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Special stabilizer for bispyribac-sodium and application thereof

A technology of bispyribac and stabilizer is applied in the field of pesticide formulations, which can solve the problems of shortening the efficacy period and reducing the control effect, and achieves the effects of improving stability, reducing use cost and ensuring use effect.

Inactive Publication Date: 2019-05-03
JINAN TIANBANG CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One is that bispyribac is easy to decompose in the preparation single agent and other compound systems, such as 20% bispyribac suspension concentrate, 28% quinclorac * bispyribac dispersible oil suspension, 30% benzyzil Sulfururon* bispyribac wettable powder has serious decomposition problems in the heat storage stability test and actual use, which shortens its drug effect period and reduces the control effect

Method used

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  • Special stabilizer for bispyribac-sodium and application thereof
  • Special stabilizer for bispyribac-sodium and application thereof
  • Special stabilizer for bispyribac-sodium and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Example 1: 28% quinclorac * bispyribac dispersible oil suspension

[0036] 1. First weigh 25 parts of quinclorac, 3 parts of bispyribac, 5 parts of calcium dodecylbenzenesulfonate (506#), 4.5 parts of castor oil polyoxyethylene ether (BY-110), 5 parts of nonane phenol polyoxyethylene ether (NP-7), 0.3 parts of organic bentonite, 0.5 parts of KH 2 PO 4 , 2 copies of K 2 HPO 4 , 0.6 parts of UV-531, 3 parts of calcium stearate, methyl oleate to make up to 100%. Cut it with a shearing machine for 30 minutes, and sand it with a sand mill until the D90 is less than 5 microns.

[0037] According to the test results after 14 days of thermal storage at 54°C:

[0038] Table 4 Test table of 28% quinclorac * bispyribac dispersible oil suspension supplemented with bispyribac special stabilizer

[0039] Test items

[0040] After heat storage stability test, the content of bispyribac after heat storage is 2.95%, the decomposition rate is 3.27%, and all indexes are wit...

Embodiment 2

[0041] Embodiment two: 20% bispyribac ether suspension concentrate

[0042] First, weigh 20 parts of bispyribac, 5 parts of tristyrylphenol polyoxyethylene ether sulfate, 1 part of sodium lauryl sulfate, 0.12 parts of xanthan gum, 1 part of magnesium aluminum silicate, 0.3 part of organosilane Foam agent, 0.2 parts of Cathone, 5 parts of ethylene glycol, 1 part of KH2PO4, 2.5 parts of K2HPO4, 0.6 parts of UV-531, 4 parts of calcium stearate, and purified water to make up to 100%. Cut with a shearing machine for 30 minutes, and sand with a sand mill until D90≤4μm.

[0043] After 14 days of thermal storage at 54°C, the test results are as follows:

[0044] Table 5 Test table for 20% bispyribac-feed suspension concentrate added with bispyribac-feed special stabilizer

[0045]

[0046]

[0047] After heat storage stability test, the content of bispyribac after heat storage is 19.8%, the decomposition rate is 2.46%, and other indexes are all within the qualified index range, ...

Embodiment 3

[0048] Example 3: 30% bensulfuron-methyl* bispyribac wettable powder

[0049] First weigh 18 parts of bispyribac, 12 parts of bensulfuron-methyl, 5 parts of methyl naphthalenesulfonate formaldehyde condensate, 1 part of sodium lauryl sulfate, 5 parts of white carbon black, 1 part of KH 2 PO 4 , 3 copies of K 2 HPO 4 , 0.6 parts of UV-531, 4 parts of calcium stearate, and talcum powder to 100%. After stirring for 30 minutes, use a jet mill to pulverize until D90≤15 μm.

[0050] After 14 days of thermal storage at 54°C, the test results are as follows:

[0051] Table 6 Test table of 30% bensulfuron-methyl* bispyribac wettable powder added with special stabilizer for bispyribac

[0052] Test items

[0053] After heat storage stability test, the content of bispyribac after heat storage is 19.6%, the decomposition rate is 2.48%, and other indexes are all within the qualified index range, so it is a qualified product.

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Abstract

The invention belongs to the field of pesticide preparation and relates to bispyribac-sodium, in particular to a special stabilizer for bispyribac-sodium. The special stabilizer comprises the following effective components in parts by weight: 1-20 parts of a PH regulator; 0.1-10 parts of a heat stabilizer, 0.1-10 parts of a light stabilizer, wherein that pH regulator is composed of KH2PO4 and K2HPO4, the mass ratio of KH2PO4 to K2HPO4 is 1:5-5:1, pH is in the range of 6.5-7.5. As compared with that prior art, advantages and positive effects of the present invention are that: the special stabilizer for bispyribac-sodium is provided, the invention solves the problems of high decomposition rate and instability when bispyribac-sodium or bispyribac-sodium and other active ingredients are mixedinto wettable powder, suspending agent, dispersible dispersible dispersible oil suspending agent and the like, further improves the stability in the bispyribac-sodium system environment, ensures the practical use effect of bispyribac-sodium and reduces the use cost.

Description

technical field [0001] The invention belongs to the field of pesticide preparations and relates to bispyribac, in particular to a special stabilizer for bispyribac. Background technique [0002] Bispyribac is a chemical substance that has a killing effect on weeds. It belongs to the pyrimidine salicylate herbicides, also known as bispyribac, and is a highly active acetolactate synthase (ALS) inhibitor. After its application, it can be quickly absorbed by the stems and leaves of weeds, and spread to the whole plant, inhibiting the growth of plant meristems, thereby killing weeds. The agent is highly effective, broad-spectrum, and extremely low dosage. It can effectively control barnyardgrass and other grass weeds in paddy fields, and also control most broad-leaved weeds, some sedge weeds and barnyardgrass resistant to other herbicides. Such as: barnyardgrass, paspalum, rice Lishihe, crabgrass, bentgrass, kanmai, northeast sweetgrass, wolfba grass, special-shaped sedge, sunsh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N43/54A01N25/22A01P13/00
Inventor 丁绍武张鹏邢超峰武步华党钊
Owner JINAN TIANBANG CHEM
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