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Preparation of Alkylphenol Polyoxyethylene Ether Phosphate Formaldehyde Polycondensation Surfactant

A technology of alkylphenol polyoxyethylene ether and surfactant, which is applied in the field of alkylphenol polyoxyethylene ether phosphate, can solve the problems of complex reaction process of dispersant, low utilization rate of raw materials, large investment in equipment, etc., and achieves Good dispersion effect, promotion of homogeneous phase formation, high reactivity effect

Inactive Publication Date: 2017-04-12
SHANGHAI SHIDA POLYMER MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These methods have shortcomings such as wastewater treatment, product purification, long reaction time, low yield and maximum benefit.
CN200810152433.3 proposes a method for obtaining nonylphenol phenolic trimer by hydroxymethylation and dehydration condensation reaction of nonylphenol and formaldehyde in a fixed ratio of substance, but this method requires three steps for preparation, long reaction time and complicated process. Disadvantages such as large equipment investment and low yield
[0005] The application of polyalkylphenol polyoxyethylene ether surfactants in the prior art is more and more extensive, but the synthetic technology of this kind of dispersant also has complex reaction process, long reaction time, low yield, environmental pollution, raw material Insurmountable technical problems such as low utilization rate

Method used

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  • Preparation of Alkylphenol Polyoxyethylene Ether Phosphate Formaldehyde Polycondensation Surfactant
  • Preparation of Alkylphenol Polyoxyethylene Ether Phosphate Formaldehyde Polycondensation Surfactant
  • Preparation of Alkylphenol Polyoxyethylene Ether Phosphate Formaldehyde Polycondensation Surfactant

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Experimental program
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Effect test

Embodiment 1

[0059] 1) Synthesis of p-nonylphenol polyoxyethylene ether dimerization and trimerization surfactant (n=1, m=4)

[0060] 4-p-Cresol and the solid sodium hydroxide whose mass percentage is 3% calculated from the monomer were added to the autoclave, evacuated to 0.05Mpa, and after repeated replacement with nitrogen gas for 3 times, according to the addition of the EO group. The number of moles m=4 was introduced, 4 mol of ethylene oxide was heated to 100 ° C under stirring, the pressure was maintained at 1 Mpa, the reaction was performed for 1 h, the reaction was stopped and cooled to room temperature, and the product was taken out from the autoclave to obtain nonyl Phenolic polyoxyethylene ether surfactant, yield 98%.

[0061] The molar ratio of p-nonylphenol polyoxyethylene ether and formaldehyde is the ratio of p-methylphenol polyoxyethylene ether:formaldehyde=2:1 into the reactor with nitrogen protection device, start stirring, add monomer to calculate Sulfuric acid with a ...

Embodiment 37

[0079] The critical micelle concentration of surfactant solution was determined by surface tension method. Comparison of critical micelle concentration (CMC) values ​​of polysurfactant (NP2-9) and nonylphenol polyoxyethylene ether monomolecular surfactant (NP-9)

[0080] Sample cmc(mmol / L) γcmc (mN / m) NP-9 0.68 30.3 NP2-9 0.075 29.8 NP3-9 0.053 28.7

[0081] It can be seen from the above table that the CMC value of NP3-9 and NP2-9 is one order of magnitude lower than that of NP-9, and the CMC value of NP3-9 is also 20% smaller than that of NP2-9, and the surface properties are significantly improved.

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Abstract

The invention relates to a formaldehyde condensation polymer surfactant and its preparation method and application. It is a polyalkylphenol polyoxyethylene ether surfactant. The alkylphenol polyoxyethylene ether is used as a monomer, and the monomer is passed through a coupling. Get it. The surfactant prepared by this method has the following structural formula, where EO is an oxyethylene group (‑CH2CH2O‑), and the number of moles added m is 4, 5, 6, 7, 8, 9; n is 1, 9, 10; the preparation steps are as follows: the first step, the synthesis of alkylphenol polyoxyethylene ether; the second step, the synthesis of polyalkylphenol polyoxyethylene ether formaldehyde condensation polymer; the third step, polyalkylphenol polyoxyethylene Synthesis of ether phosphate formaldehyde condensation polymers. By measuring the critical micelle concentration (CMC), it was found that the CMC values ​​of dimers and trimers were two orders of magnitude lower than those of monomers, and the performance of surfactants was significantly improved. The application of surfactants in pesticide stability, papermaking, nanocomposite modification, protein separation and inorganic particle dispersion has found that the two and three polymers have excellent effects and high practical value.

Description

technical field [0001] The invention belongs to the technical field of surfactants. The invention relates to pesticides, papermaking and inorganic particles, specifically a method for synthesizing alkylphenol polyoxyethylene ether phosphate di- and trimeric surfactants. Background technique [0002] Gemini surfactants refer to compounds that contain two hydrophilic groups and two hydrophobic groups in the molecule, and are bound together by linking groups through chemical bonds at or near the hydrophilic groups. In the gemini surfactant molecule, the amphiphilic water groups are connected by chemical bonds, so that the two surfactant units are closely combined. On the one hand, this structure increases the hydrophobic effect of the hydrocarbon chain; on the other hand, the chemical bond limits the separation tendency between the polar groups due to the repulsion, making it arranged neatly and increasing the surface activity. Compared with similar surfactants with monooleop...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G65/338C08G65/327C08G65/331C08G65/28B01F17/42C09K23/42
Inventor 任天瑞黄海龙张雷李跃超刘如军
Owner SHANGHAI SHIDA POLYMER MATERIAL
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