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Synthesis method and application of degradable ionic liquid surfactant

A technology of surfactants and ionic liquids, applied in the direction of cationic surface active compounds, applications, detergent compositions, etc., can solve the problems of environmental pollution, poor degradation performance of ionic liquid surfactants, etc., and achieve simple preparation and good surface activity , enhance the effect of lipophilic effect

Pending Publication Date: 2020-09-11
HEILONGJIANG HEIKE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention solves the technical problem of poor degradation performance of existing ionic liquid surfactants and serious environmental pollution, and provides a synthesis method and application of degradable ionic liquid surfactants

Method used

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  • Synthesis method and application of degradable ionic liquid surfactant
  • Synthesis method and application of degradable ionic liquid surfactant
  • Synthesis method and application of degradable ionic liquid surfactant

Examples

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specific Embodiment approach 1

[0021] Specific embodiment one: the synthetic method of a kind of degradable ionic liquid surfactant of this embodiment, specifically carry out according to the following steps:

[0022] 1. Add bromoethanol and linear alkanoic acid into the reaction flask, heat it in a water bath to a temperature of 60-90°C, add concentrated sulfuric acid, stir and react for 6-24 hours, then wash with dichloromethane and deionized water successively, and extract The water phase was combined with the organic phase, and the dichloromethane was removed by rotary evaporation to obtain a crude product; the crude product was added to a methanol solution for recrystallization, and then washed repeatedly with cooled anhydrous methanol to obtain bromoethyl alkanoate;

[0023] 2. Add 3-butylpyridine and the bromoethyl alkanoate prepared in step 1 to toluene, heat and reflux for 12 to 24 hours, remove the solvent toluene by rotary evaporation, and recrystallize petroleum ether to obtain N-ethyl alkanoate-...

specific Embodiment approach 2

[0025] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the linear alkanoic acid in step 1 is dodecanoic acid, tetradecanoic acid or hexadecanoic acid. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0026] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: in step one, the mol ratio of bromoethanol, linear alkanoic acid and concentrated sulfuric acid is 1: (1.0~1.5): (0.01~0.05). Others are the same as in the first or second embodiment.

[0027] The mass concentration of concentrated sulfuric acid in this embodiment is 98%.

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Abstract

The invention discloses a synthesis method and application of a degradable ionic liquid surfactant, and relates to the field of surfactant preparation and application. The invention aims to solve thetechnical problems of poor degradability and serious environmental pollution of the existing ionic liquid surfactant. The method comprises the following steps: carrying out esterification reaction onbromoethanol and straight-chain alkanoic acid to obtain a long-chain ester group, carrying out alkylation reaction on the long-chain ester group and 3-butylpyridine, adding amino acid sodium salt, andreplacing bromide ions through a semipermeable membrane to obtain the product. The degradable ionic liquid surfactant prepared by the invention has good surface activity, contains a lipid group in the structure, is easy to degrade, and has good broad-spectrum antibacterial activity. The degradable ionic liquid surfactant prepared by the invention is used as an antibacterial component and a surface active component to be applied to wash supplies.

Description

technical field [0001] The invention relates to the field of surfactant preparation and application. Background technique [0002] Surfactants are known as "industrial monosodium glutamate". They are widely used in the national market due to their functions of washing, wetting or anti-sticking, emulsifying or breaking, foaming or defoaming, solubilizing, dispersing, antiseptic, and antistatic. all areas of economic development. With the rapid development of science and technology and economy, traditional surfactants can no longer meet the needs of people's production and life, and the requirements for the surfactant industry are getting higher and higher. Ionic liquid surfactants are salts composed of organic cations and inorganic or organic anions that are in a liquid state at or near room temperature, and have both the properties of ionic liquids and surfactants. Similar to traditional cationic surfactants, ionic liquid surfactants are composed of a charged hydrophilic h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D213/89B01F17/32B01F17/18A01N43/40A01P1/00A01P3/00C11D1/62C11D3/48C09K23/18C09K23/32
CPCC07D213/89A01N43/40C11D1/62C11D3/48C09K23/00
Inventor 付东谢洋王珏阚侃李鹏杨帆隋新黄波张晓臣
Owner HEILONGJIANG HEIKE TECH CO LTD
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