Cashew nut based amide surfactant and preparation method thereof

A technology of surfactant and amides, which is applied in the field of cashew-based amide surfactants and its preparation, can solve problems that need to be further developed, and achieve the effects of excellent emulsification and decontamination performance, high yield, and excellent salt resistance

Inactive Publication Date: 2014-04-30
BEIJING TECHNOLOGY AND BUSINESS UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a surfactant, the research and application development began in recent years. At present, it has been reported that cardanol sulfonate

Method used

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  • Cashew nut based amide surfactant and preparation method thereof
  • Cashew nut based amide surfactant and preparation method thereof
  • Cashew nut based amide surfactant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] 1) Add 42.26g of anacardic acid into a four-neck bottle, slowly heat up to 60°C (2, add 21.54g of thionyl chloride dropwise while stirring, react for 4 hours after the addition, and distill the excess thionyl chloride Rear underpressure distillation obtains 36.01g (2-hydroxyl-5-pentadecyl) benzoyl chloride. 2) 36.01g (2-hydroxyl-5-pentadecyl) benzoyl chloride and 8g alkali are added to the reactor In, after replacing 3 times with vacuum nitrogen, the temperature was raised to 140° C. and 40.10 g of ethylene oxide was added to fully stir, and the polymerization reaction was carried out for 4 hours to obtain 41.07 g (2-hydroxyl ether-5-pentadecyl) benzoyl chloride ( EO=3). 3) Add 41.07g (2-hydroxyether-5-pentadecyl)benzoyl chloride into the four-neck flask, add 6.84g 1,3-propanediamine dropwise under full stirring, and control the reaction temperature at 5°C for 0.5 Hour, purified to obtain 24.24g anacardiamide surfactant. The critical micelle concentration of this cash...

Embodiment 2

[0021] 1) Add 30.17g of anacardic acid into a four-neck bottle, slowly heat up to 50°C, add 11.04g of thionyl chloride dropwise while stirring, react for 3 hours after the addition, distill the excess thionyl chloride and reduce Pressure distillation gave 32.76 g of (2-hydroxy-4-pentadecyl)benzoyl chloride. 2) Add 32.76g (2-hydroxy-5-pentadecyl) benzoyl chloride and 4.13g base to the reaction kettle, replace it with vacuum nitrogen for 3 times, then raise the temperature to 135°C and add 41.26g ethylene oxide Thoroughly stirred and polymerized for 3 hours to obtain 51.20 g of (2-hydroxyether-5-pentadecyl)benzoyl chloride (EO=5). 3) Add 51.20g (2-hydroxyether-5-pentadecyl)benzoyl chloride into the four-neck flask, add 5.74g ethylenediamine dropwise under full stirring, control the reaction temperature at 8°C for 1 hour, and purify 29.42 g of anacardyl amide surfactant was obtained. The critical micelle concentration of this cashew-based surfactant is 2.77×10 -4 mol / L, the su...

Embodiment 3

[0023] 1) Add 34.25g of anacardic acid into a four-neck bottle, slowly heat up to 45°C, add 10.97g of thionyl chloride dropwise while stirring, react for 5 hours after the addition, distill the excess thionyl chloride and reduce Pressure distillation gave 35.10 g of (2-hydroxy-4-pentadecyl)benzoyl chloride. 2) Add 35.10g (2-hydroxy-5-pentadecyl) benzoyl chloride and 4.26g base to the reaction kettle, replace it with vacuum nitrogen for 3 times, then raise the temperature to 145°C and add 43.98g ethylene oxide Thoroughly stirred and polymerized for 5 hours to obtain 59.46 g of (2-hydroxyether-5-pentadecyl)benzoyl chloride (EO=7). 3) Add 59.46g (2-hydroxyether-5-pentadecyl)benzoyl chloride into the four-neck flask, add 8.17g of 1,4-butanediamine dropwise under full stirring, and control the reaction temperature at 10°C for 1.5 Hour, purified to obtain 34.59g anacardiamide surfactant. The critical micelle concentration of this cashew-based surfactant is 3.56×10 -4 mol / L, the s...

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Abstract

The invention discloses a cashew nut based amide surfactant and a preparation method thereof. The cashew nut based amide surfactant is prepared by the following steps: (1) carrying out reaction on cashew nut acid and an acylation agent to obtain (2-hydroxy-5-pentadecyl) benzoyl chloride; (2) carrying out reaction on the (2-hydroxy-5-pentadecyl) benzoyl chloride and ethylene oxide, and introducing an ethylene oxide hydrophilic group on hydroxyl to obtain (2-hydroxy ether-5-pentadecyl) benzoyl chloride; and (3) carrying out reaction on the product obtained in the step (2) and diamine to obtain the cashew nut based amide surfactant. The cashew nut based amide surfactant has the action of well lowering the surface tension of a water phase system, does not have cloud points, is excellent in salt resistance, emulsifying performance and detergency ability and can be widely applied to the industry and daily use chemical fields as a detergent, an emulsifier and the like. The preparation method disclosed by the invention is simple in the process, high in the yield and easy to operate.

Description

technical field [0001] The invention relates to the field of surfactants, in particular to a cashew-based amide surfactant and a preparation method thereof. Background technique [0002] Cashew nut shell liquid is a brown viscous liquid extracted from the shell of the fruit of the cashew nut tree of the tropical paint family plant. Through pyrolysis or supercritical carbon dioxide depressurization, a high-yield cashew nut shell liquid is obtained. Stadeler reported that natural cashew nut shell liquid contains 90% anacardic acid and 10% carphenol. Due to its abundant sources and low price, cardanol is obtained by decarboxylation of anacardic acid in industry, which is used as a raw material for synthetic resins and many industrial fields. As a surfactant, the research and application development began in recent years. At present, it has been reported that cardanol sulfonate and cardanol ether are almost obtained from decarboxylated cardanol, and the varieties and applicatio...

Claims

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Application Information

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IPC IPC(8): B01F17/22B01F17/42C07C231/02C07C235/60C09K23/22C09K23/42
Inventor 周雅文苏鹏权徐宝财韩富
Owner BEIJING TECHNOLOGY AND BUSINESS UNIVERSITY
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