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Leather fatliquor and preparation method thereof

A leather fatliquor and fat-soluble technology, which is applied in the field of leather fatliquor and its preparation, can solve the problems of large amount of antioxidant and high production cost of antioxidative fatliquor, and achieve the goal of not being easily oxidized and deteriorated, reducing volatile organic compounds and The effect of excessive Cr(VI) content and excellent oxidation stability

Active Publication Date: 2021-12-07
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the defects of high antioxidant consumption and high production cost of antioxidant fatliquor in the prior art, the first purpose of the present invention is to provide leather fatliquor with low cost and good antioxidant effect

Method used

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  • Leather fatliquor and preparation method thereof
  • Leather fatliquor and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Preparation of leather fatliquor:

[0033] In parts by weight, 100 parts of sulfated rapeseed oil, 0.4 part of tert-butyl-4-hydroxyanisole and 0.1 part of salicylic acid were placed in a reactor, and stirred at a temperature of 42°C for 0.5 h to obtain a low-cost, high-efficiency Antioxidant leather fatliquor.

[0034] After measurement, the oxidation stability time of the leather fatliquoring agent of this embodiment is 32.6 hours, and the detection result is as follows: figure 2 shown.

Embodiment 2

[0053] Preparation of leather fatliquor:

[0054] In parts by weight, 100 parts of soybean lecithin, 0.1 part of 2,6-di-tert-butyl-p-cresol and 0.05 part of salicylic acid were placed in a reactor and stirred at a temperature of 35°C for 1.8 h to obtain a low-cost, high-efficiency Efficient antioxidant leather fatliquor.

[0055] It was determined that the oxidation stability time of the leather fatliquor in this example was 25.4 h.

Embodiment 3

[0057] Preparation of leather fatliquor:

[0058] In parts by weight, 100 parts of oxidized-sulfited fish oil, 0.25 parts of ascorbyl palmitate and 0.15 parts of salicylic acid were placed in a reactor and stirred at a temperature of 50°C for 3 h to obtain a low-cost, high-efficiency antioxidant leather fatliquor.

[0059] It was determined that the oxidation stability time of the leather fatliquor in this example was 28.6 h.

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Abstract

The invention belongs to the technical field of leather auxiliaries, and discloses a leather fatliquor and a preparation method thereof. Salicylic acid and an antioxidant in the leather fatliquor form a synergistic antioxidant system, the antioxidant performance of the fatliquor can be remarkably improved after the salicylic acid and the antioxidant are mixed with the modified natural grease, and compared with a single antioxidant used in the prior art, the leather fatliquor has more efficient and more lasting antioxidant activity. The addition of the salicylic acid greatly improves the antioxidant activity of the antioxidant, so that the fatliquor can be endowed with excellent oxidation stability by using a small amount of antioxidant, and the production cost of the antioxidant leather fatliquor is effectively reduced. The antioxidant fatliquoring agent with excellent performance can be prepared by adopting a relatively low amount of antioxidant, and the production cost of the fatliquoring agent is remarkably reduced compared with that of the antioxidant used in the prior art.

Description

technical field [0001] The invention relates to the technical field of leather auxiliary agents, in particular to a leather fatliquoring agent and a preparation method thereof. Background technique [0002] Fatliquoring of leather refers to the treatment of leather with a fatliquoring agent. The purpose is to wrap the oil on the surface of the leather fibers through physical adsorption and chemical bonding, and form a layer of lubricating oil film between the fibers, so that the fibers are in a separated state and increase The fibers are mutually mobile, thus imparting good physical and sensory properties to the leather. Natural animal and vegetable oils and their chemically modified products have become the most commonly used leather fatliquoring agents because they can impart specific oily feeling, sensory and physical properties to leather. However, natural oil leather fatliquor contains a large amount of unsaturated double bonds, which makes it prone to oxidation and ra...

Claims

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Application Information

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IPC IPC(8): C14C9/02
CPCC14C9/02
Inventor 余跃曾运航石碧王亚楠周建飞
Owner SICHUAN UNIV