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Amphoteric lignin-based surfactant and preparation method and application thereof

A surfactant and lignin-based technology, which is used in the preparation of amphoteric lignin-based surfactants, and in the field of amphoteric lignin-based surfactants, can solve the problem of reducing the surface tension of lignin salts, reducing the surface tension of aqueous solutions, and enhancing alkali lignin Solve the problems of water solubility and other problems, and achieve the effect of simple and controllable reaction process route, excellent surface activity and good degreasing effect

Active Publication Date: 2016-06-15
广州市日用化学工业研究所有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The primary purpose of the present invention is to solve the current deficiencies of low water solubility and high surface tension of lignin, and provide an amphoteric lignin-based surfactant, which can effectively reduce the surface tension of aqueous solution, exhibit excellent emulsifying power and remove Oil rate; due to the introduction of lauryl glycidyl ether into the lignin structure, the water solubility of alkali lignin is enhanced and the surface tension of lignin salt is reduced, thus giving lignin-based surfactants excellent oil removal properties

Method used

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  • Amphoteric lignin-based surfactant and preparation method and application thereof
  • Amphoteric lignin-based surfactant and preparation method and application thereof

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Effect test

Embodiment 1

[0042] (1) Dissolve 10g of alkali lignin in 100mL of deionized water, stir to fully dissolve the alkali lignin, and adjust the pH of the system to 10 with 1mol / L sodium hydroxide solution.

[0043] (2) Add lauryl glycidyl ether, the mass ratio of alkali lignin to lauryl glycidyl ether is 5:2, and react at 60°C for 2 hours under the protection of nitrogen to obtain the reaction product;

[0044] (3) The reaction product was distilled under reduced pressure at 60°C to remove the impurities remaining in the reaction. Measure 8g of amphoteric lignin-based surfactant to prepare a 10% aqueous solution, add 6mL of 30% hydrogen peroxide by volume to carry out bleaching treatment, control the treatment temperature at 40°C, and the treatment time is 30min, and obtain the color after vacuum drying at 60°C Pale yellow amphoteric lignin-based surfactant A.

Embodiment 2

[0046] (1) Dissolve 10 g of sodium lignosulfonate in 80 mL of deionized water, stir to fully dissolve the sodium lignosulfonate, and adjust the pH of the system to 11 with 1 mol / L sodium hydroxide solution.

[0047] (2) Add lauryl glycidyl ether, the mass ratio of sodium lignosulfonate to lauryl glycidyl ether is 5:3, and react at 60°C for 3 hours under the protection of nitrogen to obtain the reaction product;

[0048] (3) The reaction product was distilled and dried under reduced pressure at 60°C to remove the remaining impurities in the reaction, and 8g of amphoteric lignin-based surfactant was prepared to make a 10% aqueous solution, and 6mL of hydrogen peroxide with a concentration of 40% by volume was added for bleaching treatment. The temperature in the treatment process was controlled at 60° C., the treatment time was 40 minutes, and the light yellow amphoteric lignin-based surfactant B was obtained after vacuum drying at 60° C.

Embodiment 3

[0050] (1) Dissolve 10g of alkali lignin in 50mL of deionized water, stir to fully dissolve the alkali lignin, and adjust the pH of the system to 12 with 1.5mol / L sodium hydroxide solution.

[0051] (2) Add lauryl glycidyl ether, the mass ratio of alkali lignin to lauryl glycidyl ether is 5:4, and react at 80°C for 4 hours under the protection of nitrogen to obtain the reaction product;

[0052] (3) The reaction product was distilled and dried under reduced pressure at 60°C to remove the remaining impurities in the reaction, and 8g of amphoteric lignin-based surfactant was prepared to make a 10% aqueous solution, and 6mL of hydrogen peroxide with a concentration of 50% by volume was added for bleaching treatment. The temperature in the treatment process was controlled at 55° C., the treatment time was 60 minutes, and the amphoteric lignin-based surfactant C with light yellow color was obtained after vacuum drying at 60° C.

[0053] The amphoteric lignin-based surfactants of Ex...

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Abstract

The invention discloses an amphoteric lignin-based surfactant. Lignin and laurinol glycidyl ether are subjected to reactive synthesis and bleached to obtain the amphoteric lignin-based surfactant. The invention further discloses a preparation method and application of the amphoteric lignin-based surfactant. The amphoteric lignin-based surfactant can effectively lower the surface tension of a water solution, and shows the excellent emulsifying ability and oil removal rate. The surfactant is applied in a low foam water-based metal cleaning agent, has the effects of being low in foam and high in defoaming speed, meanwhile achieves the effect of improving the oil removal rate for metal devices, and has the potential application prospect in the daily chemical washing field.

Description

technical field [0001] The invention relates to surfactants, in particular to an amphoteric lignin-based surfactant, and to a preparation method and application of the amphoteric lignin-based surfactant. Background technique [0002] Biomass-based surfactants, as an alternative to petroleum-based surfactants, have attracted more and more attention from academia and industry. Among them, lignin is the second most abundant natural polymer compound in nature and is a sustainable natural resource. At present, the large-scale transformation of industrial lignin into high value-added products is less than 1%, most of which are discharged as waste, wasting resources and polluting the environment. At the same time, with the increasing depletion and rising prices of oil, coal and other resources, the demand for renewable resources is growing. The raw material of lignin is cheap, non-toxic, and biodegradable, which makes its modification and application research especially attract a...

Claims

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Application Information

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IPC IPC(8): B01F17/42B01F17/50C23G5/06C09K23/42C09K23/50
CPCC23G5/06C09K23/00
Inventor 区菊花赵建红
Owner 广州市日用化学工业研究所有限公司
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