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Disinfectant composition containing dbnpa and preparation method thereof

A composition and disinfectant technology, applied in botany equipment and methods, disinfectants, biocides, etc., can solve the problems of storage stability of DBNPA, expansion of water body organic pollution, increase of raw material cost, etc., to reduce high COD problems, good antifreeze performance and strong solubility aiding effect

Active Publication Date: 2018-02-16
OCHEMATE MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The addition of a large amount of organic solvents, on the one hand, increases the cost of its raw materials, and on the other hand, it also brings higher COD values ​​to the system water in the later use, further expanding the pollution of organic matter in the water body
Secondly, in the above-mentioned inventions, the storage stability of DBNPA is not discussed.

Method used

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  • Disinfectant composition containing dbnpa and preparation method thereof
  • Disinfectant composition containing dbnpa and preparation method thereof
  • Disinfectant composition containing dbnpa and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0015] A disinfectant composition containing DBNPA, comprising: DBNPA: 20wt%, tetraethylene glycol: 25wt%, 1,3-butanediol: 12wt%, deionized water: 40.46wt%, sodium bromide: 1wt%, cyano Acetic acid: 1.5 wt%, hydrochloric acid: 0.04 wt%.

[0016] The specific preparation method: add 250kg of tetraethylene glycol and 120Kg of 1,3-butanediol into the reaction kettle and stir for 10 minutes. Deionized water, under the condition of stirring, slowly add sodium bromide 10Kg, cyanoacetic acid 15kg and industrial grade concentrated hydrochloric acid 400ml. Stir for 10 minutes after the addition, and the kettle temperature is 30°C at this time. Slowly add DBNPA under stirring conditions to a total of 200Kg (control the feeding time at about 20 minutes), stir for 55 minutes after the addition is complete, until it is completely dissolved and uniform, take a sample to measure the pH value to 3.6, and finally add the remaining 204.6Kg of deionized water, stir After 15 minutes, take a samp...

Embodiment 2

[0018] A disinfectant composition containing DBNPA, comprising: DBNPA: 20wt%, tetraethylene glycol: 25wt%, 1,3-butanediol: 14wt%, deionized water: 39.92wt%, sodium bromide: 0.5wt%, 2 , 2-dibromomalonamide 0.5wt%, sulfamic acid: 0.08wt%.

[0019] Specific preparation method: Add 250kg of tetraethylene glycol and 140Kg of 1,3-butanediol into the reaction kettle and stir for 10 minutes. The temperature of the kettle is 27°C, add 200Kg of deionized water, and slowly add bromine while stirring. Sodium chloride 5Kg, 2,2-dibromomalonamide 5kg and industrial grade sulfamic acid 800g. Stir for 10 minutes after the addition, and the kettle temperature is 32°C at this time. Slowly add DBNPA under stirring conditions to a total of 200Kg (control the feeding time at about 20 minutes), stir for 55 minutes after the addition, until it is completely dissolved and uniform, take a sample to measure the pH value to 3.8, and finally add the remaining 199.2Kg of deionized water, stir After 15 mi...

Embodiment 3

[0021]A disinfectant composition containing DBNPA, comprising: DBNPA: 20wt%, tetraethylene glycol: 19wt%, 1,3-butanediol: 20wt%, deionized water: 39.45wt%, 2,2-dibromomalonamide : 0.5wt%, cyanoacetic acid: 1.0wt%, hydrochloric acid: 0.05wt%.

[0022] Specific preparation method: Add 190kg of tetraethylene glycol and 200Kg of 1,3-butanediol into the reaction kettle and stir for 10 minutes. The temperature of the kettle is 25°C. Add 200Kg of deionized water. While stirring, add 2, 5Kg of 2-dibromomalonamide, 10Kg of cyanoacetic acid and 500ml of industrial grade hydrochloric acid. Stir for 10 minutes after the addition, and the temperature of the kettle is 29°C. Slowly add DBNPA under stirring condition to a total of 200Kg (control the feeding time at about 20 minutes), stir for 55 minutes after adding, until it is completely dissolved and uniform, take a sample to measure the pH value to 3.5, and finally add the remaining 194.5Kg of deionized water, stir After 15 minutes, tak...

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Abstract

The invention provides a disinfectant composition containing DBNPA, including: 10-20wt% DBNPA, 24-39wt% organic solvent, 39-63wt% water, 1-3wt% stabilizer and 0.04-0.08wt % regulator. The invention also provides a method for preparing the above-mentioned DBNPA-containing disinfectant composition. The disinfectant composition of the present invention uses a lower amount of organic solvent than in the prior art, thereby achieving better stability.

Description

technical field [0001] The invention relates to a DBNPA-containing disinfectant composition and a preparation method thereof. Background technique [0002] [0003] 2,2-dibromo-2-cyanoacetamide (English name is 2,2-dibromo-2-cyanoacetamide, hereinafter referred to as DBNPA) is a non-oxidative rapid fungicide, in addition to broad-spectrum sterilization, In addition to the advantages of fast bactericidal effect and rapid self-degradation, it also has a multi-effect compound function, such as algae killing, sticky killing, and scale removal. DBNPA has been widely used in various fields, such as industrial circulating cooling water, seawater desalination system, membrane water treatment system, oil field, paper industry, metal processing industry and water-based paint, etc. At present, there are many methods for synthesizing DBNPA. Chloroacetic acid, dialkylaminoacrolein, amino acetal diol or methyl cyanoacetate can be used as starting materials to prepare cyanoacetamide fi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N37/34A01N25/02A01N25/22A01P1/00
Inventor 袁新兵
Owner OCHEMATE MATERIAL TECH CO LTD
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