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Novel gemini surfactant and preparation method thereof, novel comb-type surfactant and preparation method thereof

A surfactant, a new type of technology, applied in chemical instruments and methods, transportation and packaging, dissolution, etc., can solve the problems of high critical glue concentration, poor salt resistance, low activity, etc., and achieve the effect of improving spreadability

Active Publication Date: 2022-06-28
XINTE ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Gemini surfactants and comb surfactants in the prior art have low activity, excessive critical glue concentration, and poor salt resistance

Method used

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  • Novel gemini surfactant and preparation method thereof, novel comb-type surfactant and preparation method thereof
  • Novel gemini surfactant and preparation method thereof, novel comb-type surfactant and preparation method thereof
  • Novel gemini surfactant and preparation method thereof, novel comb-type surfactant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] The present embodiment provides a preparation method of a novel Gemini surfactant, comprising the following steps:

[0060] 1) Put the raw materials In the presence of an acidic catalyst, a first organic solvent, and water, the hydrolysis reaction is carried out so that R 5 , R 6 and R 4 At least one of them is hydrolyzed into a hydroxyl group to obtain a hydrolyzed product. The temperature of the hydrolysis reaction is 40° C. and the reaction time is 2h.

[0061] During the hydrolysis reaction, the raw material The molar ratio to the catalyst is 1:0.01;

[0062] raw material The molar ratio to water is 1:2;

[0063] raw material The molar ratio to the first organic solvent is 1:1.

[0064] where R 1 for vinyl, R 4 is octanyloxy, R 5 is hexaneoxy, R 6 is decyl, and R 6 for R 3 ; wherein, the acidic catalyst is trifluoroacetic acid; the first organic solvent is dimethylacetamide.

[0065] 2) ring-opening polymerization is carried out with hydrolysate a...

Embodiment 2

[0075] The present embodiment provides a preparation method of a novel Gemini surfactant, comprising the following steps:

[0076] 1) Put the raw materials In the presence of an acidic catalyst, a first organic solvent, and water, the hydrolysis reaction is carried out so that R 5 , R 6 and R 4 At least one of them is hydrolyzed into a hydroxyl group to obtain a hydrolyzed product. The temperature of the hydrolysis reaction is 55 °C and the reaction time is 2.5 h.

[0077] During the hydrolysis reaction, the raw material The molar ratio to the catalyst is 1:0.002;

[0078] raw material The molar ratio to water is 1:1;

[0079] raw material The molar ratio to the first organic solvent is 1:0.3.

[0080] where R 1 for vinyl, R 4 is hexaneoxy, R 5 is decyloxy, R 6 is pentalkoxy; wherein, the acidic catalyst is trifluoromethanesulfonic acid; the first organic solvent is toluene and xylene (mass ratio is 1:1).

[0081] 2) ring-opening polymerization is carried out ...

Embodiment 3

[0089] The present embodiment provides a preparation method of a novel Gemini surfactant, comprising the following steps:

[0090] 1) Put the raw materials In the presence of an acidic catalyst, a first organic solvent, and water, the hydrolysis reaction is carried out so that R 5 , R 6 and R 4 At least one of them is hydrolyzed into a hydroxyl group to obtain a hydrolyzed product. The temperature of the hydrolysis reaction is 50°C and the reaction time is 3h.

[0091] During the hydrolysis reaction, the raw material The molar ratio to the catalyst is 1:0.005;

[0092] raw material The molar ratio to water is 1:3;

[0093] raw material The molar ratio to the first organic solvent is 1:0.6.

[0094] where R 1 for vinyl, R 4 is decyloxy, R 5 is decyl, R 6 is pentyl, when R 5 for C 1 -C 10 the alkyl group, then R 5 for R 2 ; when R 6 for C 1 -C 10 the alkyl group, then R 6 for R 3 ; Wherein, the acidic catalyst is nitric acid; The first organic solvent i...

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Abstract

The invention discloses a novel Gemini surfactant and a preparation method thereof, a novel comb-shaped surfactant and a preparation method thereof. The invention uses vinyl silane as the main body and introduces polyether chain segments into its side groups to obtain a novel Gemini surface active agent. The active agent can increase the surface activity of the solution and reduce the surface tension, so as to improve the spreadability of the solution at the interface of different phases. Further, by controlling the content of each group of polyether, products with different HLB values ​​(hydrophilic-lipophilic balance value) can be synthesized; and through the catalyst, the new Gemini surfactant can be connected Hydrogen-containing silicone oil is added to the side to obtain a new type of comb-shaped surfactant, which has a comb-shaped structure, thereby improving the surface activity of the solution and reducing the surface tension, and improving the spreadability of the solution at different phase interfaces.

Description

technical field [0001] The invention belongs to the technical field of surfactants, and in particular relates to a novel Gemini surfactant and a preparation method thereof, a novel comb-type surfactant and a preparation method thereof. Background technique [0002] As one of the organosilicon compounds, organosilicon surfactants have been used in various industrial fields since the 1960s, but their large-scale, rapid and comprehensive development began in the 1980s. Due to the unique advantages of this type of surfactant, such as low surface tension, good wetting and spreading, strong thermal stability, large emulsifying effect, good compatibility, and foaming, foam stabilization and foam suppression, and no Toxic, no side effects, has been widely used in all walks of life. At present, it is widely used in textiles, cosmetics, plastics, coatings, agricultural chemicals, medicine, machining and other fields. [0003] There are currently two forms of silicon-containing surfa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K23/54C09K23/42C08G65/28C08G81/00
CPCC08G65/2639C08G65/2696C08G81/00C09K23/00C09K23/54
Inventor 王聪陈国辉王三跃蒋鹏余洋刘慧捷谭孟辉
Owner XINTE ENERGY