Method for preparing polymer fat-liquoring agent of sulfosuccinate structure

A sulfosuccinate and polymer technology, which is applied in small raw hide/large hide/leather/fur treatment, leather impregnation, application, etc. Poor performance and other problems, to achieve the effect of reducing COD content, strong binding ability, and many binding groups

Inactive Publication Date: 2017-05-31
WENZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the copolymerization activity of maleic acid ester is very low. When it is copolymerized with hydrophilic monomers such as acrylic acid or methacrylic acid, the residual amount of intermediates is large, the composition and distribution of polymer products are very different, and the application performance is not good.
When styrene, vinyl acetate and other strong hydrophobic monomers are used to copolymerize with maleic acid, the copolymerization effect is better, but the polymerization process requires the use of organic solvents, which does not meet environmental protection requirements, and the performance of the product is not good enough to meet Requirements for tannery fatliquoring process

Method used

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  • Method for preparing polymer fat-liquoring agent of sulfosuccinate structure

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Comparison scheme
Effect test

Embodiment 1

[0018] A kind of preparation method that has sulfosuccinate salt structure polymer fatliquoring agent, specifically comprises the following several steps:

[0019] (1) Add 0.1mol 6-polyglycerol and 0.4mol stearic acid into the reactor, blow in nitrogen, raise the temperature to 240°C, and perform esterification reaction for 3 hours to obtain Intermediate A;

[0020] (2) Intermediate A was cooled to 70°C, 0.4mol maleic anhydride was added, the temperature was raised to 90°C, and the esterification reaction was carried out for 3 hours to obtain Intermediate B;

[0021] (3) Cool down the intermediate B to 70°C, add 168g of 30% sodium sulfite aqueous solution, react at 85°C for 3 hours, and obtain a polymer fatliquoring agent with a sulfosuccinate salt structure after cooling down.

Embodiment 2

[0023] A kind of preparation method that has sulfosuccinate salt structure polymer fatliquoring agent, specifically comprises the following several steps:

[0024] (1) Add 0.1 mol of 10-polyglycerol and 0.6 mol of stearic acid into the reactor, blow nitrogen gas, heat up to 240°C, and perform esterification reaction for 3 hours to obtain Intermediate A;

[0025] (2) Intermediate A was cooled to 70°C, 0.6mol maleic anhydride was added, the temperature was raised to 90°C, and the esterification reaction was carried out for 3 hours to obtain Intermediate B;

[0026] (3) Cool the intermediate B to 70°C, add 252g of 30% sodium sulfite aqueous solution, react at 85°C for 3 hours, and obtain a polymer fatliquoring agent with a sulfosuccinate salt structure after cooling down.

Embodiment 3

[0028] A kind of preparation method that has sulfosuccinate salt structure polymer fatliquoring agent, specifically comprises the following several steps:

[0029] (1) Add 0.1mol 20-polyglycerol and 1.1mol stearic acid into the reactor, blow nitrogen gas, raise the temperature to 240°C, and perform esterification reaction for 3 hours to obtain intermediate A;

[0030] (2) Intermediate A was cooled to 70°C, 1.1mol of maleic anhydride was added, the temperature was raised to 90°C, and the esterification reaction was carried out for 3 hours to obtain Intermediate B;

[0031] (3) Cool the intermediate B to 70°C, add 462g of 30% sodium sulfite aqueous solution, react at 85°C for 3h, and obtain a polymer fatliquoring agent with a sulfosuccinate salt structure after cooling down.

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Abstract

The invention relates to a method for preparing a polymer fat-liquoring agent of a sulfosuccinate structure. The method comprises the following steps: (1) putting polyglycerol and long-chain fatty acid into a reactor, and introducing nitrogen to implement esterification reaction so as to obtain an intermediate A; (2) cooling the intermediate A to be at a temperature of 60-70 DEG C, and adding maleic anhydride for esterification reaction so as to obtain an intermediate B; (3) cooling the intermediate B to be at a temperature of 60-70 DEG C, and adding a sulfite solution for sulfitation reaction, and cooling, so as to obtain the polymer fat-liquoring agent of the sulfosuccinate structure. By adopting the technical scheme of the invention, the invention provides the method for preparing the polymer fat-liquoring agent of the sulfosuccinate structure, the method is simple in process and clean and environmental-friendly, and a prepared product is excellent in property such as acid resistance stability, fat-liquoring effect, filling property and solvent suction extraction resistance, and the content of COD (Chemical Oxygen Demand) of a waste liquid can be reduced.

Description

technical field [0001] The invention relates to a method for preparing a fatliquoring agent, in particular to a method for preparing a polymer fatliquoring agent with a sulfosuccinate salt structure. Background technique [0002] Fatliquor is one of the most used chemicals in the tanning process. The traditional fatliquor is mainly a modified product of small molecule natural animal and vegetable oils, its function is to lubricate the leather fiber and give the leather a soft and comfortable feel. Polymer fatliquor is a multi-functional leather chemical. Its molecular structure has both long-chain alkanes that can lubricate leather fibers and polymers containing hydrophilic groups such as carboxyl groups. This structure makes it lubricate fibers and at the same time It also has a filling function. Compared with low molecular weight fatliquors, polymer fatliquors have the following characteristics: (1) Combine the functions of retanning and fatliquor into one, reducing the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/48C14C9/02
CPCC08G65/48C14C9/02
Inventor 邹祥龙任便利柴玉叶兰云军许晓红
Owner WENZHOU UNIVERSITY
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