A kind of preparation method of polymaleic anhydride modified camellia oil fatliquoring agent

A technology of polymaleic anhydride and oil fatliquor, which is applied in the fields of small hide/big hide/leather/fur treatment, leather impregnation, animal husbandry, etc. It can solve the problems of lack of active groups and insufficient improvement of leather softness, etc. , to achieve good retanning effect, good modification effect and softness improvement

Active Publication Date: 2020-02-18
JIAXING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Patent No. 200910072432.2 reacts polymaleic anhydride with fatty amine to prepare fatliquoring agent. Patent No. 201010598094.9 reacts polymaleic anhydride and fatty alcohol ether to prepare fatliquoring agent. The above technical solutions are all oligomeric surface active Agents, which do not contain oil and fat, although they can significantly improve the mechanical strength of the leather, they do not significantly improve the softness of the leather
However, since most oils lack active groups, it is difficult to directly modify them with polymaleic anhydride.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A preparation method of polymaleic anhydride modified camellia oil fatliquoring agent, comprising the following steps:

[0023] a. Add 20 parts by mass of polymaleic anhydride and 40 parts by mass of organic solvent into the reactor, heat up to 60°C, and stir until the polymaleic anhydride is completely dissolved;

[0024] b. Add 400 parts by mass of modified camellia oil and 3 parts by mass of catalyst to the reactant, heat up to 90° C., and react for 3 hours;

[0025] c, then the above step b, after the reaction is over, distill under reduced pressure to remove 40% of the organic solvent in the added amount; cool to 45°C, adjust the pH of the reaction system to 6.5 with 20% mass concentration of ammonia water, and adjust the solid content of the product by adding water The polymaleic anhydride modified camellia oil fatliquor was obtained.

[0026] The modified camellia oil in the above steps is prepared by reacting 400 parts by mass of camellia oil and 60 parts by ma...

Embodiment 2

[0032] A preparation method of polymaleic anhydride modified camellia oil fatliquoring agent, comprising the following steps:

[0033] a. Add 22 parts by mass of polymaleic anhydride and 60 parts by mass of organic solvent into the reactor, heat up to 66°C, and stir until the polymaleic anhydride is completely dissolved;

[0034] b. Add 420 parts by mass of modified camellia oil and 5 parts by mass of catalyst to the reactant, heat up to 100° C., and react for 3.5 hours;

[0035] c. Follow the above step b. After the reaction is over, 45% of the organic solvent in the added amount is distilled off under reduced pressure; cooled to 46°C, the pH of the reaction system is adjusted to 6.6 with 22% mass concentration of ammonia water, and the solid content of the product is adjusted by adding water The polymaleic anhydride modified camellia oil fatliquor was prepared.

[0036] The modified camellia oil described in the above steps is prepared by reacting 420 parts by mass of camel...

Embodiment 3

[0042] A preparation method of polymaleic anhydride modified camellia oil fatliquoring agent, comprising the following steps:

[0043] a. Add 25 parts by mass of polymaleic anhydride and 75 parts by mass of organic solvent into the reactor, heat up to 70°C, and stir until polymaleic anhydride is completely dissolved;

[0044] b. Add 450 parts by mass of modified camellia oil and 7 parts by mass of catalyst to the reactant, heat up to 110° C., and react for 4 hours;

[0045] c, following the above step b, after the reaction is finished, 50% of the organic solvent in the added amount is distilled off under reduced pressure; cooled to 50°C, the pH of the reaction system is adjusted to 7.0 with 25% mass concentration of ammonia water, and the solid content of the product is adjusted by adding water The polymaleic anhydride modified camellia oil fatliquor was prepared.

[0046] The modified camellia oil in the above steps is prepared by reacting 450 parts by mass of camellia oil a...

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Abstract

A preparation method of polymaleic anhydride modified camellia oil fatliquor comprises the following steps that 20-25 parts by mass of polymaleic anhydride and 40-75 parts by mass of organic solvent are fed into a reactor, the temperature is raised to 60-70 DEG C, and stirring is conducted until the polymaleic anhydride is completely dissolved; 400-450 parts by mass of modified camellia oil and 3-7 parts by mass of catalyst are added to a reactant, the temperature is raised to 90-110 DEG C, and the reaction is performed for 3-4 h; after the reaction is ended, reduced pressure distillation is conducted to remove organic solvent accounting for 40%-50% of the addition amount; the temperature is cooled to 45-50 DEG C, the pH of the reaction system is adjusted to be 6.5-7.0 with ammonium hydroxide with the mass concentration being 20%-25%, the solid content of the product is adjusted to 25%-35% through supplementation of water, and then the polymaleic anhydride modified camellia oil fatliquor is prepared.

Description

technical field [0001] The invention relates to the technical field of leather chemical production, in particular to a preparation method of polymaleic anhydride modified camellia oil fatliquoring agent. Background technique [0002] Camellia oil is obtained from the seeds of the Camellia oleifera tree, which is one of the oldest woody edible vegetable oils in China. China is the country with the widest distribution of Camellia plants in the world and the largest production base of camellia oil in the world. At present, camellia oil and its supplementary products have been widely used in industries such as food, chemical industry, medicine and cosmetics. At present, there are very few researches on camellia oil by leather scientific and technological workers. [0003] The oligomeric surfactant is a surfactant composed of two or more identical or almost identical structural units, which are connected by a linking group through a chemical bond near its hydrophilic head group ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C14C9/02C08F122/06C08F8/00
CPCC08F8/00C14C9/02C08F122/06
Inventor 洪新球何珠莲李佳佳金琳朝苏荣荣赵春兰刘书瑜
Owner JIAXING UNIV
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