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A kind of amphoteric sulfonate type polymerizable surfactant and its synthesis method

A technology of amphoteric sulfonate and surfactant, which is applied in the preparation of sulfonic acid, chemical instruments and methods, organic chemistry, etc., can solve the problems of complex preparation, difficult separation and purification, and high cost, and achieve simple preparation method and easy separation and purification , low-cost effect

Active Publication Date: 2016-01-13
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, the zwitterionic surfactant monomer is rarely reported due to its complicated preparation, high cost, and difficulty in separation and purification.

Method used

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  • A kind of amphoteric sulfonate type polymerizable surfactant and its synthesis method
  • A kind of amphoteric sulfonate type polymerizable surfactant and its synthesis method
  • A kind of amphoteric sulfonate type polymerizable surfactant and its synthesis method

Examples

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Embodiment 1

[0028] Dissolve the surfactant monomer octadecyldimethyl tertiary amine (297.6g) and allyl bromide (240g) in 500ml of ethanol, stir at 60°C under nitrogen protection, react for 24h, and distill under reduced pressure The solvent was removed to give the crude product as a light yellow solid. Add an appropriate amount of acetone and recrystallize the crude product to obtain white powdery crystals, i.e. surfactant monomer octadecyldimethylallyl ammonium bromide (C 18 DMAAB).

[0029] Add long-chain alkyl dimethyl allyl ammonium bromide (209.3 g) and acrylonitrile (265.3 g) into the three-necked flask and stir. Control the temperature of the reaction system to 0° C. with an ice-salt bath, and then add 1.2 to 20 mol of oleum dropwise through a constant pressure dropping funnel. After the dropwise addition was completed, stir for 0.5 h, then raise the temperature to 40° C., and react at a constant temperature for 36 h. After the reaction, the reaction system was cooled, and exces...

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Abstract

The invention discloses a class of amphoteric sulfonate-type polymerizable surfactants and a synthesis method thereof. The surfactants are synthesized through the following steps: (1) 1 mol of long-chain alkyl dimethyl tertiary amine, 1.2-2 mol of allyl Add bromide into ethanol, stir and react for 7~48h at 40-80oC under nitrogen protection conditions to obtain long-chain alkyl dimethyl allyl ammonium bromide; (2) add 1mol long-chain alkyl dimethyl alkene Add propylammonium bromide, 1.2~20mol acrylonitrile into a three-necked flask, control the reaction system to 0oC, add 1.2~20mol oleum dropwise, stir for 0.5-2h, then heat up to 20-50oC, react for 12-48h, and get Amphoteric sulfonate type polymerizable surfactant. The surfactant not only has good surface activity, but also has good polymerization performance, and its synthesis method is reliable in principle, easy to operate, low in cost, easy to purify and separate, and has broad market prospects.

Description

technical field [0001] The invention relates to a class of amphoteric sulfonate type surfactant monomer and a synthesis method thereof. Background technique [0002] Surfactant monomer (polymerizablesurfactant, orsurfmer) is a functional monomer. Its molecular structure contains not only the hydrophilic groups and lipophilic groups of traditional surfactants, but also polymerizable functional groups, such as allyl and vinyl groups. This special molecular structure endows it with unique physical and chemical properties. This type of surfactant monomer is similar to traditional surfactants in that it can be dissolved in water and has surface activity; and because it contains polymerizable functional groups, under certain conditions, it can undergo homopolymerization or homopolymerization like conventional monomers. copolymerization reaction. [0003] In the past three decades, due to these unique properties of surfactant monomers, many scholars have paid attention to them, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C309/15C07C303/06B01F17/18B01F17/22C09K23/18C09K23/22
Inventor 叶仲斌张轩陈洪韩利娟蒋金芳宋佳蓉杨琼肖林申玲红
Owner SOUTHWEST PETROLEUM UNIV