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Methylisothiazolinone stabilizing system for liquid detergent

A technology of methylisothiazolinone and chloromethylisothiazolinone, which is applied in the field of stabilization systems of methylisothiazolinone preservatives, and can solve the problems of difficulty in guaranteeing the stability of preservatives and low concentration of use , to achieve the effect of inhibiting microbial growth and improving stability

Active Publication Date: 2013-09-25
GUANGZHOU LIBY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

5-Chloro-2-methyl-4-isothiazolin-3-one shows stronger fungicidal activity than 2-methyl-4-isothiazolin-3-one, but at the same time it is easier to degrade
However, when such preservatives are added to the liquid detergent formula, the concentration is low, the original stabilizing system is diluted, and it cannot continue to play a stabilizing role in the product formula
Therefore, it is difficult to guarantee the stability of preservatives in the formula

Method used

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  • Methylisothiazolinone stabilizing system for liquid detergent
  • Methylisothiazolinone stabilizing system for liquid detergent
  • Methylisothiazolinone stabilizing system for liquid detergent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Applied to tableware fruit and vegetable detergent

[0025] According to the formulation content in Table 1, add surfactant, chelating agent, pH regulator, stabilizer, essence and viscosity regulator into deionized water in a certain order, stir until dissolved evenly, and adjust the target pH to 7.0. Samples were drawn for inspection according to quality standards. Qualified products can be filled into finished dishwashing detergent compositions after being left to stand until there is basically no foam.

[0026] The basic formula composition of the dishwashing detergent composition of table 1 embodiment 1

[0027]

[0028] The basic formula refers to Example 1, the initial content of preservative is 15ppm, and the amount of stabilizer is added according to Table 2. After the dishwashing detergent prepared in Example 1 and the dishwashing detergent without stabilizer were stored at high temperature (50 degrees Celsius for 4 weeks), it was found that the stabilit...

Embodiment 2

[0033] Applied to tableware fruit and vegetable detergent

[0034] According to the formula content in Table 3, surfactants, chelating agents, pH regulators, stabilizers, flavors and viscosity regulators were added to deionized water in a certain order, stirred until they were evenly dissolved, and the pH was adjusted to 8.0. Samples were drawn for inspection according to quality standards. Qualified products can be filled into finished dishwashing detergent compositions after being left to stand until there is basically no foam.

[0035] The formula composition of the dishwashing detergent composition of table 3 embodiment 2

[0036]

[0037] After the dishwashing detergent prepared in Example 2 and the dishwashing detergent without adding stabilizer were stored at high temperature (50 degrees Celsius for 4 weeks), it was found that the dishwashing detergent preservative added with 2,6-di-tert-butyl-4-methylphenol The stability was significantly better than that of the...

Embodiment 3

[0041] Used in fabric detergent

[0042] According to the formulation content in Table 5, add surfactant, fluorescent whitening agent, pH regulator, preservative, stabilizer, essence and viscosity regulator into deionized water in a certain order, and stir until dissolved evenly. Samples were drawn for inspection according to quality standards. Qualified products can be filled into finished fabric detergent compositions after standing until there is no foam substantially.

[0043] The formula composition of the fabric detergent composition of table 5 embodiment 3

[0044]

[0045] After high-temperature heat storage (50 degrees Celsius for 4 weeks) between the fabric detergent prepared in Example 3 and the fabric detergent without added stabilizer, it was found that the stability of the fabric detergent preservative added with dilauryl thiodipropionate was significantly better than The results of the experimental group without stabilizer are shown in Table 6.

[0046] ...

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Abstract

The invention discloses a methylisothiazolinone stabilizing system for a liquid detergent. The methylisothiazolinone stabilizing system is formed by a methylisothiazolinone antiseptic (component A) and a stabilizing agent (component B), wherein the component A is one of chloromethylisothiazolinone and methylisothiazolinone or a mixture composed of chloromethylisothiazolinone and methylisothiazolinone in proportion; the component B is one of or a mixture comprising above two of 1-methyl-4-(1-methylvinyl)cyclohexene, 3-phenyl-2-acrolein, 3,7-dimethyl-2,6-octadienal, 2,6-di-tert-butyl-4-methylphenol, butylhydroxyanisole, tert-butylhydroquinone, 4-hexylresorcinol, dilauryl thiodipropionate, ascorbic acid and its salt, tocopherol and tea polyphenol; and the component A and the component B are parts composing the formula of liquid detergent, and are added to a production apparatus through a corresponding production technology in the production process of the liquid detergent. The stabilizing system can substantially improve the stability of the methylisothiazolinone antiseptic in the liquid detergent.

Description

technical field [0001] The invention belongs to the technical field of antibacterial and anticorrosion, and in particular relates to a stable system of methylisothiazolinone preservatives applied to liquid detergents. Background technique [0002] Methylisothiazolinone preservatives are widely used in liquid detergents. Such preservatives are mixtures, usually composed of methylisothiazolinone and chloromethylisothiazolinone in a certain proportion, and have high bactericidal activity. , formula compatibility, high safety and other advantages. However, methylisothiazolinone preservatives are easy to degrade under high temperature, light, high pH and other environments, and are easy to react with strong reducing agents, strong oxidizing agents and strong nucleophiles, especially at low concentrations (ppm grade) are easily decomposed by themselves. The following is the structural formula of methylisothiazolinone preservatives: [0003] [0004] 2-Methyl-4-isothiazolin-3...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11D3/20C11D3/18C11D3/34C11D3/60
Inventor 邱孟德刘庆刚
Owner GUANGZHOU LIBY
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