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2-hydroxyl radical-3,5-dialkylbenzene sulfonate anionic surface active agent and preparation method and uses thereof

A technology of alkylbenzene sulfonate and surfactant, which is applied in the field of high-efficiency surfactants and can solve problems not mentioned above

Inactive Publication Date: 2008-01-30
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] CN1270574A, CN1317364A, CN1272393A, CN1400276A, CN1413762A, CN1569824A, etc. disclosed the preparation and application of alkylbenzenesulfonate and dialkylbenzenesulfonate, but did not mention 2-hydroxyl-3,5-dialkylbenzene Sulfonate and its preparation method and use

Method used

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  • 2-hydroxyl radical-3,5-dialkylbenzene sulfonate anionic surface active agent and preparation method and uses thereof
  • 2-hydroxyl radical-3,5-dialkylbenzene sulfonate anionic surface active agent and preparation method and uses thereof
  • 2-hydroxyl radical-3,5-dialkylbenzene sulfonate anionic surface active agent and preparation method and uses thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] The first step: add a certain amount of n-octanoic acid into the three-necked flask, raise the temperature to 60°C, add thionyl chloride dropwise under stirring, the molar ratio of n-octanoic acid to thionyl chloride is 1:1.3, and the dropwise addition is completed After heating to boiling and reflux until no gas is released, then distill off excess thionyl chloride under normal pressure and distill under reduced pressure to obtain octanoyl chloride.

[0071] Step 2: Add a certain amount of phenol into the three-necked flask, raise the temperature to 60°C, add the synthesized octanoyl chloride dropwise, the molar ratio of phenol to octanoyl chloride is 1:1.1, continue the reaction until there is no gas Release, stop the reaction, and distill under reduced pressure to obtain n-octanoic acid phenyl.

[0072] The third step: take a certain amount of synthesized phenyl n-octanoate in a three-necked flask, add anhydrous AlCl in batches at room temperature 3 , phenyl n-octan...

Embodiment 2

[0079] The first step: add a certain amount of n-decanoic acid into the three-necked flask, heat up to 70 ° C, add thionyl chloride dropwise under stirring, the molar ratio of n-decanoic acid and thionyl chloride is 1: 1.6, drop After the addition is complete, heat to boiling and reflux until no gas is released, then distill off excess thionyl chloride under normal pressure, and distill under reduced pressure to obtain decanoyl chloride.

[0080] Step 2: Add a certain amount of phenol into the three-necked flask, raise the temperature to 75°C, add the synthesized decanoyl chloride dropwise, the molar ratio of phenol to decanoyl chloride is 1:1.3, continue the reaction until there is no gas Release, stop the reaction, and distill under reduced pressure to obtain phenyl decanoate.

[0081] The third step: take a certain amount of synthesized phenyl decanoate in a three-necked flask, and add anhydrous AlCl in batches at room temperature3 , n-decanoic acid phenyl ester with anhydr...

Embodiment 3

[0089] Add NaCl to the 2# product 2-hydroxyl-3-decyl-5-octylbenzenesulfonate sodium obtained in Example 1, the concentration of NaCl in the system is 0~1wt%, 2-hydroxyl-3-decyl -The concentration of sodium 5-octylbenzenesulfonate is 7×10 -4 mol / L, and the steady-state interfacial tension curve of simulated oil n-undecane as a function of NaCl concentration is shown in Figure 10.

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Abstract

The invention pertains to high effective surfactant field, more particularly relates to 2-hydroxy- 3, 5-bialky benzene sulfonate anion surfactant and the preparation method and use thereof. The ortho-position of sulfo group, the hydrophilic group of the anion surfactant, is a hydroxyl, and the ortho-position and para-position of the hydroxyl are respectively provided with an alkyl with 4 to 20 carbon numbers; the critical micelle concentration of the surfactant is 10-7 to 10-5 mol / L; the surface tension under the concentration is 30 to 25mN / m; if an electrolyte is added, the surface tension can be increased, and the interfacial tension of the model oil can also be increased, the higher the electrolyte is, the larger the tension is. The surfactant with longer hydrophobic chain has low bubbling ability, and little bubble can be produced when the surfactant concentration is between 10-8 - 10-2 mol / L, which shows extraordinary characteristics of alky benzene sulfonate anion surfactant. The chemical structure of the surfactant of the invention is shown as the figure.

Description

technical field [0001] The invention belongs to the field of high-efficiency surfactants, and in particular relates to 2-hydroxy-3,5-dialkylbenzenesulfonate anionic surfactants, a preparation method and application thereof. Background technique [0002] Sulfonate is the most widely used anionic surfactant in heavy oil emulsification, triple recovery and foam flooding formulations. Among them, alkylbenzene sulfonate surfactant is one of the main products of surfactant industrialization for tertiary oil recovery. Alkylbenzene sulfonate products are relatively stable in quality, good in performance, excellent in water solubility, acid and alkali resistance. It can be used alone or in combination with anionic surfactants, cationic surfactants, nonionic surfactants, amphoteric surfactants and other additives or their mixtures, and can be used in the formulation of detergents and other daily chemicals, and can also be used in pesticides , metal cleaning processing, ore flotation...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C309/31C07C303/32B01F17/12C09K8/584C09K23/12
Inventor 俞稼镛赵濉黄玉萍严峰张路安静仪
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI