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Preparation method of oil-based sulfosuccinic acid monoester type amphoteric fatting agent

A technology of sulfosuccinic acid and fatliquor, which is applied in the direction of fatty acid esterification, fatty acid production, fatty acid chemical modification, etc. problem, to achieve the effect of improving the effect of fatliquoring and moisturizing, the effect is better, the dyeing rate and the fastness to dry and wet rubbing are improved.

Inactive Publication Date: 2020-07-10
广东西顿新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the amphoteric fatliquor obtained in the above research has the problem of a single structure and composition. The oily molecular structure has not been chemically modified, and the molecular structure of the oily component does not contain active groups combined with leather fibers. risk of migration

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] This embodiment provides an oil-based sulfosuccinic acid monoester type amphoteric fatliquoring agent, comprising the following steps:

[0028] (1) Triethanolamine modification of grease:

[0029] Take by weighing 950 parts of rapeseed oil and add in the reactor with agitator and thermometer, add 298 parts of triethanolamine and 6.0 parts of sodium methylate in the reactor under the condition of stirring, after mixing uniformly, the temperature is raised to 225 ℃, and keep warm for 6h to obtain intermediate A.

[0030] (2) Esterification modification:

[0031] Add 290 parts by mass fraction of maleic anhydride and 7.8 parts by mass fraction of p-toluenesulfonic acid to intermediate A, mix uniformly, raise the temperature to 90°C and keep it warm for 3 hours to obtain intermediate B.

[0032] (3) Sulfonation reaction:

[0033] Lower the temperature of intermediate B to 50°C, add 380 parts of sodium sulfite dissolved in water in portions within 1.5 hours, raise the tem...

Embodiment 2

[0035] This embodiment provides an oil-based sulfosuccinic acid monoester type amphoteric fatliquoring agent, comprising the following steps:

[0036] (1) Triethanolamine modification of grease:

[0037] Weigh 850 parts of rice bran oil into a reactor with a stirrer and a thermometer, add 160 parts of triethanolamine and 5.0 parts of sodium hydroxide into the reactor under agitation, mix well, and place under nitrogen protection Raise the temperature to 230°C, and keep the reaction for 4.5h to obtain Intermediate A.

[0038] (2) Esterification modification:

[0039] Add 210 parts by mass fraction of maleic anhydride and 6.5 parts by mass fraction of p-toluenesulfonic acid to intermediate A, mix well, heat up to 95°C and keep it warm for 3.5 hours to obtain intermediate B.

[0040] (3) Sulfonation reaction:

[0041] Lower the temperature of intermediate B to 55°C, add 270 parts of sodium sulfite dissolved in water in portions within 1 hour, raise the temperature to 80°C and ...

Embodiment 3

[0043] This embodiment provides an oil-based sulfosuccinic acid monoester type amphoteric fatliquoring agent, comprising the following steps:

[0044] (1) Triethanolamine modification of grease:

[0045] Weigh 900 parts of palm oil into a reactor with a stirrer and a thermometer, add 225 parts of triethanolamine and 5.5 parts of sodium methoxide into the reactor under stirring conditions, mix well, and heat up under nitrogen protection to 235°C, and keep the temperature for 5h to obtain Intermediate A.

[0046] (2) Esterification modification:

[0047] Add 250 parts by mass fraction of maleic anhydride and 7.1 parts by mass fraction of p-toluenesulfonic acid to intermediate A, mix well, heat up to 100°C and keep it warm for 4 hours to obtain intermediate B.

[0048] (3) Sulfonation reaction:

[0049] Lower the temperature of intermediate B to 60°C, add 320 parts of sodium sulfite dissolved in water in portions within 1 hour, raise the temperature to 70°C and keep it warm for ...

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Abstract

The invention relates to the technical field of leather chemical production, and particularly discloses a preparation method of an oil-based sulfosuccinic acid monoester type amphoteric fatting agent.According to the method, natural animal and vegetable fat with a fatty acid triglycerol structure is used as a raw material, triethanolamine is added to modify the natural animal and vegetable fat toobtain a mixed product of fatty acid triethanolamine monoester, fatty acid triethanolamine diester, fatty acid monoglyceride, fatty acid diglyceride and the like, esterification modification is performed on the mixed product by using maleic anhydride, and finally sulfonation reaction is carried out by using sulfite, thereby obtaining the oil-based sulfosuccinic acid monoester type amphoteric fatting agent. The method overcomes the defects in the prior art, the amphoteric fatting agent prepared through the method has good acid resistance, alkali resistance, salt resistance and electrolyte resistance, the components are various, the structures are different, the comprehensive fatting effect is good, and due to the fact that natural animal and vegetable fat is adopted as the main raw material, the fatting and moistening effect of the product can be obviously improved.

Description

technical field [0001] The invention relates to the technical field of leather chemical production, in particular to a preparation method of an oil-based sulfosuccinic acid monoester type amphoteric fatliquoring agent. Background technique [0002] Leather fatliquor plays a very unique role in leather production. It not only maintains the softness of leather fibers, but also endows leather products with good oily feeling, fullness and elasticity. Generally, leather fatliquor has multiple active groups, such as carboxyl, phosphate, etc., which can complex with chromium salt and other multivalent metal salts, and at the same time combine with leather collagen fibers, which can endow leather with long-term fatliquoring effect. However, due to the water quality problems in the leather fatliquoring process and the modern leather technology requires multiple processes to implement fatliquoring, higher requirements are placed on the stability of leather fatliquoring agents under va...

Claims

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Application Information

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IPC IPC(8): C11C3/10C11C3/00C14C9/02
CPCC11C3/00C11C3/10C14C9/02
Inventor 毕俊林
Owner 广东西顿新材料科技有限公司
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