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Organic long-chain fluorine-alcohol modified ASA leather waterproof fat liquoring agent and preparation method thereof

A technology of chain fluoroalcohol and fatliquoring agent, which is applied in the field of leather chemical preparation process, can solve the problems of unsatisfactory comprehensive effect and single function, and achieve the effect of low cost and simple preparation process

Inactive Publication Date: 2012-10-03
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 kind of organic long-chain fluoroalcohol modified ASA waterproof leather fatliquoring agent and its preparation method, to solve the problems of single function and unsatisfactory comprehensive effect existing in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A kind of organic long-chain fluoroalcohol modified ASA waterproof fatliquor, prepared by the following method:

[0029] Step 1. Mix 300g of ASA, 464g of perfluoroalkyl ethyl octanol 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;

[0030] Step 2. Lower the temperature of the system to 65° C., add 101 g of triethylamine to the reaction product for amination reaction, and the reaction time is 2 hours;

[0031] Step 3: keep the temperature of the system constant, add NaOH solution while stirring to adjust the pH value to 8; finally, add 4913g of deionized water to adjust the solid content to 15%, and then obtain the organic long-chain fluoroalcohol modified ASA waterproof and fatliquoring agent.

Embodiment 2

[0033] A kind of organic long-chain fluoroalcohol modified ASA waterproof fatliquor, prepared by the following method:

[0034] Step 1. Mix 300g of ASA, 364g of perfluoroalkylethylhexanol and 1.5g of p-toluenesulfonic acid catalyst and carry out half-esterification reaction. The reaction conditions are: 140°C, and the reaction time is 2 hours;

[0035] Step 2. Lower the system temperature to 65° C., add 73 g of diethylamine to the reaction product for amination reaction, and the reaction time is 1 hour;

[0036] Step 3: keep the temperature of the system constant, add NaOH solution while stirring to adjust the pH value to 7.5; finally, add 2216g of deionized water to adjust the solid content to 25%, and then obtain the organic long-chain fluoroalcohol modified ASA waterproof and fatliquoring agent.

Embodiment 3

[0038] A kind of organic long-chain fluoroalcohol modified ASA waterproof fatliquor, prepared by the following method:

[0039] Step 1. Mix 300g of ASA, 546g of perfluoroalkyl ethyl decanol and 2.5g of boric acid catalyst and carry out half-esterification reaction. The reaction conditions are: 125°C, and the reaction time is 1.5 hours;

[0040] Step 2. Lower the temperature of the system to 70° C., add 87 g of morpholine to the reaction product for amination reaction, and the reaction time is 3 hours;

[0041] Step 3: keep the temperature of the system constant, add NaOH solution while stirring to adjust the pH value to 8.5; finally, add 2225 g of deionized water to adjust the solid content to 30%, and then obtain the organic long-chain fluoroalcohol modified ASA waterproof and fatliquoring agent.

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Abstract

The invention belongs to the field of leather chemical preparation process, and particularly relates to an organic long-chain fluorine-alcohol modified ASA leather waterproof fat liquoring agent and a preparation method thereof. The invention is to solve the problems of single function and non-ideal comprehensive effect in the prior art and adopts the technical scheme that the organic long-chain fluorine-alcohol modified ASA waterproof fat liquoring agent is prepared by the following method: step one, mixing ASA, organic long-chain fluorine-alcohol and a catalyst, and performing semi-esterification reaction; step two, cooling the system, and adding an amination reagent into the reaction product to perform amination reaction; step three, adding NaOH solution into the aminated product whilestirring to adjust the value; and finally, adding deionized water into the solution to obtain the organic long-chain fluorine-alcohol modified ASA waterproof fat liquoring agent. Compared with the prior art, the fat liquoring agent and the preparation method have the advantages of (1) multiple functions, (2) good effect, (3) low cost, (4) safety and environmental protection, and (5) simple preparation process.

Description

technical field [0001] The invention belongs to the field of leather chemical preparation technology, and in particular relates to an organic long-chain fluoroalcohol modified ASA waterproof leather 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 acrylic esters or their copolymers with maleic anhydride have waterproof and fat...

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李小瑞李刚辉银召霞周文敏
Owner SHAANXI UNIV OF SCI & TECH
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