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Preparation method of environment-friendly leather retanning fatliquoring agent

A retanning and fatliquoring, environmentally friendly technology, applied in leather impregnation, small raw hide/large raw hide/leather/fur treatment, small raw hide/large raw hide/leather hide/fur chemical treatment, etc. , It is difficult to realize the problems of expanding production and high reaction conditions, so as to achieve the effect of low reaction temperature, good filling and penetration performance, and improved retanning performance.

Active Publication Date: 2020-02-14
ZIBO LURUI FINE CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method also uses terpolymer as the main component of the product. Although the leather retanning and fatliquoring agent has obvious advantages in the production of washable, low fog and waterproof leather products in the literature reports, the process uses organic The solvent is used as the medium, and the corrosive maleic anhydride is used as the comonomer, which requires high reaction conditions
At the same time, this process also uses a high-temperature reaction process, which does not conform to the development concept of green and environmental protection, and it is difficult to expand production
[0005] Therefore, it is necessary to develop a preparation method of an environment-friendly leather retanning and fatliquoring agent, with the concept of simplicity, high efficiency, energy saving and environmental protection, to overcome the cumbersome steps, high energy consumption and serious pollution of "three wastes" in the existing preparation process and other disadvantages

Method used

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  • Preparation method of environment-friendly leather retanning fatliquoring agent
  • Preparation method of environment-friendly leather retanning fatliquoring agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Preparation of solution system

[0039] Into a 1000ml glass flask equipped with a stirrer, a thermometer, and a condensing device, accurately add 450g of deionized water and 2.22g of sodium metabisulfite, stir to mix evenly, and then add 11.7g of sodium dihydrogen phosphate and hydrogen phosphate to the solution in sequence Disodium 1.8g. Stir the solution to make it evenly mixed to form a solution system.

[0040] Preparation of initiator solution

[0041] Get two 100ml glass beakers, add 1.35g sodium persulfate and 54.2g deionized water respectively in glass beakers, stir to form initiator solution I 1 and initiator solution I 2 , and the initiator solution I 1 Transfer to a 100ml constant pressure dropping funnel.

[0042] Polymerization

[0043] Use a mouthpiece to fill the initiator solution I 1 The 100ml constant pressure dropping funnel is installed in the above-mentioned four-necked flask, another 250ml constant-pressure dropping funnel is taken, accurate...

Embodiment 2

[0050] Preparation of solution system

[0051] Into a 1000ml glass flask equipped with a stirrer, a thermometer, and a condensing device, accurately add 488g of deionized water and 2.08g of sodium metabisulfite, stir to mix evenly, and then add 10.6g of sodium dihydrogen phosphate and hydrogen phosphate to the solution in sequence Disodium 1.58g. Stir the solution to make it evenly mixed to form a solution system.

[0052] Preparation of initiator solution

[0053] Get two 100ml glass beakers, add 1.42g ammonium persulfate and 54.8g deionized water respectively in glass beakers, stir to form initiator solution I 1 and initiator solution I 2 , and the initiator solution I 1 Transfer to a 100ml constant pressure dropping funnel.

[0054] Polymerization

[0055] Use a mouthpiece to fill the initiator solution I 1 The 100ml constant pressure dropping funnel is installed in the above-mentioned four-necked flask, another 250ml constant-pressure dropping funnel is taken, accur...

Embodiment 3

[0062] Preparation of solution system

[0063] In the 1000ml glass flask that is equipped with stirrer, thermometer, condensing device, accurately add deionized water 530g, sodium bisulfite 2.37g, stir to make it mix evenly, then, add sodium dihydrogen phosphate 11.9g and Disodium hydrogen phosphate 1.66g. Stir the solution to make it evenly mixed to form a solution system.

[0064] Preparation of initiator solution

[0065] Get two 100ml glass beakers, add 1.55g potassium persulfate and 60.0g deionized water respectively in glass beakers, stir to form initiator solution I 1 and initiator solution I 2 , and the initiator solution I 1 Transfer to a 100ml constant pressure dropping funnel.

[0066] Polymerization

[0067] Use a mouthpiece to fill the initiator solution I 1 The 100ml constant pressure dropping funnel is installed in the above-mentioned four-necked flask, another 250ml constant-pressure dropping funnel is taken, accurately weighed and added with 200.0g of a...

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Abstract

The invention belongs to the technical field of leather chemical industry, and particularly relates to a preparation method of an environmentally friendly leather retanning fatliquoring agent. The method includes the steps that under the presence of an initiator B, acrylic acid is subjected to a polymerization reaction and a neutralization reaction in a solution system, then the obtained polymer is mixed with orotic acid, and deionized water is used for adjusting solid content to obtain the leather retanning fatliquoring agent. The redox initiator is used, the reaction efficiency is high, therequired temperature of the reactions is low, the temperature is easy to control, the reaction time is short, the reaction duration is greatly shortened, and the energy consumption is reduced; water is used as a reaction medium, and an inorganic salt is used as the initiator and a buffer agent, so that environmental problems caused by the use of an organic solvent and the organic peroxide initiator are avoided; orotic acid is used as an additive, so that not only are a large number of carboxyl groups provided, but also retanning performance and absorption of chromium during tanning are improved. At the same time, an imino group in a molecular structure makes the leather retanning fatliquoring agent have great water resistance and acid and alkali resistance.

Description

technical field [0001] The invention belongs to the technical field of leather chemical industry, and in particular relates to a preparation method of an environment-friendly leather retanning and fatliquoring agent. Background technique [0002] Retanning and fatliquoring agent is one of the important chemical materials in the leather production process. It has the functions of retanning and fatliquoring. It can not only lubricate the leather fiber, prevent the leather from becoming stiff and cracking, but also make the leather have corresponding toughness and softness, and maintain its strength. At the same time, a part of the fatliquoring agent combined with the chrome leather fiber It can also play a slight role in supplementary tanning, filling, dyeing and fixing, and slowing down the migration of chrome tanning agents. With the improvement of people's living standards, leather products have become people's first choice for daily necessities due to their natural, green...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F120/06C14C3/22C14C3/08C14C9/02
CPCC08F120/06C14C3/08C14C3/22C14C9/02
Inventor 张琳涵王艾德谢瑞丽崔金德
Owner ZIBO LURUI FINE CHEM CO LTD