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Anionic nonionic gemini surfactant and its preparation method and application

A gemini surface, anion and non-ionic technology, applied in the preparation of ether, sulfonic acid, sulfonate, etc., can solve the problems of long synthetic route of gemini surfactant, unsuitable for industrial production, and limited field application, etc., and achieve easy formation Effects of micelles, good application properties, and good calcium soap dispersion properties

Active Publication Date: 2022-05-06
SHANDONG XINGANG CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In short, although the current research has drawn the conclusion that gemini surfactants have excellent properties, the synthetic route for preparing gemini surfactants is long, difficult, low yield, and expensive, which is basically not suitable for industrial production and limits field applications.

Method used

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  • Anionic nonionic gemini surfactant and its preparation method and application
  • Anionic nonionic gemini surfactant and its preparation method and application
  • Anionic nonionic gemini surfactant and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Embodiment 1: the synthesis of two (octadecyl polyoxyethylene ether (5)-hydroxypropyl)-bisphenol A-sodium disulfonate surfactant

[0052] Add 1.0mol stearyl alcohol polyoxyethylene ether (5EO) into a 2000mL four-neck bottle reaction kettle, heat up to 50-70°C, and after nitrogen replacement, add a catalyst of 1% mass of raw material boron trifluoride ether for complexation Add 0.5-0.6mol of bisphenol A diglycidyl ether dropwise, finish dropping within 0.5-1.5h, keep at 80°C and continue to react for 8h to obtain a nonionic gemini surfactant intermediate;

[0053] Lower the temperature of the above product to 30-50°C, slowly add 3.0mol concentrated sulfuric acid sulfonating agent dropwise under rapid stirring, drop it within 1.5-2.5h, continue to control the temperature at 30-50°C for 3-5h, and the product is treated with sodium hydroxide The solution is hydrolyzed and the pH is adjusted to neutral to obtain the anionic nonionic gemini surfactant sulfonate. The total yi...

Embodiment 2

[0054] Embodiment 2: the synthesis of two (dodecylphenol polyoxyethylene ether (8)-hydroxypropyl)-bisphenol A-bissulfonate sodium surfactant

[0055] Add 1.0mol dodecylphenol polyoxyethylene ether (8EO) into a 2000mL four-neck bottle reactor, heat up to 50-70°C, and after nitrogen replacement, add 10% sodium methoxide solution containing 2% of the raw material mass as Catalyst, remove the methanol solvent brought by the catalyst in a vacuum, add 0.5-0.6mol bisphenol A diglycidyl ether dropwise, drop it within 1.5-3.0h, raise the temperature and keep at 150°C to continue the reaction for 5h, and obtain a nonionic gemini surfactant Intermediate;

[0056] Lower the temperature of the above product to 30-40°C, slowly add 2.5mol of oleum sulfonating agent dropwise under rapid stirring, and drop it within 1.5-2.5h, continue to control the temperature at 30-40°C for 3-5h, and the product is oxidized by hydrogen The potassium solution is hydrolyzed and the pH is adjusted to neutral t...

Embodiment 3

[0057] Embodiment 3: the synthesis of two (oleamide polyoxyethylene ether (7)-hydroxypropyl)-bisphenol A-bissulfonate sodium surfactant

[0058] Add 1.0mol oleic acid amide polyoxyethylene ether (7EO) into a 2000mL four-neck bottle reaction kettle, heat up to 50-70°C, and after nitrogen replacement, add 10% sodium hydroxide ethanol solution with a content of 2% of the raw material mass as Catalyst, remove the ethanol solvent brought by the catalyst in a vacuum, add 0.5-0.6mol bisphenol A diglycidyl ether dropwise, drop it within 1.5-3.0h, keep the temperature at 150°C and continue the reaction for 3h to obtain a nonionic gemini surfactant Intermediate;

[0059] Lower the temperature of the above product to 30°C, slowly add 2.0mol chlorosulfonic acid sulfonating agent dropwise under rapid stirring, and finish the drop within 1.5-2.5h, continue to control the temperature at 30-50°C for 3-5h, and the product is hydrolyzed with concentrated ammonia water And adjust the pH to neut...

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Abstract

The invention provides an anionic nonionic gemini surfactant, a preparation method and application thereof, and belongs to the technical field of surfactants. The anionic nonionic gemini surfactant provided by the present invention has the following structural formula (1): Formula (1) wherein, Y represents a linking group and is selected from O or N. When Y is O, R 1 , R 2 Represents any one of fatty alcohol polyoxyethylene ether, alkylphenol polyoxyethylene ether, fatty acid amide polyoxyethylene ether; when Y is N, R 1 -Y, R 2 ‑Y represents a kind of fatty acid amide polyetheramine. The anionic nonionic gemini surfactant provided by the invention has good water solubility, excellent surface activity, simple synthesis route, high yield and controllable price, and is suitable for industrial production and high-temperature, high-salinity oil flooding and exploitation.

Description

technical field [0001] The invention belongs to the technical field of surfactants, and in particular relates to an anionic nonionic gemini surfactant and a preparation method and application thereof. Background technique [0002] Anionic and nonionic surfactants have both anionic and nonionic groups in the same molecule, and have the advantages of both anionic and nonionic surfactants, such as temperature resistance, salt resistance, no cloud point, and formation resistance Adsorption, good application performance in reducing interfacial tension, foaming, wetting, emulsification, etc., and has a good synergistic effect with other surfactants, suitable for high temperature, high salinity oil reservoir development. [0003] Gemini surfactants are chemically linked by two ordinary surfactant molecules through linking groups, and have better properties than traditional single-chain surfactants, such as easy to adsorb at the solution interface, easy to form micelles, and have lo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C309/42C07C303/06C07C303/32C07C41/03C07C43/205C09K8/584C09K8/60
CPCC07C309/42C07C303/06C07C303/32C07C41/03C09K8/584C09K8/604C07C43/2055
Inventor 吴庆凯丁锡刚胡朋朋李金平姚勇李慎伟
Owner SHANDONG XINGANG CHEM
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