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Light-color cardanol polyoxyethylene ether ammonium sulfate anionic surfactant as well as preparation method and application thereof

A technology of cardanol polyoxyethylene ether and surfactant, which is applied in the field of light-colored cardanol polyoxyethylene ether ammonium sulfate anionic surfactant and its preparation, and can solve the problem of poor bleaching effect, darkening of product color, and product color Deep and other problems, to achieve the effect of simple process, small color number and high conversion rate

Pending Publication Date: 2022-04-05
常熟耐素生物材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, under long-term high-temperature reaction conditions of 110-150°C, cardanol polyoxyethylene polyoxyethylene ether / cardanol polyoxypropylene polyoxyethylene ether / cardanol polyoxyethylene polyoxypropylene ether will be oxidized, resulting in a very dark color of the finished product. In the process of replacing ammonia with alkali, the pH of the product is under alkaline conditions, and the color of the product will further darken
Although hydrogen peroxide can be used for bleaching later, the bleaching effect is not good, and once the hydrogen peroxide is completely decomposed, the color of the product will quickly become darker

Method used

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  • Light-color cardanol polyoxyethylene ether ammonium sulfate anionic surfactant as well as preparation method and application thereof
  • Light-color cardanol polyoxyethylene ether ammonium sulfate anionic surfactant as well as preparation method and application thereof
  • Light-color cardanol polyoxyethylene ether ammonium sulfate anionic surfactant as well as preparation method and application thereof

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preparation example Construction

[0025] This embodiment discloses a preparation method of light-colored cardanol polyoxyethylene ether ammonium sulfate anionic surfactant comprising the following steps:

[0026] 1) Mix cardanol polyoxyethylene ether, catalyst and reducing agent, start stirring, then heat up to 80-110°C, and vacuum dehydrate for 20-60 minutes; wherein, the catalyst includes carbonamide or dicyandiamide, the The reducing agent includes hypophosphorous acid or hypophosphite;

[0027] 2), adding sulfamic acid in stages to the reaction solution obtained in step 1), with an interval of 10 minutes each time; wherein, the cardanol polyoxyethylene ether, the catalyst, the reducing agent and the sulfamic acid The molar ratio is 1:(0.2~0.6):(0.05~0.3):(1.0~1.2).

[0028] 3), then heat up to 100-125°C, and keep warm for 3-6 hours;

[0029] 4), after the reaction, lower the temperature to 60-75°C, add alcohol solvent to reduce viscosity, filter to remove insoluble matter, dry the filtered material, vacu...

Embodiment 1

[0037] 1. Add 564g (about 1mol) of cardanol polyoxyethylene ether (6), 18g (about 0.3mol) of carbonamide, and 13.2g (about 0.1mol) of hypophosphorous acid into a four-necked bottle, raise the temperature to 90°C, and vacuum dehydrate 30 minutes;

[0038] 2. Add 107g of sulfamic acid (about 1.1mol) in four times, with an interval of 10 minutes each time. After the addition, gradually raise the temperature to 115°C, and keep it warm for 4 hours;

[0039] 3. Cool down to 70°C, add ethanol, filter to remove insoluble impurities, heat up the filtered material to 75°C, vacuum to remove ethanol, and discharge.

Embodiment 2

[0041] 1. Add 564g (about 1mol) of cardanol polyoxyethylene ether (6), 18g (about 0.3mol) of carbonamide, and 39.6g (about 0.3mol) of hypophosphorous acid into a four-necked bottle, raise the temperature to 95°C, and vacuum dehydrate 30 minutes;

[0042] 2. Add 107g of sulfamic acid (about 1.1mol) in four times, with an interval of 10 minutes between each addition, and gradually raise the temperature to 115°C after the addition, and keep it warm for 3 hours;

[0043] 3. Cool down to 65°C, add ethanol, filter to remove insoluble impurities, heat up the filtered material to 70°C, vacuum to remove ethanol, and discharge.

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Abstract

The invention discloses a preparation method of a light-color anacardol polyoxyethylene ether ammonium sulfate anionic surfactant, which comprises the following steps: 1) mixing anacardol polyoxyethylene ether, a catalyst and a reducing agent, heating to 80-110 DEG C, and dehydrating; (2) adding sulfamic acid into the reaction liquid obtained in the step (1), then heating to 100-125 DEG C, and carrying out heat preservation reaction; and 3) after the reaction is finished, cooling to 60-75 DEG C, simultaneously adding an alcohol solvent to reduce viscosity, filtering to remove insoluble substances, and drying the filtered material to obtain the product. The preparation method comprises the following steps: taking cardanol polyoxyethylene ether and sulfamic acid as raw materials, adding a reducing agent as a color stabilizer, and reacting under the action of a catalyst to obtain light-color cardanol polyoxyethylene ether ammonium sulfate.

Description

technical field [0001] The invention relates to the technical field of surfactants, more specifically, it relates to a light-colored cardanol polyoxyethylene ether ammonium sulfate anionic surfactant and a preparation method and application thereof. Background technique [0002] Alkylphenol polyoxyethylene ether ammonium sulfate was developed by Europe and the United States in the 1980s. It has outstanding advantages such as strong permeability, high detergency, good compatibility, and rapid dissolution. Good foaming ability, high solubilizing ability to inorganic salts, weak irritation to human skin, can be used in personal care, petroleum industry, textile industry, pesticide production, industrial cleaning and other fields. [0003] At present, alkylphenol polyoxyethylene ether ammonium sulfate is mainly reacted with alkylphenol polyoxyethylene ether and sulfamic acid under the condition of urea as a catalyst. Since alkylphenol polyoxyethylene ether ammonium sulfate is s...

Claims

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Application Information

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IPC IPC(8): C07C305/10C07C303/24C11D1/29
CPCY02P20/584
Inventor 顾斌韩松刘玲王震戴志成
Owner 常熟耐素生物材料科技有限公司