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Leather fat-liquoring agent and preparation method thereof

A technology of leather fatliquor and catalyst, which is applied in the directions of leather impregnation, small hide/big hide/leather/fur treatment, small hide/big hide/leather skin/fur chemical treatment, etc., to achieve the elasticity, softness and durability of the leather body Acid-base ability, plumping effect

Inactive Publication Date: 2015-04-01
GUANGDONG FION LEATHER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Modern requirements for leather performance are getting higher and higher. No fatliquoring agent alone can meet the quality requirements of tanning. In fact, most of the fatliquoring agents used in tannery are mixed with different types of fatliquoring agents. Domestic and foreign Some fatliquors with better performance are also researching the functions of various fatliquor components, and a batch of multifunctional or special functional fatliquors are launched

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A leather fatliquor consisting of the following components:

[0021] Add 0.2g of cobalt naphthenate, 5g of sodium bisulfite and 0.2g of sodium dodecyl sulfonate to every 50g of peanut oil.

[0022] The peanut oil is food grade, the cobalt naphthenate and sodium lauryl sulfonate are chemically pure, and the sodium bisulfite is analytically pure.

[0023] The invention also provides a method for preparing a leather fatliquor, which includes the following steps:

[0024] (1) Prepare an aqueous solution of sodium bisulfite with a mass concentration of 30% for use;

[0025] (2) Mix and stir 50 g of peanut oil, 0.2 g of cobalt naphthenate, and 0.2 g of sodium dodecyl sulfonate. The temperature is raised to 80°C and then vigorously stirred for 1 hour;

[0026] (3) Add the sodium bisulfite aqueous solution prepared in step (1) to the mixture in step (2), stir at 78°C for 18 hours, and dehydrate for 10 hours.

Embodiment 2

[0028] A leather fatliquor consisting of the following components:

[0029] Add 0.5 g of cobalt naphthenate, 12.25 g of sodium bisulfite and 0.5 g of sodium dodecyl sulfonate to every 50 g of peanut oil.

[0030] The peanut oil is food grade, the cobalt naphthenate and sodium lauryl sulfonate are chemically pure, and the sodium bisulfite is analytically pure.

[0031] The invention also provides a method for preparing a leather fatliquor, which includes the following steps:

[0032] (1) Prepare an aqueous solution of sodium bisulfite with a mass concentration of 40% for use;

[0033] (2) Mix and stir 50 g of peanut oil, 0.5 g of cobalt naphthenate, and 0.5 g of sodium dodecyl sulfonate. The temperature is raised to 80°C and then vigorously stirred for 1.5 hours;

[0034] (3) Add the sodium bisulfite aqueous solution prepared in step (1) to the mixture in step (2), stir at 82°C for 20 hours, and dehydrate for 10 hours.

Embodiment 3

[0036] A leather fatliquor consisting of the following components:

[0037] Add 0.3 g of cobalt naphthenate, 7.5 g of sodium bisulfite, and 0.3 g of sodium dodecyl sulfonate to every 50 g of peanut oil.

[0038] The peanut oil is food grade, the cobalt naphthenate and sodium lauryl sulfonate are chemically pure, and the sodium bisulfite is analytically pure.

[0039] The invention also provides a method for preparing a leather fatliquor, which includes the following steps:

[0040] (1) Prepare a 32% aqueous sodium bisulfite solution for use;

[0041] (2) Mix and stir 50 g of peanut oil, 0.3 g of cobalt naphthenate, and 0.3 g of sodium dodecyl sulfonate. The temperature is raised to 80°C and then vigorously stirred for 1.2 hours;

[0042] (3) Add the sodium bisulfite aqueous solution prepared in step (1) to the mixture of step (2), stir for 18.5 hours at a temperature of 79°C, and dehydrate for 10 hours.

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PUM

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Abstract

The invention relates to a leather fat-liquoring agent and a preparation method thereof and belongs to the technical field of leather production. The leather fat-liquoring agent comprises the following components: 0.2-0.5g of a catalyst, 5-12.25g of a sulfonating agent and 0.2-0.5g of an emulsifier which are added in per 50g of peanut oil. The preparation method of the leather fat-liquoring agent comprises the following steps of fully mixing peanut oil, the catalyst and the emulsifier while stirring, heating to 80 DEG C and forcibly further stirring for 1-1.5 hours, adding the sulfonating agent, stirring at a temperature of 78-82 DEG C for 18-20 hours and dehydrating for 10 hours to obtain the leather fat-liquoring agent. The leather fat-liquoring agent prepared by the preparation method, which is disclosed by the invention, has good filling effect and the leather has fine grain surface, clear pores and full hand feeling, is elastic and soft and has the advantages of stronger acid / alkali resistance and good hard water resistance.

Description

Technical field [0001] The invention relates to a fatliquor and a preparation method thereof, in particular to a fatliquor and a preparation method thereof, and belongs to the technical field of leather production. Background technique [0002] Leather is an animal skin that has been denatured and is not perishable through physical and chemical processing such as dehairing and tanning. The leather is composed of natural protein fibers tightly woven in a three-dimensional space. There is a special grain layer on the surface, which has natural grain and luster, and feels comfortable. [0003] Leather fatliquoring is one of the important processes in the leather production process. It is to treat the leather with fatliquor under certain technological conditions, so that the leather absorbs a certain amount of oil and gives the leather certain physical and mechanical properties and usability. The function of leather fatliquoring is to make the leather soft, plump, fold-resistant and e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C14C9/02
CPCC14C9/02
Inventor 林斌生
Owner GUANGDONG FION LEATHER CO LTD