environmentally friendly mixed solvent for pyrethroid pesticide preparations. Background technique [0002] At present, organic solvents such as methanol, xylene and N,N-dimethylformamide are mainly used as solvents in the processing of pyrethroid pesticide preparations. The extensive use of these organic solvents has brought many problems. First of all, during the application of pesticide preparation products, organic solvents have relatively large residues in the control crops and the environment, posing a major threat to agricultural production safety and environmental safety. Secondly, the use of organic solvents methanol, xylene, toluene, and benzene as solvents to produce pesticide products has a lot of safety risks in the process of production and transportation. Solvents not only pose health threats to workers during production and application, but also beca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/02A01N25/04A01N53/08A01N37/38A01N53/06A01P7/04
Inventor 安峰明苏安安卢瑞李现玲
Owner GAUNGXI TIANYUAN BIOCHEM
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