20% DBNPA (2,2-dibromo-3-nitrilopropionamide) water-soluble liquor and preparation method thereof
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A water-soluble, liquid technology, applied in the field of 20% DBNPA water-soluble liquid and its preparation, to achieve the effects of low energy consumption, good stability and cost reduction
Active Publication Date: 2014-07-23
SHANGHAI KING LEE WATER TREATMENT TECH
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Problems solved by technology
[0005] The object of the present invention is to provide a kind of stable storage, lower cost 20%DBNP
Method used
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Embodiment 1
[0019] 1. Materials and methods
[0020] 1.1. Materials:
[0021] DBNPA technical product, white crystal, industrial product, content 99.5%, provided by Shanghai Qingli Water Treatment Technology Company.
[0022] Polyethylene glycol 200, polyethylene glycol 400, polyethylene glycol 600, and polyethylene glycol 2000 are all chemically pure, produced by Shanghai Lingfeng Chemical Reagent Co., Ltd.
[0023] Glycerin, analytically pure, produced by Shanghai Lingfeng Chemical Reagent Co., Ltd.
[0024] Erlenmeyer flasks, pipettes, medicine spoons.
[0025] Electronic balance, precision 0.1g,
[0026] 1.2. Method:
[0027] Weigh 4g, 8g, 10g, 12g and 16g of PEG200, PEG400, PEDG600 and PEG2000 respectively (accurate to 0.1g), then add 16g, 12g, 10g, 8g and 4g of water respectively, heat and stir in a water bath at 55-60°C, 20 g of PEG aqueous solutions with various molecular weights were prepared with mass percentages of 20%, 40%, 50%, 60% and 80%, respectively. Then add 5g of ...
Embodiment 2
[0046] Preparation of 20% DBNPA water-soluble liquid:
[0047] According to the proportioning ratio of 20% DBNPA water-soluble liquid, add the polyethylene glycol 400 of 40%, 10% glycerin, 30% water and 20% DBNPA successively in mass percent, heat in a water bath at 55-60°C and Stir evenly and naturally cool to 10° C. to obtain the 20% DBNPA water-soluble liquid. The water-soluble liquid is a clear and transparent liquid in a stable state at 10°C.
[0048] The obtained 20% DBNPA water-soluble liquid was frozen and stored at -20° C. for 48 hours, and the frozen water-soluble liquid was still a clear liquid with good stability.
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Abstract
The invention discloses 20% DBNPA (2,2-dibromo-3-nitrilopropionamide) water-soluble liquor and a preparation method thereof. According to the method, PEG (polyethylene glycol) with different molecular weights and different proportions and additive cosolvent are selected as main composition parts, and a proportion meeting the preparation requirement is selected by comparing dissolving conditions of quantitative DBNPA under different formulae; comparison results indicate that an optimal formula of the 20% DBNPA water-soluble liquor capable of meeting the performance requirement of the water-soluble liquor can be obtained by selecting the proportion of 40 percent by mass of PEG 400, 10 percent by mass of glycerinum, 20 percent by mass of DBNPA and 30 percent by mass of water. The 20% DBNPA water-soluble liquor is good in stability and low in cost, even solid or precipitate cannot be separated when storage and transportation are performed in an environment of minus 20 DEG C, and the performance of the liquor is remained even if the liquor is restored to the original state after being frozen and cured.
Description
technical field [0001] The present invention relates to a kind of water-soluble liquid preparation that prevents the growth of bacteria and algae, etc., especially a kind of 20% DBNPA water-soluble liquid preparation and its preparation method Background technique [0002] DBNPA (2,2-Dibromo-3-Nitrilopropionamide), dibromonitrile acetamide, is a broad-spectrum and efficient industrial fungicide, and its mechanism of action is that the compound can quickly penetrate the cell membrane of microorganisms and act on certain The protein group stops the normal redox of the cell, thereby causing cell death; at the same time, its branch can also selectively brominate or oxidize the special enzyme metabolites of microorganisms, eventually leading to the death of microorganisms. Due to the advantages of high efficiency and broad spectrum, easy degradation, no residual toxicity, and no pollution to the environment, the substance has been widely used in papermaking, industrial circulatin...
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