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Leather-protective fat liquoring agent and preparation method thereof

A fatliquoring agent, leather 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., can solve the problem of poor protection performance and fatliquoring efficiency Low surface energy, improve fatliquoring efficiency, and improve the effect of plumpness

Inactive Publication Date: 2019-05-10
朱海鹏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a leather protective fatliquoring agent and its preparation method in view of the problems of poor protective performance and low fatliquoring efficiency of the current leather fatliquor

Method used

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  • Leather-protective fat liquoring agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0025] The preparation method of fatliquoring active agent is:

[0026] (1) Take the active monomer and add the acid active agent according to the mass ratio of 2~5:5~9, raise the temperature to 80~90°C and stir and mix for 60~90min, cool to 60~70°C to obtain the cooled product, take the cooled product according to the mass Ratio 10~15: 2~5 Add sodium sulfite, then add 1~3% sodium nitrate of cooling material, stir and mix at 60~70°C for 10~20min to get the mixture;

[0027] (2) Take sodium bisulfite and add deionized water at a mass ratio of 1~3:10~20, stir and mix for 20~30min to obtain a mixed solution, take the mixed solution and add it dropwise to the mixture at a mass ratio of 2~5:30~40 , stir and mix at 60~70°C for 60~90min to obtain a stirred mixture, take the stirred mixture and add distilled water at a mass ratio of 5~10:2~5, stir and mix at 70~80°C for 2~4h, and cool to room temperature to obtain Fatliquoring active agent.

[0028]The preparation method of the load...

Embodiment 1

[0036] Polypropylene carbonate: molecular weight is 3000.

[0037] The active monomer is: take 12-hydroxystearic acid and add diethanolamine at a mass ratio of 2:1, heat up to 120°C, add p-toluenesulfonic acid with 1% weight of diethanolamine, keep warm at 125°C for 3 hours, cool to room temperature, Pressure distillation, that is, the active monomer.

[0038] The acid active agent is: 3,3',4,4'-biphenyltetracarboxylic dianhydride.

[0039] The preparation method of fatliquoring active agent is:

[0040] (1) Take the active monomer and add the acid active agent according to the mass ratio of 2:5, heat up to 80°C and stir and mix for 60 minutes, cool to 60°C to obtain a cooling product, take the cooling product and add sodium sulfite at a mass ratio of 10:2, and then add cooling Sodium nitrate with 1% substance mass was stirred and mixed at 60°C for 10 minutes to obtain a mixture;

[0041] (2) Take sodium bisulfite and add deionized water at a mass ratio of 1:10, stir and mi...

Embodiment 2

[0050] Polypropylene carbonate: molecular weight is 3000.

[0051] The active monomer is: take 12-hydroxystearic acid and add diethanolamine at a mass ratio of 7:3, heat up to 130°C, add p-toluenesulfonic acid with 3% weight of diethanolamine, keep warm at 135°C for 5h, cool to room temperature, reduce Pressure distillation, that is, the active monomer.

[0052] The acid active agent is: take maleic anhydride.

[0053] The preparation method of fatliquoring active agent is:

[0054] (1) Take the active monomer and add the acid active agent according to the mass ratio of 5:9, raise the temperature to 90°C and stir and mix for 90 minutes, cool to 70°C to obtain a cooling product, take the cooling product and add sodium sulfite at a mass ratio of 15:5, and then add cooling Sodium nitrate with 3% substance mass was stirred and mixed at 70°C for 20 minutes to obtain a mixture;

[0055] (2) Take sodium bisulfite and add deionized water at a mass ratio of 3:20, stir and mix for 30...

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Abstract

The invention discloses a leather-protective fat liquoring agent and a preparation method thereof and belongs to the field of leather chemical engineering. A fat liquoring active agent prepared by themethod increases intervals among collagen fiber bundles to realize effect of loosening and lubricating leather collagen fiber and enhances toughness of leather, and the fat liquoring agent has high auxiliary functionality like softness, plumpness and light resistance; a prepared loading additive provides a framework structure for leather fiber, plumpness after fat liquoring is improved, low surface energy of the loading additive is utilized to accelerate compatibility among components, and fat liquoring efficiency is improved; through a prepared silane additive, a hydrophobic leather surfaceis resistant to dry scrubbing and air and moisture permeable, so that leather after fat liquoring has scrubbing-resistant efficacy, and maintaining time after fat liquoring is prolonged; an ultraviolet protection film is built on the surface of the leather after fat liquoring through polyvinyl alcohol,pullula and rutin, so that fat liquoring protection effect is improved. The problem that existingleather fat liquoring agents are poor in protection performance and low in fat liquoring efficiency is solved.

Description

technical field [0001] The invention relates to a protective leather fatliquoring agent and a preparation method thereof, belonging to the technical field of leather chemical industry. Background technique [0002] With the development of the leather industry and the improvement of people's living standards, people's requirements for the quality of leather products are getting higher and higher, and the varieties that highlight the characteristics of genuine leather such as aniline leather, suede leather, white leather and light-colored leather And so the output is getting bigger and bigger. Because light-colored leather products are easily affected by light during storage and use, they will turn yellow and age, which will affect the quality of the finished leather. This requires that the corresponding tanning agents, dyes, fatliquor and finishing agents have good stability. sex. Fatliquor is the most used leather chemical in the leather production process, and the quality...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C14C9/02
Inventor 朱海鹏
Owner 朱海鹏
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