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2-methyl-4-chlorophenoxyacetic acid salt water-soluble granular preparation and preparation method thereof

A technology of dimethyltetrachloride and water-soluble granules, applied in the field of pesticides, can solve the problems of high requirements on formulation and preparation process, inability of photosynthesis to proceed normally, and long disintegration time of water-soluble granules, and achieves various requirements. Excellent indicators, lower drying costs and lower yields

Active Publication Date: 2015-06-17
SHANDONG WEIFANG RAINBOW CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Dimethyltetrachloride is a selective herbicide of dimethyltetrachloride and phenoxycarboxylic acid. It has strong systemic conductivity. It is mainly used for post-emergence stem and leaf treatment. The agent passes through the cuticle and cytoplasmic membrane, and finally conducts to Each part has different effects on nucleic acid and protein synthesis in different parts, and inhibits nucleic acid metabolism and protein synthesis at the top of the plant, so that the growth point stops growing, and the young leaves cannot be stretched until photosynthesis cannot be carried out normally; it is transmitted to the lower part of the plant The chemical agent increases the synthesis of nucleic acid and protein in the stem tissue of plants, promotes abnormal cell division, enlarges the root tip, loses the ability to absorb nutrients, causes the stem to be twisted and deformed, the sieve tube is blocked, the phloem is damaged, and the transportation of organic matter is blocked, thereby Destroys the normal viability of plants, eventually leading to plant death
However, there are no water-soluble granules of dimethyltetrachloride or dimethyltetrachloride salt. Analysis of the reasons shows that water-soluble granules have high requirements on the formulation and preparation process, and the selection of excipients must be compatible with the main drug, which is not appropriate. The WSG prepared by the excipients cannot achieve good solubility, resulting in long disintegration time and low suspension rate of the prepared water-soluble granules

Method used

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  • 2-methyl-4-chlorophenoxyacetic acid salt water-soluble granular preparation and preparation method thereof
  • 2-methyl-4-chlorophenoxyacetic acid salt water-soluble granular preparation and preparation method thereof
  • 2-methyl-4-chlorophenoxyacetic acid salt water-soluble granular preparation and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～12

[0045] The preparation of embodiment 1~12 dimethyl tetrachloride salt

[0046] In a 1L kneader with a heating device, put 400g of dimethyltetrachloride (purity 95%) and alkaline substances (purity greater than 99%) together, mix at normal temperature and pressure for 10min to 15min, and heat up To 45 ℃ ~ 55 ℃, react for 50min ~ 70min, to obtain dimethyl tetrachloride salt. Among them, the embodiment is set as follows:

[0047] Table 1 Examples 1-12

[0048]

Embodiment 13～47

[0049] Example 13-47 Preparation of Dimethyltetrachloropotassium Salt Soluble Granules

[0050] In a 1L kneader with a heating device, the dimethyltetrachloride salt prepared in Examples 1 to 12 is put into the kneader with surfactants and water-soluble fillers. °C drying to obtain dimethyl tetrachloride salt soluble granules.

[0051] Table 2 Preparation of Potassium Dimethyltetrachloride Salt Soluble Granules 13-17

[0052]

[0053] Table 3 Preparation of dimethyltetrachloride 89% water-soluble granules in Examples 18-23

[0054]

[0055] Table 4 Preparation of 24-29 dimethyltetrachloride 85% water-soluble granules

[0056]

[0057] Table 5 Preparation of 30-35 dimethyltetrachloride 75% water-soluble granules

[0058]

[0059] Table 6 Preparation of dimethyltetrachloride 65% water-soluble granules in Examples 36-41

[0060]

[0061] Table 7 Preparation of dimethyltetrachloride 50% water-soluble granules in Examples 42-47

[0062]

Embodiment 48

[0063] Example 48 Quality detection of water-soluble granules prepared by the present invention

[0064] The dimethyltetrachloride salt soluble granules provided by the invention are tested for quality, and the method provided in "Physicochemical Methods of Pesticides and Preparations——CIPAC Handbook" for detection is referred to, and the quality standard is referred to "FAO Pesticide Standard Formulation and Use Manual" ", specifically as shown in Table 8:

[0065] Table 8: Testing methods and standards for dimethyl tetrachloride salt soluble granules

[0066]

[0067] See Table 9 for the detection results of the dimethyltetrachloride salt soluble granules obtained in Examples 13-47.

[0068] Table 9 The quality identification results of the dimethyltetrachloride salt-soluble granules provided in Examples 13-47

[0069]

[0070] The results showed that the water-soluble granules prepared by this method had stable quality, low foaming property and close to neutral pH. ...

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Abstract

The invention relates to the technical field of pesticide and particularly relates to a 2-methyl-4-chlorophenoxyacetic acid salt water-soluble granular preparation and a preparation method thereof. The 2-methyl-4-chlorophenoxyacetic acid salt water-soluble granular preparation is prepared from 2-methyl-4-chlorophenoxyacetic acid salt, a surfactant and water-soluble filler. According to the 2-methyl-4-chlorophenoxyacetic acid salt preparation, by adjusting the selection and proportion of components, the suspended rate of the preparation can be improved and the disintegration time and foaming can be reduced. All the indexes of the product are excellent and the physicochemical property is stable. Experiments proved that the suspended rate of the 2-methyl-4-chlorophenoxyacetic acid salt water-soluble granular preparation is obviously higher than that of the existing products and the disintegration time is obviously lower than that of the existing products. According to the preparation method of the 2-methyl-4-chlorophenoxyacetic acid salt water-soluble granular preparation, the 2-methyl-4-chlorophenoxyacetic acid salt water-soluble granular preparation is directly prepared from the 2-methyl-4-chlorophenoxyacetic acid salt, surfactant and water-soluble filler through mixing granulation, the requirement on instruments and equipment can be lowered, the preparation technology is simplified, the preparation flows can be shortened, the energy consumption can be reduced, and the yield is improved.

Description

technical field [0001] The invention relates to the technical field of pesticides, in particular to a dimethyltetrachloride salt-soluble granule and a preparation method thereof. Background technique [0002] Dimethyltetrachloride is a selective herbicide of dimethyltetrachloride and phenoxycarboxylic acid. It has strong systemic conductivity. It is mainly used for post-emergence stem and leaf treatment. The agent passes through the cuticle and cytoplasmic membrane, and finally conducts to Each part has different effects on nucleic acid and protein synthesis in different parts, and inhibits nucleic acid metabolism and protein synthesis at the top of the plant, so that the growth point stops growing, and the young leaves cannot be stretched until photosynthesis cannot be carried out normally; it is transmitted to the lower part of the plant The chemical agent increases the synthesis of nucleic acid and protein in the stem tissue of plants, promotes abnormal cell division, enl...

Claims

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Application Information

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IPC IPC(8): A01N39/04A01N25/02A01N25/30A01P13/00
Inventor 孙国庆侯永生吴勇陈帅
Owner SHANDONG WEIFANG RAINBOW CHEM
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