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A kind of nitenpyram soluble liquid and preparation method thereof

A nitenpyram and soluble technology, applied in the field of nitenpyram soluble liquid preparation and preparation thereof, can solve the problems of poor efficacy, low content of nitenpyram, short storage period and the like, and achieves stable drug efficacy and moisture content. Low content and good low temperature stability

Active Publication Date: 2021-05-07
GUANGDONG XINJINGXIANG BIOLOGICAL ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the original drug of nitenpyram is easily decomposed in water. For example, the 10% nitenpyram water solution product, nitenpyram decomposes very quickly, and its content quickly drops to about 9% within three months after production. After one month, its content is about 6%, and after one year, its content will drop to about 2%. The storage period of 10% nitenpyram water formulation product is very short, and it will become a substandard product in three months. Nitenpyram The content is too low, the efficacy is poor

Method used

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  • A kind of nitenpyram soluble liquid and preparation method thereof
  • A kind of nitenpyram soluble liquid and preparation method thereof
  • A kind of nitenpyram soluble liquid and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Weigh the following raw materials by weight percentage: nitenpyram 10%, sorbitol glyceride 2.5%, water-based acrylic resin 2%, ethylene glycol remainder; nitenpyram is dissolved in formula amount 50% After the ethylene glycol, add sorbitol glyceride and the remaining amount of ethylene glycol in the formula, stir for 30 minutes, filter and let stand for defoaming for 24 hours, and subpackage after passing the test to obtain the nitenpyram soluble liquid.

[0022] (1) Product technical indicators: the technical indicators of the 10% nitenpyram soluble liquid are shown in Table 1.

[0023] Table 1 Control item indicators

[0024]

[0025] (2) Determination of Nitenpyram Mass Fraction by Liquid Chromatography

[0026] 1. Method summary

[0027] Dissolve the sample with mobile phase, use acetonitrile and water as the mobile phase, use a 200mm×4.6mm, C18 stainless steel chromatographic column filled inside, with a variable wavelength ultraviolet detector (270nm), to det...

Embodiment 2

[0086] Take the following raw materials by weight percentage: Nitenpyram 11%, sorbitol glyceride 6%, water-based acrylic resin 3%, ethylene glycol remainder; Nitenpyram is dissolved in formula amount 50% After the ethylene glycol, add sorbitol glyceride and the remaining amount of ethylene glycol in the formula, stir for 30 minutes, filter and let stand for defoaming for 24 hours, and subpackage after passing the test to obtain the nitenpyram soluble liquid.

[0087] In order to further illustrate the beneficial effects of the present invention, the present embodiment also detects the pH value, moisture content, miscibility with water, low temperature stability and heat storage stability of the product obtained in this embodiment according to the detection method of embodiment 1, parallel Test twice, take the arithmetic mean as the test result, the test results are as follows:

[0088] pH value Miscibility with water Moisture, % low temperature stability ther...

Embodiment 3

[0090] Take the following raw materials by weight percentage: Nitenpyram 10.5%, sorbitol glyceride 5%, water-based acrylic resin 2%, ethylene glycol remainder; Nitenpyram is dissolved in formula amount 50% After the ethylene glycol, add sorbitol glyceride and the remaining amount of ethylene glycol in the formula, stir for 30 minutes, filter and let stand for defoaming for 24 hours, and subpackage after passing the test to obtain the nitenpyram soluble liquid.

[0091] In order to further illustrate the beneficial effects of the present invention, the present embodiment also detects the pH value, moisture content, miscibility with water, low temperature stability and heat storage stability of the product obtained in this embodiment according to the detection method of embodiment 1, parallel Test twice, take the arithmetic mean as the test result, the test results are as follows:

[0092] pH value Miscibility with water Moisture, % low temperature stability th...

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Abstract

The invention discloses a nitenpyram soluble liquid and a preparation method thereof. The nitenpyram soluble liquid comprises the following raw materials in terms of weight percentage: 9-12% of nitenpyram, 1-10% of sorbitol glyceride, 0.5-5% of water-based acrylic resin, ethylene glycol quantity. The present invention uses ethylene glycol as a solvent, and adopts sorbitol glyceride and water-based acrylic resin as auxiliary agents to efficiently disperse nitenpyram in the solvent to form a homogeneous liquid; the moisture content of nitenpyram provided by the present invention The content is low, no more than 5%, good low-temperature stability and thermal storage stability, long storage validity period, good miscibility with water, stable drug effect; and the preparation process provided by the invention is simple, low cost and good benefit.

Description

technical field [0001] The invention relates to the technical field of pesticides, in particular to a nitenpyram soluble liquid and a preparation method thereof. Background technique [0002] Nitenpyram is a neonicotinoid insecticide with unique chemical and biological properties. It mainly acts on insect nerves and has nerve blocking effect on synaptic receptors of pests. It is used in crops such as rice and vegetables. It has shown excellent activity against various aphids, whiteflies, rice leafhoppers and thrips. It has high efficiency and low toxicity. , systemic and no cross-resistance, and it has a wide insecticidal spectrum and a long residual period (applied at 100mg / kg, sustainable for 15 days). For rice planthoppers, it is lethal at 0.5-0.8mg / kg. The rate can still reach 100%, and it is safe to use, and pests are not easy to produce antibodies. [0003] Since the original drug of nitenpyram is easily soluble in water, it is easy to be processed into an aqueous so...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N43/40A01N25/04A01P7/04
CPCA01N25/04A01N43/40
Inventor 黄番敏陈建华陈胤舟
Owner GUANGDONG XINJINGXIANG BIOLOGICAL ENG CO LTD