Light-resistant fatting agent intermediate

A fatliquoring agent and intermediate technology, which is applied in the field of lightfast fatliquoring agent intermediates, can solve the problems of poor lightfastness of fatliquor, not suitable for light-colored leather, and limited application range, etc., and achieve good lightfastness and good softness And natural luster, improve the effect of compounding effect

Active Publication Date: 2020-05-08
WENZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of alkanolamide contains carbon-carbon double bonds in the long chain, which is easy to be oxidized and has a high iodine value. The fatliquoring agent prepared in this way has poor light resistance and is not suitable for light-colored leather. Alcohol amides cannot be directly used in the compounding process of fatliquor, which limits its application range

Method used

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  • Light-resistant fatting agent intermediate
  • Light-resistant fatting agent intermediate
  • Light-resistant fatting agent intermediate

Examples

Experimental program
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Effect test

Embodiment 1

[0021] A preparation method of a light-resistant type fatliquoring agent intermediate, comprising the following steps:

[0022] Step 1: Add 1 mol of diethanolamine and 0.95 mol of lauric acid into the reaction vessel, stir and mix, and mix well to form the first mixed liquid; then raise the temperature of the first mixed liquid to 140°C and react until the first mixed liquid Amine value in liquid≤10.0mgKOH / g;

[0023] Step 2: At a temperature of 80°C, add 1.1 mol of lauric acid and catalyst p-toluenesulfonic acid into the reaction vessel of step 1, stir and mix, and form the second mixed solution after mixing evenly; then the temperature of the second mixed solution After rising to 140°C, the reaction is carried out until the amine value in the second mixed solution is ≤5.0mgKOH / g, and the acid value is ≤10.0mgKOH / g; after the reaction is completed, the material is discharged at a temperature of 70°C to obtain light resistance Type fatliquor intermediate. (wherein the cataly...

Embodiment 2

[0027] A preparation method of a light-resistant type fatliquoring agent intermediate, comprising the following steps:

[0028] Step 1: Add 1 mol of diethanolamine and 0.95 mol of myristic acid into the reaction vessel, stir and mix, and mix well to form the first mixed liquid; then raise the temperature of the first mixed liquid to 140°C and react until the first mixed liquid Amine value in liquid≤10.0mgKOH / g;

[0029] Step 2: At a temperature of 80°C, add 1.1 mol of myristic acid and the catalyst p-toluenesulfonic acid into the reaction vessel of step 1 and stir to mix, and form the second mixed liquid after mixing evenly; then the temperature of the second mixed liquid is After rising to 140°C, the reaction is carried out until the amine value in the second mixed solution is ≤5.0mgKOH / g, and the acid value is ≤10.0mgKOH / g; after the reaction is completed, the material is discharged at a temperature of 70°C to obtain light resistance Type fatliquor intermediate. (wherein t...

Embodiment 3

[0035] A preparation method of a light-resistant type fatliquoring agent intermediate, comprising the following steps:

[0036]Step 1: Add 1 mol of diethanolamine and 0.95 mol of palmitic acid into the reaction vessel, stir and mix, and mix uniformly to form the first mixed solution; then raise the temperature of the first mixed solution to 140°C and react until the first The amine value in the mixture is ≤10.0mgKOH / g;

[0037] Step 2: Add 1.1 mol of 12-hydroxystearic acid and catalyst p-toluenesulfonic acid into the reaction vessel of step 1 at a temperature of 80°C, stir and mix, and mix well to form a second mixed solution; then add the second After the temperature of the second mixed liquid is raised to 140°C, the reaction is carried out until the amine value in the second mixed liquid is ≤5.0mgKOH / g, and the acid value is ≤10.0mgKOH / g; material, to obtain light-resistant type fatliquoring agent intermediate. (wherein the quality of catalyst in step two is 0.4% of the qu...

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Abstract

The invention discloses a light-resistant fatting agent intermediate. First saturated fatty acid and diethanol amine which are taken as raw materials are reacted, wherein the long-chain first saturated fatty acid is selected from one of lauric acid, myristic acid and palmitic acid; and after the reaction is finished, second saturated fatty acid is reacted to obtain the intermediate, wherein the second saturated fatty acid is selected from one of lauric acid, myristic acid, palmitic acid and 12-hydroxystearic acid. The synthesized light-resistant fatting agent intermediate not only has good light resistance, but also has a fatty acid amide structure and a fatty acid ester structure in molecules, and contains hydroxyl groups, so that the compatibility with other various fatting agents is improved, and the light-resistant fatting agent intermediate can continuously participate in the reaction. Molecules contain acylamino and ester groups, and can compounded into various leather fatliquoring agents as raw materials to improve the compounding effect and fatting performance; and hydroxyl groups with reactivity in molecules can also be used as a reaction oil material used for preparing phosphorylated fatting agents and sulfosuccinate fatting agents, and the application range of the intermediate is wide.

Description

technical field [0001] The invention relates to the technical field of leather chemical industry, in particular to a light-resistant fatliquor intermediate. Background technique [0002] From raw leather to finished leather, it needs to go through a series of processing procedures, among which the fatliquoring process is one of the key processes in tanning, which not only determines the softness, fullness and elasticity of the finished leather, but also affects the physical and mechanical properties of the finished leather. Hygienic properties such as hand feeling, water absorption, water vapor permeability and air permeability, and have a great impact on physical and mechanical properties such as tensile strength and elongation of leather. In recent years, fatliquoring agents have developed towards functionalization to meet people's increasingly higher requirements for leather products. Through fatliquoring, leather can be endowed with special properties such as waterproof,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C14C9/02
CPCC14C9/02
Inventor 沈晓军孟繁帆许晓红罗卫平柴玉叶
Owner WENZHOU UNIVERSITY
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