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Trimeric anionic surfactant with long rigid linking group and viscoelastic solution formed by trimeric anionic surfactant

A surfactant and rigid connection technology, applied in the field of viscoelastic solution, trimeric anionic surfactant and viscoelastic solution formed by it, can solve system pollution, reduce application performance, high application cost of surfactant viscoelastic solution To reduce the cost of use and eliminate the effect of chromatographic separation

Active Publication Date: 2016-08-24
SHANDONG DAMING FINE CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such systems usually require high surfactant concentrations, which makes the application of surfactant viscoelastic solutions costly
At the same time, since this type of viscoelastic solution is formed by compounding multiple components, when used in some systems with complex interfaces (such as rock formations or soils), it will produce a chromatographic separation effect, making the mixed solution lose its viscoelasticity and reduce the Its application performance
On the other hand, it will also cause unnecessary pollution to the system, increasing the difficulty of post-processing

Method used

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  • Trimeric anionic surfactant with long rigid linking group and viscoelastic solution formed by trimeric anionic surfactant
  • Trimeric anionic surfactant with long rigid linking group and viscoelastic solution formed by trimeric anionic surfactant
  • Trimeric anionic surfactant with long rigid linking group and viscoelastic solution formed by trimeric anionic surfactant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1: the synthesis of α-bromododecanoic acid methyl ester. Add dodecanoic acid (68.8g, 0.4mol) into a 500mL three-neck flask, melt at 65°C, slowly add thionyl chloride (67.6g, 0.56mol) dropwise under stirring, and raise the temperature to 90°C after the dropwise addition, Add a little elemental iodine as an initiator, slowly add liquid bromine (73.6g, 0.46mol) dried with concentrated sulfuric acid dropwise, stir and reflux for 12 hours, lower the temperature to 65°C, add 60mL of anhydrous methanol dropwise under stirring, and complete the addition Then reflux for 2-4 hours. After cooling, wash with water 3-4 times, then wash the organic layer with 50 mL of saturated sodium sulfite solution until neutral, and finally wash with water 3-4 times. The organic layer was dried overnight by adding anhydrous magnesium sulfate. After filtration, the crude product was distilled under reduced pressure to obtain α-bromododecanoic acid methyl ester. 154~158℃ / 5mmHg.

Embodiment 2

[0020] Embodiment 2: the synthesis of α-bromotetradecanoic acid methyl ester. Add tetradecanoic acid (150g, 0.6568mol) into a 500mL three-necked flask, melt at 65°C, slowly add thionyl chloride (106.6g, 0.821mol) dropwise under stirring, raise the temperature to 90°C after the dropwise addition, add A little iodine as an initiator, slowly add liquid bromine (131.2g, 0.821mol) dried by concentrated sulfuric acid dropwise, stir and reflux for 12 hours, lower the temperature to 65°C, add 120mL of anhydrous methanol dropwise under stirring, after the addition is complete Reflux for 2-4 hours. After cooling, wash with water 3-4 times, then wash the organic layer with 50 mL of saturated sodium sulfite solution until neutral, and finally wash with water 3-4 times. The organic layer was dried overnight by adding anhydrous magnesium sulfate. After filtration, the crude product was distilled under reduced pressure to obtain α-bromotetradecanoic acid methyl ester. 175~180℃ / 5mmHg.

Embodiment 3

[0021] Embodiment 3: the synthesis of α-bromohexadecanoic acid methyl ester. Add hexadecanoic acid (150g, 0.58mol) into a 500mL three-neck flask, melt at 65°C, slowly add thionyl chloride (95.1g, 0.73mol) dropwise under stirring, raise the temperature to 90°C after the dropwise addition, add A little elemental iodine was used as an initiator, and liquid bromine (116.6 g, 0.73 mol) dried with concentrated sulfuric acid was slowly added dropwise, stirred and refluxed for 12 hours, and the temperature was lowered to 65°C, and 80 mL of anhydrous methanol was added dropwise with stirring, and after the addition was completed, Reflux for 2-4 hours. After cooling, wash with water 3-4 times, then wash the organic layer with 50 mL of saturated sodium sulfite solution until neutral, and finally wash with water 3-4 times. The organic layer was dried overnight by adding anhydrous magnesium sulfate. After filtration, the crude product was distilled under reduced pressure to obtain α-brom...

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Abstract

The invention relates to a trimeric anionic surfactant with a long rigid linking group and a viscoelastic solution formed by the trimeric anionic surfactant, wherein the molecular structure of the trimeric anionic surfactant C-TrisPhC<n>Na(n=10,12,14) is show as the accompanying drawing, and R=C<n>H2<n+1>(n=10,12,14); the trimeric anionic surfactant can form the viscoelastic solution under the condition without any additives. When the hydrophobic chain length of the C-TrisPhC<n>Na is greater, the viscoelastic performance of the formed solution is better. When the concentration of the surfactant is only 65mmol L<-1>, the zero shear viscosity of a C-TrisPhC14Na solution can reach 1380Pa s. As a one-class anionic surfactant, the C-TrisPhC<n>Na has good biocompatibility; the formed viscoelastic solution can be applied to formulas of oil field fracturing fluid, dragging drag reducers and daily detergents.

Description

technical field [0001] The invention relates to a class of trimeric anionic surfactants and the viscoelastic solution formed thereof, in particular to a trimeric anionic surfactant containing long rigid linking groups and the viscoelastic solution formed thereof, belonging to the field of surfactant science. Background technique [0002] Surfactant viscoelastic solutions are widely used in people's daily life and industrial production, such as fracturing fluid used in oil recovery, towing drag reducer and daily cleaning agent formula, etc. Common surfactant viscoelastic solution systems can be classified into surfactant / salt systems or mixed surfactant systems. However, such systems usually require high surfactant concentrations, which makes the application of surfactant viscoelastic solutions costly. At the same time, since this type of viscoelastic solution is formed by compounding multiple components, when used in some systems with complex interfaces (such as rock format...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F17/44B01F17/08C07C59/70C07C51/41C09K8/68C09K8/86C11D1/06C09K23/44C09K23/08
CPCC09K8/68C09K8/86C11D1/06C07C51/41C07C51/60C07C51/62C07C59/70C07C67/14C07C67/31C09K2208/30C09K23/00C07C53/42C07C53/50C07C69/63C07C69/736
Inventor 宋冰蕾周萍萍翟兆兰
Owner SHANDONG DAMING FINE CHEM CO LTD
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