Novel water-base suspending agent preparation technology for herbicide
A preparation process and suspending agent technology, applied in the field of new water-based suspending agent preparation technology, can solve the problems of increasing cost, reducing safety factor, environmental pollution, etc., achieving high safety factor, avoiding organic solvent pollution, and low processing cost. Effect
Active Publication Date: 2013-08-07
中科荣威生物药业(河北)集团有限公司
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Problems solved by technology
Because the addition of organic solvents in the process not only increases the cost, but also causes environmental pollution and reduces the safety factor
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[0015] A new water-based suspending agent preparation process for herbicides, the ratio of ingredients by weight of the suspending agent is: 3 parts of triethylamine, 25-40 parts of pendimethalin, 5-15 parts of emulsifier, white carbon 1-4 parts of black, 2-5 parts of xanthan gum, 40-60 parts of water, on this basis, the process includes:
[0016] a. Add triethylamine into the dispersion kettle equipped with pendimethalin, dissolve and stir for 0.2 to 1 hour to obtain the first solution;
[0017] b. Add the first solution, water and emulsifier into the high-speed simple cutting machine, and disperse for 0.8 to 1.5 hours to obtain the second solution;
[0018] c. Add the second solution into the sand mill, and circulate the sand mill for 2 to 5 hours to obtain the third solution;
[0019] d. Then add the third solution, white carbon black and xanthan gum into the dispersion kettle, and disperse for 0.5-2 hours to obtain the fourth solution;
[0020] e. Finally, filter the fou...
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The invention discloses a novel water-base suspending agent preparation technology for herbicide. The suspending agent comprises the ingredients in parts by weight: 3 parts of triethylamine, 25-40 parts of pendimethalin, 5-15 parts of emulsifying agent, 1-4 parts of white carbon black, 2-5 parts of xanthan gum and 40-60 parts of water. The technology comprises the steps of: a. adding the triethylamine into a dispersion kettle filled with the pendimethalin, dissolving and stirring for 0.2-1 hour to obtain a first solution; b. adding the first solution, the water and the emulsifying agent into a high-speed shearing machine, and dispersing for 0.8-1.5 hours to obtain a second solution; c. adding the second solution into a sand mill, and carrying out circulating sand milling for 2-5 hours to obtain a third solution; d. adding the third solution, the white carbon black and the xanthan gum into the dispersion kettle, and dispersing for 0.5-2 hours to obtain a fourth solution; and e. filtering the fourth solution to obtain the water-base suspending agent. According to the technology, organic solvents, such as dimethylbenzene and methanol are not needed, therefore, environment friendliness is facilitated, the production cost is low, and the usage safety coefficient is high.
Description
technical field [0001] The invention belongs to the field of herbicides and relates to a preparation process of a suspension, in particular to a preparation process of a novel water-based suspension of herbicides. Background technique [0002] "Pendivalate" is generally made into emulsifiable concentrates. If you want to make water-based suspension concentrates, there is a problem: the original medicine is easy to "cream" during the sanding process, so it is generally necessary to add xylene and methanol to it. And other organic solvents, formulated pendimethalin emulsifiable concentrate. Because the addition of organic solvents in the process not only increases the cost, but also causes environmental pollution and reduces the safety factor. Contents of the invention [0003] In order to overcome the deficiencies in the prior art, the present invention designs a novel water-based suspension concentrate preparation process for herbicides, so as to achieve the purposes of r...
Claims
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IPC IPC(8): A01N25/04A01N33/18A01P13/00
Inventor 王庆剑李娜
Owner 中科荣威生物药业(河北)集团有限公司