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Leather fatting agent

A technology of leather fatliquor and reagent, which is applied in the field of leather fatliquor, can solve the problems of poor toughening performance, achieve toughness maintenance, reduce hydrophilic groups, and avoid performance degradation

Inactive Publication Date: 2019-01-01
翟琳
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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 kind of leather fatliquoring agent in view of the softness and toughness of commonly used leather fatliquor

Method used

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  • Leather fatting agent

Examples

Experimental program
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Effect test

preparation example Construction

[0029] The preparation method of emulsified active liquid, comprises the steps:

[0030] (1) Take the pretreated waste oil and add methanol and concentrated sulfuric acid at a mass ratio of 1:3~6:0.01 to mix, stir at 60~70°C at 250~300r / min for 20~45min, and keep warm for 1~3h to obtain the pretreated waste oil. For the esterified product, take the pre-esterified product and add reagent A at a mass ratio of 10~15:2 to mix, move to a centrifuge, and centrifuge at 3000~4000r / min for 10~15min, take the upper oily phase and wash it with water for 2~4 times to obtain the pre-esterified product. Esterified waste oil;

[0031] (2) According to the mass ratio of 1:6~8:0.01, take pre-esterified waste oil, methanol, and sodium hydroxide and mix them, and reflux at 60~80°C for 2~4 hours to obtain the reactant. Take the reactant in a centrifuge at 2000~ Centrifuge at 3000r / min for 6~10min, take the fat phase according to the mass ratio of 12~18:0.3~0.7, add the catalyst and mix, react at...

Embodiment 1

[0040] Auxiliary: Mix hydrogenated castor oil, microcrystalline paraffin, and gelatin at a mass ratio of 5:1:0.1 to obtain the adjuvant.

[0041] Surfactant: Mix sodium dodecylbenzenesulfonate and cetyltrimethylammonium bromide in a mass ratio of 1:3 to obtain a surfactant.

[0042] Reagent A: Mix 4°C water and acetone at a mass ratio of 8:3 to obtain Reagent A.

[0043] Reagent B: Mix 12% sodium bicarbonate solution and sodium citrate at a ratio of 12:1 by mass fraction to obtain reagent B.

[0044] Plant essential oil: Wintersweet flower essential oil.

[0045] Pretreatment of gutter oil: take gutter oil and filter it, at 50°C, take the filtrate and mix it with deionized water at a mass ratio of 1:10, stir it with 300r / min magnetic force for 30min, let it stand at room temperature for 1h, at 40°C, take the upper oil phase and press Mix with white clay at a mass ratio of 6:1, stir magnetically at 500r / min for 35min, filter with suction, take the filtrate and vacuumize it to...

Embodiment 2

[0058] Auxiliary: Mix hydrogenated castor oil, microcrystalline paraffin, and gelatin at a mass ratio of 8:1:0.1 to obtain the adjuvant.

[0059] Surfactant: Mix sodium dodecylbenzenesulfonate and cetyltrimethylammonium bromide in a mass ratio of 1:6 to obtain a surfactant.

[0060] Reagent A: Mix 8°C water and acetone at a mass ratio of 15:3 to obtain Reagent A.

[0061] Reagent B: Mix 12% sodium bicarbonate solution and sodium citrate at a ratio of 18:1 by mass to obtain reagent B.

[0062] Plant essential oil: Jasmine essential oil.

[0063] Pretreatment of gutter oil: Take gutter oil and filter it at 65°C, take the filtrate and mix it with deionized water at a mass ratio of 1:15, stir it with a magnetic force at 500r / min for 50min, let it stand at room temperature for 3h, at 55°C, take the upper oil phase and press Mix with white clay at a mass ratio of 10:1, stir with 800r / min magnetic force for 50min, filter with suction, take the filtrate and vacuumize to remove moist...

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Abstract

The invention relates to a leather fatting agent, which belongs to the field of leather chemical industries. Illegal cooking oil is filtered to remove solid impurities, water soluble impurities can beremoved by virtue of the washing with hot water, an oil phase is refined by using hargil and then disinfected to obtain preprocessed illegal cooking oil, the illegal cooking oil is converted into biological diesel by adopting a two-step acid-alkali ester exchanging method, so that the toughness of the leather can be effectively maintained; moreover, hydrophilic groups in the system are reduced, and the internal water content is reduced, so that the problem of the performance decrease caused by the water absorption swelling in the storage and application process can be effectively avoided; andCarbomer liquid comprises a lot of acid groups, and can have dehydration condensation with partial amino in the system to form an amide bond, the amide bond interacts with active emulsion to producea mucus gel network, so that the softness is improved, a three-dimensional network structure in the system can be intersected, the density of the cross-linked network system can be improved, and a toughening effect can be achieved. By adopting the leather fatting agent, the problems of the conventional leather fatting agent that the softness and toughening performance are poor can be solved.

Description

technical field [0001] The invention relates to a leather fatliquoring agent, which belongs to the technical field of leather chemical industry. Background technique [0002] With the development of the leather industry, people have higher and higher requirements for the quality of leather products, and the output of lightly painted or unpainted varieties that highlight the characteristics of genuine leather, such as aniline leather, suede leather, white leather and light-colored leather, is increasing. . 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 one of the most important chemical materials in leather processing. It is a compound formed by compounding various oils and their modified products and appropriate surf...

Claims

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Application Information

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IPC IPC(8): C14C9/02
CPCC14C9/02
Inventor 翟琳陈建春卢星
Owner 翟琳
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