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Mink oil betaine surfactant and preparation method thereof

A technology of surfactant and mink oil, applied in the field of mink oil betaine surfactant and preparation thereof, can solve problems such as the performance of mink oil not being fully exerted

Inactive Publication Date: 2020-08-25
JIANGNAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patent CN1031250A discloses the preparation method of mink oil ethyl ester, which improves the performance of mink oil to a certain extent and expands its application range, but the performance of mink oil has not yet been fully utilized

Method used

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  • Mink oil betaine surfactant and preparation method thereof
  • Mink oil betaine surfactant and preparation method thereof
  • Mink oil betaine surfactant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] A preparation method of mink oil amidopropyl betaine surfactant comprises the following steps:

[0052] (1) Amidation reaction: Add mink oil (100.0g), 3-dimethylaminopropylamine (105.0g) and pyridine (10.0g) into a round bottom flask, and react at 160°C for 5h; after the reaction, depressurize Impurities such as by-products, pyridine and unreacted 3-dimethylaminopropylamine were removed by distillation, and then 5% Na 2 CO 3 solution, brine, and water to wash out unreacted components, and dry to obtain mink oil amidopropyl dimethyl tertiary amine;

[0053] (2) Quaternization reaction: Mink oil amidopropyl dimethyl tertiary amine (50g), sodium chloroacetate (20g), isopropanol / water (1.5: 1, 50mL), stirred at room temperature until the sodium chloroacetate was completely dissolved, then adjusted the pH value at 7-8 with 10% NaOH solution, and reacted at 80°C for 6h; after the reaction, the isopropanol and water were removed by rotary evaporation, and then added 2 times...

Embodiment 2

[0058] A preparation method of mink oil amidopropyl betaine surfactant comprises the following steps:

[0059] (1) Amidation reaction: Add mink oil (80.0g), 3-dimethylaminopropylamine (96.0g), toluene (100mL) and KOH (10.0g) in a round bottom flask, and react at 80°C for 10h; After the end, impurities such as by-products, toluene and unreacted 3-dimethylaminopropylamine were removed by distillation under reduced pressure; 2 CO 3 solution, brine, and water to wash out unreacted components, and dry to obtain mink oil amidopropyl dimethyl tertiary amine;

[0060] (2) Quaternization reaction: Mink oil amidopropyl dimethyl tertiary amine (50g), sodium chloroacetate (30g), isopropanol / water (2.0: 1, 80mL), stirred at room temperature until the sodium chloroacetate was completely dissolved, then adjusted the pH value to 7-8 with 20% NaOH solution, and reacted at 50°C for 10h; 2.5 times the volume of isopropanol, stirred and filtered to remove unreacted sodium chloroacetate and oth...

Embodiment 3

[0062]A preparation method of mink oil amidopropyl betaine surfactant comprises the following steps:

[0063] (1) Amidation reaction: Add mink oil (100.0g), 3-dimethylaminopropylamine (110.0g), triethylamine (20mL) and NaOH (5.0g) into a round bottom flask, and react at 100°C for 8h After the reaction finishes, impurities such as by-product, triethylamine and unreacted 3-dimethylaminopropylamine are removed by distillation under reduced pressure; Then use 5% Na 2 CO 3 solution, brine, and water to wash out unreacted components, and dry to obtain mink oil amidopropyl dimethyl tertiary amine;

[0064] (2) Quaternization reaction: Mink oil amidopropyl dimethyl tertiary amine (50g), sodium chloroacetate (25g), isopropanol / water (2.0: 1, 60mL), stirred at room temperature until the sodium chloroacetate was completely dissolved, then adjusted the pH value to 7-8 with 15% NaOH solution, and reacted at 100°C for 4 hours; after the reaction, the isopropanol and water were removed by ...

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Abstract

The invention discloses a mink oil betaine surfactant and a preparation method thereof, and belongs to the technical field of surfactants, colloids and interface chemistry. The preparation method of the betaine type surfactant comprises the following steps of: (1) carrying out amidation reaction on mink oil and 3-dimethylaminopropylamine to obtain mink oil amide propyl dimethyl tertiary amine; and(2) carrying out quaternization reaction on the mink oil amide propyl dimethyl tertiary amine and sodium chloroacetate to obtain the mink oil betaine surfactant. The molecular structure of the surfactant disclosed by the invention takes long-chain alkyl of mink oil as a hydrophobic group and a betaine characteristic group, so that the performance of the mink oil is improved; the surfactant has better foam stability and mild performance; the emulsifying property of the surfactant is obviously superior to that of a dodecyl betaine surfactant; and the surfactant has good biocompatibility. The preparation method is simple; and the raw materials are natural and green.

Description

technical field [0001] The invention relates to a mink oil betaine surfactant and a preparation method thereof, belonging to the technical field of surfactants, colloids and interface chemistry. Background technique [0002] Surfactants have important functions such as wetting, foaming, dispersing, emulsifying, solubilizing and washing, and play an important role in daily chemical, chemical, light industry textile, food science, life science, environmental science, pharmaceutical industry and other technical fields. Function, known as "industrial monosodium glutamate" laudatory title. Usually, surfactant molecules contain a hydrophilic group and a hydrophobic group, and the performance of the surfactant can be optimized by adjusting the carbon chain length and group structure of the hydrophilic and hydrophobic groups. Surfactants are mainly anionic surfactants and nonionic surfactants. These two types of surfactants will cause pollution because they are generally difficult ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F17/28B01F17/22B01F17/18C07C231/12C07C233/36C07C233/38C09K23/28C09K23/18C09K23/22
CPCC07C231/12C07C231/02C09K23/00
Inventor 巩凯张大权李存浩刘彦其
Owner JIANGNAN UNIV
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