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Composite sulfited vegetable oil leather fat-liquoring agent and method for preparing same

A technology of leather fatliquor and sulfitation, applied in leather impregnation, small raw hide/large raw hide/leather/fur treatment, small raw hide/large raw hide/leather skin/fur chemical treatment, etc., can solve production process equipment investment High, affecting the quality of fatliquoring leather, and the product has peculiar smell, etc., to achieve good low temperature storage, long-term maintenance of fatliquoring effect, and good fatliquoring performance

Inactive Publication Date: 2008-10-15
WENZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The sulfur trioxide sulfonation method is to directly use SO 3 The sulfonation reagent reacts with animal and vegetable oil or mineral oil. This method has high sulfonation efficiency and is continuous production. However, the production process requires high equipment investment and is difficult to be popularized in leather chemical enterprises.
However, this method usually requires high saturation of raw materials, and the product has peculiar smell, which will affect the quality of fatliquored leather

Method used

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  • Composite sulfited vegetable oil leather fat-liquoring agent and method for preparing same
  • Composite sulfited vegetable oil leather fat-liquoring agent and method for preparing same
  • Composite sulfited vegetable oil leather fat-liquoring agent and method for preparing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037]Add 100.0 g of rapeseed oil and 7.0 g of monoethanolamine into a dry four-necked glass flask equipped with a stirrer and a condenser, and raise the temperature to 135° C. for amidation reaction. After the reaction is carried out for 2.5 hours, amidated rapeseed oil is obtained. The temperature of the system was lowered to 75° C., 22 g of maleic anhydride was added thereto, and then the temperature was raised to 95° C., and reacted for 3 hours to obtain amidated rapeseed oil succinic acid monoester. Then lower the temperature of the system to 80°C, install an oil-water separator on the reactor, add 41.5g of n-butanol and 0.85g of p-toluenesulfonic acid, raise the temperature to 130°C, reflux for 2-3 hours, and cool down after the theoretical amount of water is generated. to 120°C, distill off unreacted n-butanol under reduced pressure to obtain amidated rapeseed oil-n-butanol succinic acid diester. Then lower the system temperature to 70°C, add 89g of sodium bisulfite aqu...

Embodiment 2

[0039] Add 100.0 g of palm oil and 7.2 g of monoethanolamine into a dry four-necked glass flask equipped with a stirrer and a condenser, and raise the temperature to 135° C. for amidation reaction. After the reaction is carried out for 2.5 hours, amidated rapeseed oil is obtained. The temperature of the system was lowered to 75° C., 21.97 g of maleic anhydride was added thereto, and then the temperature was raised to 95° C., and reacted for 3 hours to obtain amidated palm oil succinic acid monoester. Then lower the temperature of the system to 80°C, install an oil-water separator on the reactor, add 41.5g of n-butanol and 0.9g of p-toluenesulfonic acid, raise the temperature to 130°C, reflux for 2-3 hours, and cool down after the theoretical amount of water is generated. To 120°C, distill off unreacted n-butanol under reduced pressure to obtain amidated palm oil-n-butanol succinic acid diester. Then lower the system temperature to 70°C, add 88g of sodium bisulfite aqueous solu...

Embodiment 3

[0041] Add 100.0 g of rapeseed oil and 9.0 g of monoethanolamine into a dry four-necked glass flask equipped with a stirrer and a condenser, and raise the temperature to 140° C. for amidation reaction. After the reaction is carried out for 2.5 hours, amidated rapeseed oil is obtained. The temperature of the system was lowered to 75° C., 27.47 g of maleic anhydride was added thereto, and then the temperature was raised to 95° C., and reacted for 3 hours to obtain amidated rapeseed oil succinic acid monoester. Then lower the temperature of the system to 80°C, install an oil-water separator on the reactor, add 51.86g of n-butanol and 0.94g of p-toluenesulfonic acid, raise the temperature to 130°C, reflux for 2-3 hours, and cool down after the theoretical amount of water is generated. to 120°C, distill off unreacted n-butanol under reduced pressure to obtain amidated rapeseed oil-n-butanol succinic acid diester. Then lower the system temperature to 70°C, add 111g of sodium bisulfi...

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Abstract

The invention relates to a complex sulfited vegetable oil leather fat liquor and a method for preparing the same. The complex fat liquor contains sulfited vegetable oil, granulesten, chloridized soybean oil methyl ester, alkyl sulfonyl amine, liquid paraffin and auxiliary emulsifying agent. Firstly, vegetable oil is reacted with monoethanol amine to obtain amidated vegetable oil, the amidated vegetable oil is reacted with maleic anhydride to obtain succinic acid monoester, then the succinic acid monoester undergoes an esterification reaction with low carbon alcohol to obtain succinic acid diester, and the succinic acid diester is reacted with sodium bisulfite to obtain the sulfited vegetable oil. Then the granulesten, the chloridized soybean oil methyl ester, the alkyl sulfonyl amine, the liquid paraffin and the auxiliary emulsifying agent are imported into the sulfited vegetable oil, and the complex sulfited vegetable oil leather fat liquor can be obtained by emulsifying and adjusting contents of effective substances. The product has strong electrolyte-resistant ability, leather using the product to make a fat liqoring is soft and moist and has good elasticity, and the fat-liquoring effect can be maintained for a long time.

Description

technical field [0001] The invention belongs to the technical field of leather chemical industry, in particular to a composite leather fatliquoring agent containing sulfited vegetable oil and a preparation method thereof. Background technique [0002] Fatliquor is the most used leather chemical material in leather production, and it is also one of the important chemical materials in leather processing. It can not only lubricate the leather fibers, prevent the leather from being stiff and cracking, but also make the leather have corresponding toughness and softness, and maintain its strength. It is an important factor affecting the quality and performance of leather. [0003] Fatliquor can be divided into sulfonates (sulfites), sulfates, phosphates, sulfosuccinates and other leather fatliquors according to the different hydrophilic groups. Among them, sulfonate or sulfite leather fatliquor has good emulsification, permeability and acid and alkali resistance, and is a type of...

Claims

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Application Information

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IPC IPC(8): C14C9/02
Inventor 邹祥龙兰云军柴玉叶银德海周建飞
Owner WENZHOU UNIVERSITY
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