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Method for preparing weak cation fatty acid softening agent

A weak cationic and softener technology, which is applied in the field of preparation of weak cationic fatty acid softeners, can solve problems such as poor hand feeling, inability to use, large yellowing, etc.

Active Publication Date: 2013-05-22
沂水祥腾化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, cationic softeners have the best hand feeling, low price, and are widely used, but yellowing becomes larger during use, so they cannot be used on light-colored and white fabrics that are sensitive to shade, nor can they be bathed with anionic surfactants. The range is very limited. Nonionic softeners have good whiteness and can be used on all fabrics and fabrics. They can be used in the same bath with anionic or cationic additives, but they have poor hand feeling and high price. Type softener has the worst hand feel, and is mainly used in the same bath with dyeing auxiliaries to shorten the dyeing process. At present, there is no one with good hand feel, good whiteness, and low yellowing. The production process is simple, and it is easy to dissolve in cold water.

Method used

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  • Method for preparing weak cation fatty acid softening agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] After heating the hardened oil to 70-98°C to melt, add 0.2% antioxidant and catalyst sodium pyrosulfite to the molten liquid of the hardened oil, and after stirring, suck in diethylenetriamine in a vacuum state, stir, and The molar ratio of diethylenetriamine to hardened oil is 1:6, then add hydroxyethylethylenediamine, the molar ratio to hardened oil is 1:1.2, then add diethanolamine, and the molar ratio to hardened oil is 1: 10. Stop heating after raising the temperature to 105°C. When the reaction state reaches 120°C, keep the reaction for 2 hours to complete amidation.

[0015] Add alkylation reagents acetic acid and formic acid after heat preservation reaction. The molar ratio of acetic acid to hardened oil is 1:1.6, and the molar ratio of formic acid to hardened oil is 1:9. After the addition, the heat preservation reaction is completed for half an hour, and the alkylation reaction is completed. , lower the temperature of the alkylation reaction product to 90-100°...

Embodiment 2

[0017] After heating the hardened oil to 70-95°C to melt, add 0.3% of antioxidant and catalyst sodium metabisulfite to the molten liquid of the hardened oil, and after stirring, suck in diethylenetriamine in a vacuum state, stir, and The molar ratio of diethylenetriamine to hardened oil is 1:7, then add hydroxyethylethylenediamine, the molar ratio to hardened oil is 1:1.4, then add diethanolamine, and the molar ratio to hardened oil is 1: 9. After heating up to 105°C, stop heating, and when the reaction state reaches 120°C, keep the reaction for 2 hours to complete amidation.

[0018] Add alkylation reagent acetic acid and formic acid after heat preservation reaction. The molar ratio of acetic acid to hardened oil is 1:1.6, and the molar ratio of formic acid to hardened oil is 1:8. , lower the temperature of the alkylation reaction product to 90-100°C, discharge the material, and after cooling, the sheet-shaped weak cationic fatty acid softener can be obtained.

Embodiment 3

[0020] After heating the hardened oil to 70-98°C to melt, add 0.2% antioxidant and catalyst sodium pyrosulfite to the molten liquid of the hardened oil, and after stirring, suck in diethylenetriamine in a vacuum state, stir, and The molar ratio of diethylenetriamine to hardened oil is 1:5.5, then add hydroxyethylethylenediamine, the molar ratio to hardened oil is 1:1.1, and then add diethanolamine, and the molar ratio to hardened oil is 1: 9.5. Stop heating after raising the temperature to 105°C. When the reaction state reaches 125°C, keep the reaction for 2 hours to complete amidation.

[0021] Add the alkylation reagent acetic acid and formic acid after the heat preservation reaction. The molar ratio of acetic acid to hardened oil is 1:1.7, and the molar ratio of formic acid to hardened oil is 1:10.5. , lower the temperature of the alkylation reaction product to 90-100°C, discharge the material, and after cooling, the sheet-shaped weak cationic fatty acid softener can be obt...

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Abstract

The invention relates to a method for preparing a weak cation fatty acid softening agent. The method provided by the invention comprises the following steps of: heating hardened oil to be melted and adding diethylenetriamine into the melted liquid after adding antioxidant; then orderly adding hydroxyethyl ethylenediamine and diethanol amine; raising temperature and then carrying out an amidation condensation reaction and an ester exchanging reaction; adding alkylating reagents including acetic acid and formic acid into the product of the amidation condensation reaction to carry out an alkylation reaction; then cooling, discharging materials and slicing to prepare the sheet-shaped softening agent. By reselecting synthesizing raw materials, optimizing a synthesizing process, utilizing the hardened oil as the main raw material and adding the antioxidant into the preparation process, the prepared softening agent is the weak cation fatty acids sheet-shaped softening agent which has the advantages of good hand feeling, high whiteness and low yellow stain.

Description

technical field [0001] The invention relates to the preparation of a fatty acid fabric softener, in particular to a preparation method of a weak cationic fatty acid softener. Background technique [0002] At present, fatty acid fabric softeners are mainly divided into cationic, nonionic and anionic. Among them, cationic softeners have the best hand feeling, low price, and are widely used, but yellowing becomes larger during use, so they cannot be used on light-colored and white fabrics that are sensitive to shade, nor can they be bathed with anionic surfactants. The range is very limited. Nonionic softeners have good whiteness and can be used on all fabrics and fabrics. They can be used in the same bath with anionic or cationic additives, but they have poor hand feeling and high price. Type softener has the worst hand feel, and is mainly used in the same bath with dyeing auxiliaries to shorten the dyeing process. At present, there is no one with good hand feel, good whitene...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M13/402D06M13/328C07C233/36C07C231/02C07C219/06C07C213/06
Inventor 马永才武臣玉文水平
Owner 沂水祥腾化工有限公司