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A kind of preparation method of anionic fluorescent fatliquoring agent

An anionic, fatliquor technology, applied in the field of leather chemicals, to achieve good compatibility

Active Publication Date: 2022-06-03
QILU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there is no report about the anionic fluorescent-labeled fatliquoring agent used to study the mass transfer and distribution of anionic fatliquoring agent in leather

Method used

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  • A kind of preparation method of anionic fluorescent fatliquoring agent
  • A kind of preparation method of anionic fluorescent fatliquoring agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Take 100 parts of castor oil, add 19.6 parts of maleic anhydride, and react at 105° C. for 3 hours to obtain intermediate product A. Add 1.2 parts of A to 50 parts of dimethylformamide, then add 0.35 parts of 5-aminofluorescein and 0.48 parts of 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride, Reaction at 40 ° C for 5 h to obtain product B. B was added to 100 parts of dichloromethane, and then 50 parts of water was added, and the mixture was evenly mixed and then left to stand for layers. Collect the organic phase, then add 100 parts of water, mix well, and then let stand for layers. The organic phase was collected, 150 parts of water was added, mixed evenly and then left to stand for layers, the organic phase was collected, and the dichloromethane was removed by rotary evaporation under reduced pressure to obtain product C. Take 1 part of C, add 5 parts of ethylene glycol monobutyl ether, mix evenly, and then add 100 parts of commercial anionic fatliquor ...

Embodiment 2

[0028] Take 50 parts of natural phospholipids and 50 parts of castor oil, add 20 parts of itaconic anhydride, and react at 85°C for 4 hours to obtain intermediate product A. Add 1.2 parts of A to 25 parts of dimethyl sulfoxide, then add 0.35 parts of 5-aminofluorescein and 0.48 parts of 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride, in Reaction at 20°C for 10h to obtain product B. B was added to 50 parts of dichloromethane, and then 50 parts of water was added, and the mixture was evenly mixed, and then allowed to stand for layers. Collect the organic phase, then add 100 parts of water, mix well, and then let stand for layers. The organic phase was collected, 150 parts of water was added, mixed evenly and then left to stand for layers, the organic phase was collected, and the dichloromethane was removed by rotary evaporation under reduced pressure to obtain product C. Take 1 part of C, add 10 parts of ethylene glycol monobutyl ether, mix evenly, and then add 20...

Embodiment 3

[0030] Take 40 parts of stearic acid monoglyceride, add 15 parts of succinic anhydride, and react at 90°C for 2 hours to obtain intermediate product A. Take 1 part of A and add it to 100 parts of dimethylformamide, then add 1.2 parts of 5-aminofluorescein and 2 parts of 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride, Reaction at 20 ° C for 10 h to obtain product B. B was added to 100 parts of dichloromethane, and then 100 parts of water was added, and the mixture was evenly mixed and then left to stand for layers. Collect the organic phase, then add 200 parts of water, mix well, and then let stand for stratification. The organic phase was collected, added with 200 parts of water, mixed evenly, and then allowed to stand for layers. Take 1 part of C, add 8 parts of ethylene glycol monobutyl ether, mix well, and then add 50 parts of oxidized-sulfite fish oil anionic fatliquor together to obtain an anionic fluorescent labeling fatliquor.

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Abstract

The present invention relates to a kind of preparation method of anionic fluorescent fatliquoring agent, and the steps are as follows: (1) react grease and acid anhydride to obtain intermediate product A, then dissolve A in dimethylformamide or dimethyl sulfoxide and add 5- Aminofluorescein and 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride react to make product B, (2) add dichloromethane and water in product B, fully After mixing evenly, let it stand for layering, and collect the organic phase; the collected organic phase was distilled off under reduced pressure on a rotary evaporator to remove dichloromethane to obtain a fluorescent marker C, (3) take C and add ethylene glycol monobutyl ether, After mixing evenly, add them together to the commercial anionic fatliquoring agent to obtain the product. In the present invention, fluorescent molecules are covalently combined with oil molecules, and the molecular structure of the obtained fluorescent marker is similar to that of general-purpose tanning fatliquor, has very good compatibility, and has similar penetration behavior in leather, and can It can well reflect the distribution of fatliquor in leather.

Description

technical field [0001] The invention belongs to the field of leather chemicals, in particular to a preparation method of an anionic fatliquoring agent with fluorescent properties. Background technique [0002] Studying the mass transfer characteristics and distribution state of fatliquor in leather has important guiding significance for the development of new leather fatliquor, and is an important method to study the structure-activity relationship of fatliquor. At present, the main method to study the distribution of fatliquor in leather is to use lipophilic dyes such as Nyle Sulfate or Sudan Red IV to carry out histological staining of the fatliquored leather. However, the above dyeing methods are complicated and have large errors. The staining process has a great influence on the final result; at the same time, it is difficult to avoid systematic errors caused by the original adipose tissue in the skin; at the same time, it is also difficult to use the staining method to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C14C9/02C09K11/06
CPCC14C9/02C09K11/06C09K2211/1088
Inventor 王玉路靳丽强朱洪霞梁洪蛟
Owner QILU UNIV OF TECH
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