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Method for synthesizing alkylphenol-polyethenoxy ether terpolymer surfactant

A technology of alkylphenol polyoxyethylene ether and surfactant, which is applied in the field of synthesis of alkylphenol polyoxyethylene ether trimerized surfactant, can solve the problems of complicated process, long reaction time and large equipment investment, etc. Achieve the effect of simple process, easy operation and high reactivity

Inactive Publication Date: 2011-06-01
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: provide a kind of synthesis method of alkylphenol polyoxyethylene ether trimerization surfactant, this method uses ionic liquid as catalyst, has overcome the complicated technological process of prior art, equipment investment is big, reaction Defects with long time and low yield

Method used

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  • Method for synthesizing alkylphenol-polyethenoxy ether terpolymer surfactant
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  • Method for synthesizing alkylphenol-polyethenoxy ether terpolymer surfactant

Examples

Experimental program
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Embodiment 1

[0032] Synthesis of Decylphenol Polyoxyethylene Ether Trimeric Surfactant TDP-4 (n=10, m=4)

[0033] Synthesis of the first step intermediate 2-[3-(5-decyl salicyl)-5-decyl salicyl]-4-decylphenol

[0034] Add 4-decylphenol and paraformaldehyde in a molar ratio of 4-decylphenol:paraformaldehyde=3:2 to the reactor equipped with a nitrogen protection device, start stirring, and then add the ionic liquid catalyst [ Bmim][BF 4 ], [Bmim][BF 4] is added in an amount of 0.9% of the sum of 4-decylphenol and paraformaldehyde mass, heating and maintaining the temperature of the material is 105 ° C, after reacting for 1 hour, the reaction mixture is extracted with sherwood oil, and then the obtained The extract of the upper layer is distilled, and petroleum ether is steamed out to obtain a trimeric surfactant intermediate: 2-[3-(5-decyl salicyl)-5-decyl salicyl]-4-decylphenol, The yield is 95%; the petroleum ether raffinate of the lower floor obtained by the extraction is stirred with ...

Embodiment 2～23

[0042] In Examples 2 to 23, except the target product listed in the following table 1 (covering its used reactant raw material), ionic liquid catalyst and its addition amount, ethylene oxide addition mole number (mol) Except for the product yield (%), the synthetic reaction steps and other processing conditions are all the same as in Example 1.

[0043] Different ionic liquid catalysts and their dosages are used in Table 1 Examples 2 to 23

[0044]

[0045] 2

Embodiment 24

[0047] Adopt surface tension method to measure the critical micelle concentration of surfactant solution, table 2 is nonylphenol polyoxyethylene ether trimeric surfactant (TNP) and nonylphenol polyoxyethylene ether monomolecular surfactant (NP) Comparison of critical micelle concentration (CMC) values.

[0048] Table 2 CMC values ​​of TNP and NP (25°C)

[0049] monomolecular surfactant

[0050] It can be seen from the above table that the CMC value of TNP is 1-2 orders of magnitude lower than that of NP, and the surface activity is significantly improved.

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Abstract

The invention discloses a method for synthesizing an alkylphenol-polyethenoxy ether terpolymer surfactant, relating to ether surfactants used as a solubilizing agent, a wetting agent, an emulsifier and a foaming agent; the surfactant prepared with the method has a structural formula as follows, wherein EO is ethyleneoxide group (-CH2CH2O-), the addition mole number m thereof can be 4, 7, 10, 15, 20 or 30, and n can be 8, 9, 10 or 14; the synthesizing method comprises the following steps: firstly, 2-(3-(5-alkyl salicyl)-5-alkyl salicyl)-4-alkyl phenol is synthesized and an ionic liquid catalystis added into the reaction of 4-alkyl phenol and paraformaldehyde; and secondly, the product of alkylphenol-polyethenoxy ether terpolymer surfactant is synthesized. The method has simple technique, adopts the recyclable ionic liquid catalyst, effectively reduces the environmental pollution and has short reaction time and higher yield of product.

Description

technical field [0001] The technical scheme of the present invention relates to the ether substance surfactant that is used as solubilizer, wetting agent, emulsifier and foaming agent, specifically a kind of synthetic method of alkylphenol polyoxyethylene ether trimerization surfactant . Background technique [0002] Three identical or different surfactant monomer molecules are linked together by chemical bonds with linking groups at or near their hydrophilic end groups, which are called trimeric surfactants ( trimericsurfactant), which is a newly developed oligomeric surfactant based on gemini surfactant or Gemini surfactant. There have been similar research reports in domestic and foreign literature. [0003] US3919429 proposed to use hydrochloric acid, sulfuric acid, phosphoric acid and oxalic acid as catalysts, alkylphenol and formaldehyde condensation reaction, and rely on distillation dehydration to remove acid to obtain alkylphenol aldehyde polymer intermediates, an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01F17/42C09K23/42
CPCY02P20/584
Inventor 黎钢杨芳刘荣祁健徐念张松梅
Owner HEBEI UNIV OF TECH
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