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Fatting agent intermediate and preparation method thereof

An intermediate and fatliquoring agent technology, which is applied in the field of fatliquoring agent intermediates and its preparation, can solve problems such as limiting the application range of long-chain alkanolamides, achieve good softness and natural luster, reduce reaction time, and improve The effect of the composite 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 cannot be directly used in the compounding process of fatliquor, but can only be used as one of the reaction raw materials for the subsequent preparation of fatliquor, which greatly limits the application range of long-chain alkanolamide

Method used

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  • Fatting agent intermediate and preparation method thereof
  • Fatting agent intermediate and preparation method thereof
  • Fatting agent intermediate and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A preparation method for a fatliquoring agent intermediate, comprising the following steps:

[0026] Step 1: Add 1 mol of diethanolamine and 1 mol of oleic 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 130°C and react until the first mixed liquid Medium amine value≤10.0mgKOH / g;

[0027] Step 2: At a temperature of 80°C, add 1 mol of oleic acid and catalyst p-toluenesulfonic acid into the reaction vessel of step 1, stir and mix, and form a second mixed solution after mixing evenly; then raise the temperature of the second mixed solution to After the temperature reaches 130°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; after the reaction is completed, the material is discharged at a temperature of 55°C to obtain fatliquor agent intermediates. (wherein the quality of catalyst in step two ...

Embodiment 2

[0033] A preparation method for a fatliquoring agent intermediate, comprising the following steps:

[0034] Step 1: Add 1 mol of diethanolamine and 0.8 mol of oleic 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 120°C and react until the first mixed liquid Amine value in liquid≤10.0mgKOH / g;

[0035] Step 2: At a temperature of 80°C, add 1.2 mol of oleic 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 120°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; after the reaction, the material is discharged at a temperature of 55°C to obtain Grease intermediates. (wherein the quality of the catalyst in the step two is 0.4% of the quality of th...

Embodiment 3

[0037] A preparation method for a fatliquoring agent intermediate, comprising the following steps:

[0038] Step 1: Add 1 mol of diethanolamine and 0.95 mol of oleic acid into the reaction vessel, stir and mix, and mix uniformly 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;

[0039] Step 2: At a temperature of 80°C, add 1.05 mol of oleic 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 liquid is ≤5.0mgKOH / g, and the acid value is ≤10.0mgKOH / g; after the reaction, the material is discharged at a temperature of 55°C to obtain Grease intermediates. (wherein the quality of catalyst in step two is 0.25% of the quality of ol...

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Abstract

The invention discloses a fatting agent intermediate and a preparation method thereof, the fatting agent intermediate is prepared by taking oleic acid and diethanol amine as reactants under the catalytic action of a catalyst p-toluenesulfonic acid; the fatting agent intermediate contains an oleamide structure, an oleate structure and hydroxyl, so that the compounding property of the fatting agentintermediate with other various fatting agents is improved, and the fatting agent intermediate can continuously participate in the reaction. Molecules contain acylamino and ester groups, and the molecules can be used as a raw material to be compounded into various leather fatting agents to improve the compounding effect and fatting performance. Reactive hydroxyl in oleamide ester molecules can also be used as a reaction oil material for preparing phosphorylated fatliquoring agents and sulfosuccinate fatliquoring agents; the leather is endowed with better softness and natural gloss. Other solvents or dispersing agents do not need to be added in the preparation process of the prepared fatting agent intermediate oleamide ester, the fatting agent intermediate oleamide ester is environmentallyfriendly, and the product purity reaches 90% or above through amidation and esterification reactions.

Description

technical field [0001] The invention relates to the technical field of leather chemical industry, in particular to a fatliquor intermediate and a preparation method thereof. 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 su...

Claims

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Application Information

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IPC IPC(8): C14C9/02
CPCC14C9/02
Inventor 沈晓军许晓红兰茜罗卫平
Owner WENZHOU UNIVERSITY
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