High-efficiency fungicide for papermaking white water

A paper-making white water and fungicide technology, applied in the direction of fungicides, biocides, biocides, etc., can solve the problems of product toxicity, antibacterial effect, cost of use, and the difficulty of adapting to the needs of the range of use and convenience

Inactive Publication Date: 2008-05-07
广东迪美生物技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, various antiseptic and fungicide products commonly used in papermaking white water are still difficult

Method used

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  • High-efficiency fungicide for papermaking white water
  • High-efficiency fungicide for papermaking white water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Take 4 L of the above isothiazolinone derivatives and 12 L of 1227 (quaternary ammonium salt cationic surfactant) respectively, mix well, add 672 grams of magnesium chloride, stir evenly, and seal in the container. That is to make a high-efficiency fungicide for papermaking white water. The actual compound content of the fungicide is: 2.8% of 5-chloro-2-methylisothiazolin-3-one, 2-methylisothiazolin-3-one 0.70%, 33.8% of dodecyl dimethyl benzyl ammonium chloride, 4.2% of magnesium chloride, and the balance is water.

[0026] Bactericidal application test on papermaking white water: the papermaking white water circulating water in paper mills has been tested and the total number of microorganisms is 1.0×10 8 cfu / mL. Take 7L of the above-mentioned high-efficiency bactericide for papermaking white water, add it to the above papermaking white water circulating water with a total volume of 20 tons, and take a sample after 4 hours to determine that the total number of microo...

Embodiment 2

[0029]Take 4 L of the above isothiazolinone derivatives and 16 L of dodecyldimethylbenzyl ammonium chloride respectively, mix well, add 900 g of magnesium chloride, stir evenly, and seal them in a container. That is to make a high-efficiency fungicide for papermaking white water. The actual compound content of this kind of fungicide is: 2.24% of 5-chloro-2-methylisothiazolin-3-one, 2.24% of 2-methylisothiazolin-3-one 0.56%, 36% dodecyl dimethyl benzyl ammonium chloride, 4.5% magnesium chloride, and the balance is water.

[0030] Bactericidal application test on papermaking white water: the papermaking white water circulating water in paper mills has been tested and the total number of microorganisms is 8.9×10 7 cfu / mL. Get 2.5L of this special fungicide for white water, add it to the above papermaking white water circulating water with a total volume of 20 tons, and take a sample after 6 hours to determine that the total number of microorganisms in the papermaking white water...

Embodiment 3

[0033] Separately take 2 L of isothiazolinone derivatives and 10 L of dodecyldimethylbenzyl ammonium chloride, mix thoroughly, add 590 g of magnesium nitrate, stir evenly, and seal them in a container. That is to make a special fungicide for papermaking white water, the actual compound content of this kind of fungicide is: 1.84% of 5-chloro-2-methylisothiazolin-3-one, 1.84% of 2-methylisothiazolin-3-one 0.46%, dodecyl dimethyl benzyl ammonium chloride 37.5%, magnesium nitrate 4.92%.

[0034] Bactericidal application test on papermaking white water: the papermaking white water circulating water in paper mills has been tested and the total number of microorganisms is 9.4×10 7 cfu / mL. Get 4L of this special bactericide for white water, join the above papermaking white water circulating water with a total volume of 20 tons, and take a sample after 4 hours to determine that the total number of microorganisms in papermaking white water is 1.3×10 6 cfu / mL, the bactericidal rate rea...

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Abstract

The invention provides a high-efficiency bactericide for papermaking white water, which contains 1.6-3.2% of 5-chloro-2-methylisothiazolin-3-one, 0.4-0.8% of 2-methylisothiazoline- 3-ketone, 20-40% dodecyl dimethyl benzyl ammonium chloride, 4.0-5.0% magnesium nitrate or magnesium chloride, this bactericide has good bactericidal effect and high chemical stability, it is added to papermaking white water Among them, it can inhibit the reproduction of microorganisms in papermaking white water and kill microorganisms. The killing effect on microorganisms in papermaking white water can reach 95-99.9%, so that repeated recycling of papermaking white water will not cause various paper problems due to microbial problems. The occurrence of diseases (broken paper, holes, needle holes, etc.).

Description

technical field [0001] The invention relates to an industrial bactericide, in particular to a non-oxidative bactericide used for killing microorganisms in papermaking white water. Background technique [0002] As early as 1933, Sanborn proposed the problem of microbial pollution and control measures in the papermaking process. In the papermaking industry, different types of paper products use different raw materials and additives. No matter what kind of product, its basic production The processes are relatively similar, that is, a large number of fibers are suspended in white water, and paper is obtained through processes such as filtration and drying. In order to make the production process go on normally or improve other physical and chemical properties of paper, different additives should be added to the papermaking process, such as sizing agent, flocculant, whitening agent, etc., and the temperature during production is generally maintained at 30°C Left and right, such ...

Claims

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Application Information

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IPC IPC(8): A01N59/08A01P3/00C02F1/50C02F103/28A01N43/80A01N33/02
Inventor 欧阳友生黄小茉陈仪本麦霭平施庆珊邱晓颖黄坤雷谢小保
Owner 广东迪美生物技术有限公司
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