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Production method for antibacterial agent potassium hexadienoic acid

A kind of technology of potassium hexadienoate and production method, which is applied in the production field of antibacterial agent potassium hexadienoate, and can solve problems such as complexity

Inactive Publication Date: 2018-07-03
CHENGDU BO LUO KE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the existing production methods are relatively complicated. Potassium hexadienoate is used as an antibacterial agent. The pros and cons of its production methods have important economic significance for improving product quality and reducing by-product content.

Method used

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  • Production method for antibacterial agent potassium hexadienoic acid
  • Production method for antibacterial agent potassium hexadienoic acid

Examples

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example 1

[0005] The production method of the antibacterial agent potassium hexadienoate, the main steps are: add sorbic acid in the reaction kettle, then add water that is 75% of the weight of sorbic acid, and dropwise add a potassium hydroxide solution with a mass fraction of 30% at 55°C until the reaction Solution pH=8.3, react for 70min. Add a certain amount of activated carbon, vacuum filter, and distill the filtrate under reduced pressure at 50°C for 1h, then raise the temperature to 60°C and discharge. Crystallization was obtained by centrifugal dehydration, the mother liquor was recovered, and finally dried at 115°C for 2 hours to obtain the product.

[0006] product quality

[0007]

example 2

[0009] The production method of the antibacterial agent potassium hexadienoate, the main steps are: add sorbic acid in the reaction kettle, then add water that is 80% of the weight of sorbic acid, and add dropwise a potassium hydroxide solution with a mass fraction of 36% at 60°C until the reaction Solution pH=8.6, react for 90min. Add a certain amount of activated carbon, vacuum filter, and distill the filtrate under reduced pressure at 56°C for 2h, then raise the temperature to 64°C and discharge. Crystallization was obtained by centrifugal dehydration, the mother liquor was recovered, and finally dried at 120°C for 3 hours to obtain the product.

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Abstract

The invention discloses a production method for antibacterial agent potassium hexadienoic acid. The method comprises the following main steps: adding sorbic acid into a reaction kettle, adding water with the weight of 75-80% of the weight of the sorbic acid, adding a potassium hydroxide solution with the mass fraction of 30-36% dropwise at the temperature of 55-60 DEG C until the pH of a reactionsolution is 8.3-8.6, and performing a reaction for 70-90min; adding a certain amount of activated carbon, performing vacuum filtration, performing reduced-pressure distillation on the filtrate at thetemperature of 50-56 DEG C for 1-2h, performing heating to the temperature of 60-64 DEG C, and discharging a material; and performing centrifugal dewatering to obtain a crystal, recovering a mother liquor, and finally performing drying at the temperature of 115-120 DEG C for 2-3h, so as to obtain the product.

Description

technical field [0001] The invention relates to a compound production method, in particular to a production method of antibacterial agent potassium hexadienoate. Background technique [0002] Potassium hexadienoate, as an efficient and safe antiseptic and preservative, is widely used in food, beverage, tobacco, pesticide, cosmetics and other industries, and as an unsaturated acid, it can be used in resin, spice and rubber industries. Potassium hexadienoate is an acidic preservative, and it still has a good antiseptic effect in foods close to pH neutrality, while the antiseptic effect of benzoic acid has dropped significantly when the pH is less than 4, and it has a bad taste. Most of the existing production methods are relatively complicated. Potassium hexadienoate is used as an antibacterial agent. The advantages and disadvantages of its production methods have important economic significance for improving product quality and reducing by-product content. Contents of the i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C51/41C07C57/03
CPCC07C51/412C07C57/03
Inventor 李娟
Owner CHENGDU BO LUO KE TECH CO LTD
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