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Leather fatliquoring agent and preparation method thereof

A technology of leather fatliquor and antioxidant, applied in leather impregnation, small raw hide/big raw hide/leather/fur treatment, small raw hide/large raw hide/leather skin/fur chemical treatment, etc., can solve the problem of large amount of antioxidant, Anti-oxidation fatliquoring agent high production cost, to achieve the effect of not easy to oxidize and deteriorate, reduce volatile organic compounds and Cr(VI) content exceeding the standard, and reduce production cost

Active Publication Date: 2022-04-08
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 fatliquoring agent and preparation method thereof
  • Leather fatliquoring agent 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 fatliquoring agent and a preparation method thereof. Salicylic acid and antioxidants in the leather fatliquoring agent of the present invention form a synergistic antioxidant system, which can significantly improve the antioxidant performance of the fatliquoring agent after being mixed with modified natural oils, which is different from the single antioxidant used in the prior art. Compared with, it has more efficient and longer-lasting antioxidant activity. The addition of salicylic acid greatly improves the antioxidant activity of the antioxidant, so that a small amount of antioxidant can endow the fatliquor with excellent oxidation stability, effectively reducing the production cost of the antioxidant leather fatliquor. An antioxidant fatliquoring agent with excellent performance can be prepared by using a relatively low amount of antioxidant, and compared with the amount of antioxidant used in the prior art, the production cost of the fatliquoring agent is significantly reduced.

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