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Bi-dodecyl double quaternary ammonium salt iodine attached bactericide preparation method

A technology of didodecyl and diquaternary ammonium salts, which is applied in the direction of fungicides, botanical equipment and methods, biocides, etc., and can solve the problems of incomplete iodine compounding, loss of iodine, and inability to supplement stirring

Inactive Publication Date: 2007-06-13
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the insufficient contact time of the two solutions and the lack of stirring during the distillation process, the direct compounding method leads to incomplete compounding with iodine, and a large amount of iodine will be lost in the process of post-processing.
In this way, the strong bactericidal properties of iodine cannot be reflected during sterilization, resulting in a low bactericidal rate.
There is no essential difference between rotary compounding itself and direct compounding. The main reason is that rotary evaporation is used in the compounding process. Although the contact time of the two solutions is not long, the two solutions can be fully contacted by rotary evaporation in distillation compounding. Lead to complete iodine compounding and higher sterilization rate

Method used

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  • Bi-dodecyl double quaternary ammonium salt iodine attached bactericide preparation method
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  • Bi-dodecyl double quaternary ammonium salt iodine attached bactericide preparation method

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specific Embodiment approach 1

[0006] Specific embodiment one: present embodiment is realized in this way: a, double dodecyl diquaternary ammonium salt and I 2 Pour it into the solvent with a mass ratio of 10: 2 ~ 5, the amount of solvent is 8 ~ 10L / Kg didodecyl bis quaternary ammonium salt; b, iodine is dissolved at 30 ~ 50 ° C, and then heated to 50 React at a constant temperature of ~60°C for 3~5h; c. Pour the solution into a rotary evaporator, control the temperature <40°C, and evaporate the solvent in a vacuum to obtain a viscous brown liquid; d. Put the liquid in vacuum drying In the box, dry under the condition of vacuum degree of -0.08 ~ -0.09MPa for 10 ~ 13h, and finally obtain a tan solid.

specific Embodiment approach 2

[0007] Specific embodiment two: this embodiment is different from specific embodiment one in that it also includes step e: dissolving the tan solid in ethanol and heating at 60-100°C for 10-14 hours, then adding 20-50ml of distilled water, vacuum After suction filtration, heat at 60-80°C for 10-14 hours to obtain a purified product. Other process conditions and steps are the same as those in Embodiment 1.

specific Embodiment approach 3

[0008] Specific embodiment three: what this embodiment is different from specific embodiment one and two is that didodecyl diquaternary ammonium salt and I 2 The mass ratio is 10:2.5. Other process conditions and steps are the same as those in Embodiments 1 and 2.

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Abstract

The invention provides a method for preparing bisdodecyl bisquaternary ammonium salt tamed iodine germicide wherein the purpose of the invention is realized through, a, (1) charging Gemini and I2 into solvent by the mass ratio of 10(2-5), (2) dissolving iodine at 30-50 DEG C, heating to 50-60 DEG C, thermostatic reaction 3-5h, (3) charging the solution again into rotary evaporator, controlling the temperature to below deg 40 C, steaming the solvent by vacuum-pumping, obtaining thick brown liquid, (4) storing the liquid in vacuum drying oven, drying 10-13h under the condition of vacuum degree of -0.08 to -0.09MPa.

Description

technical field [0001] The invention relates to a preparation method of a fungicide, in particular to a preparation method of a didodecyl bisquaternary ammonium salt iodophor fungicide. Background technique [0002] Quaternary ammonium salt is an important variety of cationic surfactants. Because of its strong adsorption capacity for negatively charged substances, it has antistatic, soft and bactericidal effects. Since DomagkG discovered that the long-chain alkyl quaternary ammonium salt has strong bactericidal properties more than half a century ago, the synthesis of cationic active disinfectants has been one of the more active fields in the research of disinfectants. At present, foreign cationic active disinfectants have been developed to the fifth generation, that is, didodecyl diquaternary ammonium salt (Gemini). After research, it is found that this type of compound has better surface activity and high bactericidal activity. However, due to the limitation of condition...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N59/12A01P3/00
Inventor 唐冬雁闵春英穆晗
Owner HARBIN INST OF TECH
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