Unlock instant, AI-driven research and patent intelligence for your innovation.

Asymmetric Gemini surface activator, its production and use

A surfactant and asymmetric technology, applied in chemical instruments and methods, transportation and packaging, dissolution, etc., can solve problems such as high production cost, difficult synthesis of asymmetric Gemini surfactants, and obstacles to popularization and application of Gemini surfactants

Inactive Publication Date: 2007-11-21
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
View PDF0 Cites 49 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, Gemini surfactants, especially asymmetric Gemini surfactants, are difficult to synthesize and have high production costs, which seriously hinder the popularization and application of Gemini surfactants.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Asymmetric Gemini surface activator, its production and use
  • Asymmetric Gemini surface activator, its production and use
  • Asymmetric Gemini surface activator, its production and use

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067]The first step: get α-bromotetradecanoic acid ethyl ester, p-tert-butylphenol and potassium carbonate in a three-necked flask, the mol ratio of α-bromotetradecanoic acid ethyl ester: p-tert-butylphenol: potassium carbonate 1.1:1:1.5; dissolve the above mixture in a mixed solvent of N,N'-dimethylformamide:toluene with a volume ratio of 3:1, heat up to boiling under stirring, reflux to separate water, and wait for no water to come out Then stop heating, filter the reaction solution after cooling, transfer the filtrate to a separatory funnel, add water to separate the liquid, and dry the separated organic phase with anhydrous magnesium sulfate. After filtering, evaporate the organic solvent and carry out vacuum distillation to obtain α- Ethyl (p-tert-butyl)phenoxytetradecanoate.

[0068] The second step: take α-(p-tert-butyl)phenoxytetradecanoic acid ethyl ester in a three-necked flask filled with 1,2-dichloroethane, and add chlorosulfonic acid dropwise to the three-necked ...

Embodiment 2

[0070] The first step: get α-bromotetradecanoic acid ethyl ester, phenol and salt of wormwood in the reactor, the mol ratio of α-bromoteristate ethyl ester: phenol: potassium carbonate is 1.1: 1: 1.5; Dissolve the mixture in a mixed solvent of N,N'-dimethylformamide:benzene with a volume ratio of 3:1, heat up to boiling with stirring, reflux to separate water, stop heating after no water is separated, and filter the reaction solution after cooling , the filtrate was transferred to a separatory funnel, water was added for liquid separation, the separated organic phase was dried with anhydrous calcium chloride, the organic solvent was evaporated after filtration, and the vacuum distillation was carried out to obtain ethyl α-phenoxytetradecanoate .

[0071] The second step: take α-phenoxytetradecanoic acid ethyl ester in a three-necked flask filled with 1,2-dichloroethane, add chlorosulfonic acid dropwise to the three-necked flask under stirring, α-phenoxy The ethyl carboxylate:...

Embodiment 3

[0073] The first step: get α-bromotetradecanoic acid ethyl ester, p-tert-butylphenol and potassium carbonate in a three-necked flask, the mol ratio of α-bromotetradecanoic acid ethyl ester: p-tert-butylphenol: potassium carbonate 1.1:1:1.5; dissolve the above mixture in a mixed solvent of N,N'-dimethylformamide:toluene with a volume ratio of 3:1, heat up to boiling under stirring, reflux to separate water, and wait for no water to come out Then stop heating, filter the reaction solution after cooling, transfer the filtrate to a separatory funnel, add water to separate the liquid, and dry the separated organic phase with anhydrous magnesium sulfate. After filtering, evaporate the organic solvent and carry out vacuum distillation to obtain α- Ethyl (p-tert-butyl)phenoxytetradecanoate.

[0074] The second step: take α-(p-tert-butyl)phenoxytetradecanoic acid ethyl ester and dissolve it in ethanol, add an aqueous solution of sodium hydroxide to it, and use α-(p-tert-butyl)phenoxyte...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Salinityaaaaaaaaaa
Login to View More

Abstract

The invention is concerned with Gemini surfactant field. It relates to a kind of unbalance Gemini surfactant, in the chemistry structure, the m is 6 to 30, n is 0 to 30, and X is one or the mixture of some of H, CH3,C2H5,C3H7,Li+,Na+,K+ and NH4+, Y is one or the mixture of some of Li+, Na+,K+ and NH4+, and the m is 10 to 15, n is 0 to 15. It also relates to the produce and application of this surfactant. It has two different hydrophilic groups, one is sulfonate and the other is carboxylates or carboxylate. And the connecting group is phenoxy. This surfactant has all characters of Gemini surfactant, and the two hydrophilic groups have good water-solubility, water hardness stability, alkaline endurable and foam character for the industry, such as washing, weave and thrice oil extraction.

Description

technical field [0001] The invention belongs to the field of Gemini surfactants, in particular to an asymmetric Gemini surfactant. Background technique [0002] Gemini surfactant is two traditional surfactant molecules, which are chemically bonded into a new type of surfactant through a special linking group, that is, a molecular structure contains two hydrophilic groups and two lipophilic chains . From the molecular structure of the Gemini surfactant, it can be known that the surfactant not only enhances the hydrophobic effect of the hydrocarbon chain, but also adjusts the distance of the hydrophilic group through the linking group, changing the geometry of the unit molecule, making the surface of the micelle Changes in charge density, degree of hydration, and micelle shape give it certain properties. Compared with traditional surfactants, Gemini surfactants have the following characteristics: [0003] (1) The two ionic head groups of the Gemini surfactant are connected ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B01F17/00C09K23/00
Inventor 俞稼镛赵濉严峰宫清涛
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI