A kind of environment-friendly agricultural dispersant and preparation method thereof

A dispersant and environment-friendly technology, applied in the field of environment-friendly agricultural dispersants and their preparation, can solve problems such as unfriendly processes, and achieve the effects of good dispersion performance and simple process synthesis.

Active Publication Date: 2021-06-01
北京凯贝瑞农业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, due to the presence of water-insoluble monomers such as styrene in the polymerization process, solvents are generally used for synthesis at home and abroad, such as Huntsman's 2700, Solvay's T36, etc., and the process is not environmentally friendly.

Method used

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  • A kind of environment-friendly agricultural dispersant and preparation method thereof
  • A kind of environment-friendly agricultural dispersant and preparation method thereof
  • A kind of environment-friendly agricultural dispersant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] An environment-friendly agricultural dispersant, consisting of the following components in parts by weight: 66 parts of methacrylic acid, 16 parts of styrene, 17 parts of allyloxy hydroxypropyl sodium sulfonate, 5 parts of ammonium persulfate, hydrogen 31 parts of sodium oxide, 300 parts of water.

[0027] The preparation method of above-mentioned environment-friendly agricultural dispersant, concrete steps are as follows:

[0028] (1) 5g ammonium persulfate is poured into 7.5g water, is mixed with 40% initiator solution;

[0029] (2) Add 292.5g of water into the reaction kettle, then add 17g of sodium allyloxy hydroxypropyl sulfonate, 66g of methacrylic acid, and 16g of styrene in sequence, and start stirring at a stirring speed of 800 rpm;

[0030] (3) Airtight, heat up to 85°C;

[0031] (4) dripping initiator solution, the dropping time is 0.5h;

[0032] (5) After the dropwise addition, continue to keep the temperature and stir for 1h;

[0033] (6) Cool, add sodi...

Embodiment 2

[0037] An environment-friendly agricultural dispersant, consisting of the following components in parts by weight: 61 parts of maleic anhydride, 19 parts of styrene, 19.5 parts of allyloxy hydroxypropyl sodium sulfonate, 15 parts of ammonium persulfate, and 29 parts of ammonia water part, 250 parts of water.

[0038] The preparation method of above-mentioned environment-friendly agricultural dispersant, concrete steps are as follows:

[0039] (1) 15g ammonium persulfate is poured into 29g water, is mixed with 34% initiator solution;

[0040] (2) Add 221g of water into the reaction kettle, then add 19.5g sodium allyloxy hydroxypropyl sulfonate, 61g maleic anhydride, and 19g styrene in turn by weight, start stirring, and the stirring speed is 500 rpm;

[0041] (3) airtight and heat up to 95°C;

[0042] (4) dripping initiator solution, the dropping time is 3h;

[0043] (5) After the dropwise addition, continue to keep the temperature and stir for 1h;

[0044] (6) cooling, add...

Embodiment 3

[0048] An environment-friendly agricultural dispersant, consisting of the following components in parts by weight: 44 parts of acrylic acid, 27 parts of styrene, 28 parts of allyloxy hydroxypropyl sodium sulfonate, 10 parts of sodium persulfate, and 21 parts of sodium carbonate part, 200 parts of water.

[0049] The preparation method of above-mentioned environment-friendly agricultural dispersant, concrete steps are as follows:

[0050] (1) 10g sodium persulfate is poured into 23g water, is mixed with 30% initiator solution;

[0051] (2) Add 177g of water to the reaction kettle, then add 28g of allyloxy hydroxypropyl sodium sulfonate, 44g of acrylic acid, and 27g of styrene in turn by weight, start stirring, and the stirring speed is 1000 rpm;

[0052] (3) Airtight, heat up to 100°C;

[0053] (4) dripping initiator solution, the dropping time is 2h;

[0054] (5) After the dropwise addition, continue to keep the temperature and stir for 2h;

[0055] (6) Cool, add sodium ca...

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Abstract

The invention discloses an environment-friendly agricultural dispersant and a preparation method thereof, belonging to the technical field of agricultural adjuvants. An environment-friendly agricultural dispersant disclosed by the invention consists of the following components in parts by weight: 25-70 parts of acrylic monomers, 15-35 parts of styrene, 15 parts of allyloxy hydroxypropyl sodium sulfonate ~35 parts, 5-15 parts of initiator, 15-35 parts of alkali, 100-300 parts of water. The environment-friendly agricultural dispersant disclosed by the invention has a simple synthesis process, is green and environment-friendly, and has good dispersing performance.

Description

technical field [0001] The invention relates to the technical field of agricultural adjuvants, in particular to an environment-friendly agricultural dispersant and a preparation method thereof. Background technique [0002] At present, pesticide formulations are formulations that use water as the carrier, such as water suspension concentrates, water dispersible granules, and the like. These pesticide formulations are inseparable from dispersants. Because polyacrylic acid dispersant has the characteristics of adjustable monomer and molecular weight, it is the most widely used one with the best performance. [0003] However, due to the existence of water-insoluble monomers such as styrene in the polymerization process, solvents are generally used for synthesis at home and abroad, such as Huntsman's 2700, Solvay's T36, etc., and the process is not environmentally friendly. [0004] Therefore, it is an urgent problem for those skilled in the art to provide an environmentally f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/06C08F222/08C08F212/08C08F228/02A01N25/30
CPCA01N25/30C08F212/08C08F220/06C08F222/08C08F228/02
Inventor 李汉承
Owner 北京凯贝瑞农业科技有限公司
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