Dimethyl disulfide missible oil, preparation method of dimethyl disulfide missible oil, emulsion in water and capsule

A technology of dimethyl disulfide emulsifiable concentrate and dimethyl disulfide, which is applied in the fields of botanical equipment and methods, herbicides, algicides, biocides, etc., can solve the problem that dimethyl disulfide is not easy to emulsify and affects the control effect. , uneven distribution and other problems, to achieve the effect of not easy to stratify or break demulsification, good control effect, and protection of agricultural ecological environment

Active Publication Date: 2015-02-25
北京格林泰姆科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because dimethyl disulfide is insoluble in water, its disadvantage is that dimethyl disulfide is not easy to emulsify, and the formed emulsion is relatively thick, which is difficult to maintain stability for a long time
However, drip irrigation usually takes several hours. At this time, the emulsion is easily stratified or even broken, resulting in uneven distribution and affecting the control effect.

Method used

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  • Dimethyl disulfide missible oil, preparation method of dimethyl disulfide missible oil, emulsion in water and capsule
  • Dimethyl disulfide missible oil, preparation method of dimethyl disulfide missible oil, emulsion in water and capsule
  • Dimethyl disulfide missible oil, preparation method of dimethyl disulfide missible oil, emulsion in water and capsule

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Preparation of 1wt% dimethyl disulfide emulsifiable concentrate

[0039] 1) Weigh 1g of dimethyl disulfide, 14 grams of castor oil ethoxylate Emulsogen EL 360 (purchased from Clariant Chemicals (China) Co., Ltd.) and 6 grams of dodecylbenzenesulfonate compound Rhodacal 70B (France Rhodia Group) as emulsifier, take organic solvent methyl oleate and mend to 100 grams.

[0040] 2) After weighing the above raw materials, mix and stir dimethyl disulfide and methyl oleate in the preparation kettle evenly, heat to dissolve the emulsifier Emulsogen EL 360, then add it to the preparation kettle, and finally add the emulsifier Rhodacal 70B, fully stirred until transparent and uniform, that is, the finished dimethyl disulfide emulsifiable concentrate is obtained.

Embodiment 2

[0042] Preparation of 20wt% Dimethyl Disulfide EC

[0043] 1) Weigh 20g dimethyl disulfide, 10 grams of fatty alcohol ethoxylate Genapol X060 (Clariant Chemicals (China) Co., Ltd.) and 5 grams of dodecylbenzenesulfonate compound Phenylsulfonat CA (Clariant Chemicals ( China) Co., Ltd.) as an emulsifier, take by weighing 10 grams of Solvesso 150 as an organic solvent, and then take by weighing the solvent fatty acid methyl ester and replenish to 100 grams.

[0044] 2) Weigh each raw material according to the above weight, mix and stir dimethyl disulfide, solvent Solvesso 150 and fatty acid methyl ester in the preparation kettle evenly, add the weighed emulsifier Genapol X060 into the preparation kettle, and finally add Phenylsulfonat CA Thoroughly stir until transparent and homogeneous to obtain the finished emulsifiable concentrate containing dimethyl disulfide.

Embodiment 3

[0046] Preparation of 50% Dimethyl Disulfide EC

[0047] 1) Weigh 50g dimethyl disulfide, 12 grams of isomeric alcohol ethoxylate Lutensol TO7 (BASF (China) Co., Ltd.) and 4 grams of dodecylbenzenesulfonate compound Phenylsulfonat CA (Clariant Chemical Industry (China) ) Co., Ltd.) as an emulsifier, weigh the solvent Dowanol TM DPM (Dow Chemical (China) Co., Ltd.) supplemented to 100 grams.

[0048] 2) Weigh each raw material according to the above weight, mix dimethyl disulfide and solvent Dowanol TM DPM was mixed and stirred evenly in the preparation kettle, and the weighed Lutensol TO7 was added into the preparation kettle, and finally Phenylsulfonat CA was added, and stirred thoroughly until it was transparent and uniform, and the finished emulsifiable concentrate containing dimethyl disulfide was obtained.

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Abstract

The invention discloses dimethyl disulfide missible oil, a preparation method of the dimethyl disulfide missible oil, an emulsion in water and a capsule. The dimethyl disulfide missible oil comprises, by mass, 1-90% of dimethyl disulfide, 10-20% of an emulsifier and 0-80% of an organic solvent. Through use of the emulsifier and the organic solvent in dimethyl disulfide, the problem that dimethyl disulfide is insoluble in water and is not emulsified easily to form coarse missible oil which is unstable in drip irrigation in the farmland. The dimethyl disulfide missible oil has the advantages of small particles, uniform particle distribution, difficult layering or demulsification, and long stabilization time, ensures prevention and control effects and is suitable for drip irrigation. The preparation method is free of an organic solvent and saves a cost. Because of high missible oil content, the dimethyl disulfide missible oil has good effects of preventing and controlling soil nematodes, soil borne pathogenic fungi, weed and underground insects.

Description

technical field [0001] The invention relates to the technical field of agricultural chemicals, in particular to a dimethyl disulfide emulsifiable concentrate, a preparation method thereof, an aqueous emulsion and a capsule. Background technique [0002] Dimethyl disulfide (alias dimethyl disulfide, dimethyl disulfide, dimethyl disulfide, DMDS, C 2 h 6 S 2 ) is a light yellow transparent liquid with a melting point of 84.72°C, a boiling point of 109.7°C, a relative density of 1.0625 (20 / 4°C), and a refractive index of 1.5259. It is insoluble in water and has a foul smell. Dimethyl disulfide is a sulfur-containing organic compound with a wide range of uses. It is used as an anti-corrosion and anti-coking agent for ethane cracking furnaces in petroleum technology, as a vulcanizing agent for gasoline hydrogenation catalysis, and as an inhibitor of hydrocracking in benzene nuclei dehydroxylation reactions. Agent; in the rubber industry, it can be used as solvent, regeneration ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N41/12A01N25/04A01N25/34A01P5/00A01P3/00A01P13/00
Inventor 刘垣
Owner 北京格林泰姆科技有限公司
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