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Aqueous emulsion of natural pyrethrum, and its prepn. method

A technology of natural pyrethrins and emulsion in water, which is applied in the direction of botany equipment and methods, insecticides, biocides, etc., can solve the problems of limited use, harm, and increase the insecticidal effect of pyrethrins, so as to improve the appearance and increase the insecticidal effect of pyrethrins. Insect activity, reducing toxicity and side effects

Inactive Publication Date: 2007-03-21
YUNNAN CHUANGSEN IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in order to increase the insecticidal effect of pyrethrins, compounds such as butanoic ether were added to the preparation to improve its insecticidal activity. These compounds are harmful to humans and the environment, and are restricted in developed countries and regions.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] 1) Weigh 1% of 50% pyrethrin technical material, 0.25% of limonene plant extract tangerine oil, 0.05% of rosemary, 1% of β-cyclodextrin, fully dissolve with 10% of co-solvent;

[0013] 2) Mix Tween 80 0.25% with non-ionic emulsifier 5202 or 2201 10%;

[0014] 3) Combine 1) and 2), add water until the pyrethrin content is 0.5%, fully stir under the condition that the stirring speed is greater than 2000 rpm and the pressure is greater than 1.5 MPa, and emulsify to obtain water containing 0.5% of the natural pyrethrin active ingredient emulsion.

Embodiment 2

[0016] 1) Weigh 6% of 50% pyrethrin technical material, 5% of limonene plant extract tangerine oil, 0.2% of rosemary, 10% of β-cyclodextrin, and fully dissolve with 10% of co-solvent;

[0017] 2) Mix Tween 80 1% with non-ionic emulsifier 5202 or 2201 20%;

[0018] 3) Combine 1) and 2), add water until the pyrethrin content is 3%, fully stir under the condition that the stirring speed is greater than 2000 rpm and the pressure is greater than 1.5 MPa, and emulsify to obtain a 3% aqueous emulsion containing natural pyrethrin active ingredients .

Embodiment 3

[0020] 1) Weigh 10% of 50% pyrethrin technical material, 10% of limonene plant extract tangerine oil, 0.4% of rosemary, 20% of β-cyclodextrin, fully dissolve with 10% of co-solvent;

[0021] 2) Mix Tween 80 2% with non-ionic emulsifier 5202 or 2201 30%;

[0022] 3) Combine 1) and 2), add water until the content of pyrethrins is 5%, fully stir under the condition that the stirring speed is greater than 2000 rpm and the pressure is greater than 1.5 MPa, and emulsify to obtain a 5% aqueous emulsion containing natural pyrethrin active ingredients .

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PUM

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Abstract

An aquatic emulsion of natural pynethrin for preventing and eliminating the indoor pests (fly, mosquito, etc) and agricultural pests (aphis, locust, etc) contains proportionally natural pyrethrin, limonene, rosemary, tween, beta-cyclodextrin, non-ionic emulsifier and co-solvent. It has very low toxin and almost no by-effect.

Description

technical field [0001] The invention relates to the technical field of insecticides, in particular to a natural pyrethrin water emulsion and a preparation method thereof. Background technique [0002] There are many kinds of natural pyrethrin insecticides. Among them, the pyrethrum aqueous emulsion has the effect of microcapsules due to the β-cyclodextrin added in the preparation process. The action of microcapsules slows down the insecticidal effect of pyrethrins, also known as pyrethrins. slow release agent. This brings advantages to insecticides such as: the stability of pyrethrins is enhanced, and the application range is wider. However, in order to increase the insecticidal effect of pyrethrins, compounds such as butanoic ether are added to the preparation to improve its insecticidal activity. However, these compounds are harmful to humans and the environment, and their use is restricted in developed countries and regions. Contents of the invention [0003] The obje...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N53/02A01N25/02A01P7/04
Inventor 王怀勇
Owner YUNNAN CHUANGSEN IND CO LTD
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