Long-chain alkyl alcohol modified ASA waterproof fatliquoring agent and process for preparing same

A technology of long-chain alkyl alcohol and fatliquor, which is applied in the field of long-chain alkyl alcohol modified ASA waterproof and fatliquor and its preparation field, can solve the problems of low conversion rate, high cost, pollution and the like, and achieves low cost, Reduced pollution and damage, low cost effect

Inactive Publication Date: 2013-03-20
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a long-chain alkyl alcohol modified ASA waterproof fatliquoring agent and its preparation method to solve the problems of complex preparation process, low conversion rate, high cost and serious pollution in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1, a kind of long-chain alkyl alcohol modified ASA waterproof fatliquoring agent, is prepared by the following method, and this method comprises the following steps:

[0026] Step 1. Preparation of long-chain alkyl alcohol half-esterification of ASA: Mix 300g of ASA, 240g of cetyl alcohol and 2g of p-toluenesulfonic acid catalyst and carry out half-esterification reaction. The reaction conditions are: 110°C, and the reaction time is 3 hours , making the long-chain alkyl alcohol half-esterification of ASA;

[0027] Step 2. Preparation of long-chain alkyl amides of ASA: lower the system temperature to 65° C., add 101 g of triethylamine to the long-chain alkyl alcohol half-esterification of ASA for amination reaction, and the reaction time is 2 hours. Obtain the long-chain alkyl amidate of ASA;

[0028] Step 3: keep the temperature of the system constant, add NaOH solution while stirring to adjust the pH value to 8; finally, add 3655 g of deionized water to adj...

Embodiment 2

[0029] Embodiment 2, a kind of long-chain alkyl alcohol modified ASA waterproof fatliquoring agent, is prepared by the following method, and this method comprises the following steps:

[0030] Step 1. Preparation of long-chain alkyl alcohol half-esterification of ASA: Mix 300g of ASA, 270g of stearyl alcohol and 1.5g of phosphoric acid catalyst and carry out half-esterification reaction. The reaction conditions are: 140°C, and the reaction time is 2 hours. Obtain the long-chain alkyl alcohol half-esterification product of ASA;

[0031] Step 2. Preparation of long-chain alkyl amides of ASA: lower the system temperature to 65° C., add 73 g of diethylamine to the long-chain alkyl alcohol half-esterification of ASA for amination reaction, and the reaction time is 1 hour. Obtain the long-chain alkyl amidate of ASA;

[0032] Step 3: keep the temperature of the system constant, add NaOH solution while stirring to adjust the pH value to 7.5; finally, add 1929 g of deionized water to ...

Embodiment 3

[0033] Embodiment 3, a kind of long-chain alkyl alcohol modified ASA waterproof fatliquoring agent, is prepared by the following method, and this method comprises the following steps:

[0034] Step 1. Preparation of long-chain alkyl alcohol half-esterification of ASA: Mix 300g of ASA, 186g of dodecyl alcohol and 2.5g of p-toluenesulfonic acid catalyst and carry out half-esterification reaction. The reaction conditions are: 125°C, and the reaction time is 1.5 hour, the long-chain alkyl alcohol half-esterified product of ASA is obtained;

[0035] Step 2. Preparation of long-chain alkyl amides of ASA: lower the system temperature to 70° C., add 87 g of morpholine to the half-esters of long-chain alkyl alcohols of ASA for amination reaction, and the reaction time is 3 hours to obtain Long-chain alkyl amidates of ASA;

[0036] Step 3: keep the temperature of the system constant, add NaOH solution while stirring to adjust the pH value to 8.5; finally, add 1342 g of deionized water ...

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Abstract

The invention belongs to the field of leather chemicals preparation techniques, which particularly relates to a long-chain alkyl alcohol modified ASA waterproof fatliquoring agent and a process for preparing the same. The invention aims to solve the problems of complicated preparation process, low conversion rate, high cost and serious pollution which exist in the prior art. The currently adopted technical scheme includes that the long-chain alkyl alcohol modified ASA waterproof fatliquoring agent is prepared by the process including the following steps: step one, preparing a long-chain alkyl alcohol semi-esterified product of ASA; step two, preparing a long-chain alkyl alcohol amidate of the ASA; step three, keeping system temperature unchanged and adding NaOH to adjust pH value to reach 7.5-9.5 while stirring; and finally adding deionized water to adjust solid content to reach 15-30% and obtaining the long-chain alkyl alcohol modified ASA waterproof fatliquoring agent. Compared with the prior art, the long-chain alkyl alcohol modified ASA waterproof fatliquoring agent and the process for preparing the same have the advantages of multifunction, good effect, low cost, safety and environment protection.

Description

technical field [0001] The invention belongs to the field of leather chemical preparation technology, in particular to a long-chain alkyl alcohol modified ASA waterproof and fatliquoring agent and a preparation method thereof. Background technique [0002] Leather fatliquor is one of the most widely used and indispensable leather chemical materials in leather production, which has an important impact on the quality and performance of leather. With the improvement of people's living standards, consumers have put forward waterproof, durable and Scrubbing and other requirements to improve the practicality and durability of leather products. In order to give the leather a plump, soft and elastic feel and a certain waterproof performance, it is necessary to use a fatliquoring agent with good waterproof effect when fatliquoring. [0003] At present, although the commonly used acrylate copolymers or acrylate and maleic anhydride copolymer waterproof and fatliquoring agents have a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C14C9/02C08F212/10C08F220/44C08F220/14C08F8/18C08F8/32
Inventor 沈一丁李培枝杨晓武银召霞李小瑞王璐马少云
Owner SHAANXI UNIV OF SCI & TECH
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