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Surface activator with double-ether bisbensulfosalt and double molecule

A bisbenzenesulfonate and surfactant technology, applied in the field of anionic sulfonate surfactant and its preparation, can solve the problem that the performance of the surfactant cannot meet the engineering requirements, it is easy to be adsorbed by the clay surface, and it is difficult to achieve ultra-low Surface tension and other problems, to achieve the effect of excellent surface activity, cheap raw materials, and easy operation

Inactive Publication Date: 2006-08-16
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the currently used surfactants still have some disadvantages
For example: the performance of some surfactants cannot meet the engineering requirements, it is difficult to achieve ultra-low surface (and / or interfacial) tension, poor salt resistance, easy to be adsorbed by clay surfaces, etc.

Method used

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  • Surface activator with double-ether bisbensulfosalt and double molecule
  • Surface activator with double-ether bisbensulfosalt and double molecule
  • Surface activator with double-ether bisbensulfosalt and double molecule

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The synthesis of embodiment 1 DEDS-10

[0042] Add 4.5658g (0.02mol) of bisphenol A and 17.6g (containing NaOH0.044mol) of bisphenol A into a 250ml three-necked flask equipped with a stirrer and a thermometer, fully react at 50-70°C for 30min, and then add 60ml of Add 10.1798 g (0.046 mol) of decanyl bromide to water and ethanol, and react in a constant temperature water bath at 70°C for 24 hours. After the reaction was completed, the absolute ethanol was evaporated, the product was washed twice with water, then left to separate the liquids, and the upper layer solid was recrystallized with a mixed solvent of ethyl acetate and acetone to obtain white crystals, which were 2,2-bis(4-deca alkoxyphenyl)-propane. The lower liquid uses AgNO 3 After titration, the yield of 2,2-bis(4-decyloxyphenyl)-propane was 98.5%, and the crystallization melting point was 35.7-36.1°C.

[0043]Take 5.1029g (0.01mol) of 2,2-bis(4-decyloxyphenyl)-propane into a three-necked flask, dissolve ...

Embodiment 2

[0044] The synthesis of embodiment 2 DEDS-12

[0045] Add 4.5658g (0.02mol) of bisphenol A and 17.6g (containing NaOH0.044mol) of bisphenol A into a 250ml three-necked flask equipped with a stirrer and a thermometer, fully react at 50-70°C for 30min, and then add 60ml of Add 11.4678 g (0.046 mol) of dodecyl bromide to water and ethanol, and react in a constant temperature water bath at 60°C for 24 hours. After the reaction was completed, the absolute ethanol was evaporated, the product was washed twice with water, then left to separate the liquids, and the upper layer solid was recrystallized with a mixed solvent of ethyl acetate and acetone to obtain white crystals, which were 2,2-bis(4-deca dialkoxyphenyl)-propane. The lower liquid uses AgNO 3 Titration was carried out, and the yield of 2,2-di(4-dodecyloxyphenyl)-propane was measured to be 89.3%, and the crystallization melting point was 45.7-46.4°C.

[0046] Take 5.6629g (0.01mol) of 2,2-bis(4-dodecyloxyphenyl)-propane i...

Embodiment 3

[0047] The surface activity measurement of embodiment 3 DEDS series surfactants

[0048] Prepare the DEDS-10 aqueous solution of concentration 1.6mmol / L, measure surface tension with JZhy1-180 interfacial tensiometer, then dilute this solution successively, measure surface tension several times every dilution, obtain the relation of DEDS-10 aqueous solution surface tension and concentration ( See figure 1 ). Depend on figure 1 The surface tension (γcmc) at the critical micelle concentration of DEDS-10 can be found to be 34.5mN / m, and its critical micelle concentration is 0.47mmol / L. Compared with ordinary surfactants, its surface activity is greatly improved.

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Abstract

A dual-component surfactant of biether biphenylsulfonate is 2.2-bis (4-alkoxy-3- sodium phenylsulfonate) propane. Its preparing process includes such steps as adding biphenol A and the aqueous solution of NaOH into reactor, reaction at 50-78 deg.C, sequentially adding absolute alcohol and long-chain alkyl bromine into reactor, reacting at 50-78 deg.C for 12-36 hr, evaporating alcohol, washing the resultant, recrystallizing, drying to obtain biether compound, adding it into reactor, using dichloromethane as solvent, dripping chlorosulfonic acid, reaction at 15-35 deg.C for 1-3 hr, neutralizing resultant, salting out, filtering and drying. Its advantages are high surface activity, and high foam stability.

Description

technical field [0001] The invention relates to a novel bis-ether bisbenzene sulfonate gemini surfactant and a preparation method thereof, belonging to an anionic sulfonate surfactant and a preparation method thereof. Background technique [0002] Gemini surfactants are formed by chemically bonding two ordinary single-chain single-head group surfactants at the ionic head group. Compared with traditional surfactants, there are many advantages. The main manifestations are: γcmc and cmc are lower than ordinary surfactants containing the same polar groups; they have good low-temperature solubility and solubilization properties; compounding with ordinary surfactants can produce greater synergistic effects; in solution In very low concentration, the solution can produce apparent viscoelastic behavior. (Zhao Jianxi. A new generation of surfactants: Geminis. Advances in Chemistry, 1999, 11(4): 348-357; Zana.R, Benrraou.M, Rueff.R.Langmuir, 1991(7): 1072-1075; Kern. F, Lequeux.F, ...

Claims

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Application Information

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IPC IPC(8): B01F17/00C09K23/00
Inventor 陆屹胡星琪刘勇唐恒志杨露
Owner SOUTHWEST PETROLEUM UNIV
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