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A kind of preparation method of nonylphenol polyoxyethylene ether capped by propylene oxide

A technology of nonylphenol polyoxyethylene ether and propylene oxide, which is applied in the field of nonionic surfactant synthesis, can solve problems such as inconvenience of on-site operation, and achieve the effects of high production efficiency, simple production process and high end capping rate.

Active Publication Date: 2018-06-08
三江化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At the same time, nonylphenol polyoxyethylene ether is a kind of nonionic surfactant with high foam, which will generate a lot of foam in industrial fields such as industrial cleaning and textile printing and dyeing, which will bring inconvenience to on-site operation

Method used

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  • A kind of preparation method of nonylphenol polyoxyethylene ether capped by propylene oxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Example 1 Preparation of Nonylphenol Polyoxyethylene (7) Ether Propylene Oxide Capped

[0022] Add 1.5mol (330g) of nonylphenol and 4.75g of sodium methoxide catalyst into the pressure reactor, and connect the ethylene oxide metering tank to the pressure reactor. The air in the kettle was replaced with nitrogen for 3 times, and when the temperature of the kettle rose to 180° C., 10.5 mol (462 g) of ethylene oxide was passed through for 2.5 hours, and the reaction was continued for 0.5 hours. Then, slowly lower the temperature to 70°C, add 1.5mol (153g) of propylene carbonate, open the pressure relief valve, and connect the pressure relief valve to a 40% sodium hydroxide aqueous solution absorption tank through a pipeline, and react for 2 hours. After the reaction is completed, cool down, add acetic acid to neutralize, and discharge to obtain nonylphenol polyoxyethylene (7) ether propylene oxide capped.

Embodiment 2

[0023] Example 2 Preparation of Nonylphenol Polyoxyethylene (11) Ether Propylene Oxide Capped

[0024] Add 0.75mol (165g) of nonylphenol and 4.22g of potassium hydroxide catalyst into the pressure reactor, and connect the ethylene oxide metering tank to the pressure reactor. The air in the kettle was replaced with nitrogen for 3 times, and when the temperature of the kettle rose to 120° C., 8.25 mol (363 g) of ethylene oxide was passed through for 3.5 hours, and the reaction was continued for 0.5 hours. Then, slowly lower the temperature to 60°C, add 0.75mol (76.5g) of propylene carbonate, open the pressure relief valve, and connect the pressure relief valve to a 40% sodium hydroxide aqueous solution absorption tank through a pipeline, and react for 1.5 hours. After the reaction is completed, cool down, add acetic acid to neutralize, and discharge to obtain nonylphenol polyoxyethylene (11) ether propylene oxide capped.

Embodiment 3

[0025] Example 3 Preparation of Nonylphenol Polyoxyethylene (1) Ether Propylene Oxide Capped

[0026] Add 1.0mol (220g) of nonylphenol and 1.06g of sodium hydroxide catalyst into the pressure reactor, and connect the ethylene oxide metering tank to the pressure reactor. The air in the kettle was replaced with nitrogen for 3 times, and when the temperature of the kettle rose to 100° C., 1.0 mol (44 g) of ethylene oxide was passed through for 1.5 hours, and the reaction was continued for 0.5 hours. Then, slowly lower the temperature to 80°C, add 1.0mol (102g) propylene carbonate, open the pressure relief valve, and connect the pressure relief valve to a 40% sodium hydroxide aqueous solution absorption tank through a pipeline, and react for 3 hours. After the reaction is completed, cool down, add acetic acid to neutralize, and discharge to obtain nonylphenol polyoxyethylene (1) ether propylene oxide capped.

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Abstract

The invention discloses a preparation method of a nonylphenol ethoxylate propylene epoxide stop end. The method comprises the following steps of (1) carrying out addition reaction on nonyl phenol as an initiator and ethylene oxide under the action of a basic catalyst to prepare nonylphenol ethoxylate propylene; and (2) cooling the nonylphenol ethoxylate propylene obtained in the step (1), adding propylene carbonate for reaction, and neutralizing by using acetic acid after reaction is completed to prepare the nonylphenol ethoxylate propylene epoxide stop end. By adopting a traditional basic catalyst, the nonylphenol ethoxylate propylene epoxide stop end is simple and available in raw material, low in cost, simple in production technology and high in production efficiency; and the nonylphenol ethoxylate propylene epoxide stop end prepared through the method is low in foam and high in ending ratio.

Description

technical field [0001] The invention belongs to the technical field of nonionic surfactant synthesis, and in particular relates to a preparation method of nonylphenol polyoxyethylene ether capped with propylene oxide. Background technique [0002] Nonylphenol polyoxyethylene ether is a very important nonionic surfactant with excellent decontamination, wetting and emulsifying properties. It has a wide range of applications in industrial fields such as pesticides, pesticides, and emulsion polymerization. [0003] At the same time, nonylphenol polyoxyethylene ether is a kind of nonionic surfactant with high foam, which will generate a lot of foam in industrial fields such as industrial cleaning and textile printing and dyeing, which will bring inconvenience to on-site operation. The nonylphenol polyoxyethylene ether capped by propylene oxide has introduced branched propylene oxide at the end of the nonylphenol polyoxyethylene ether molecule, which reduces the foam of the cappe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G65/332C08G65/28C07C41/16C07C43/23
CPCC07C41/03C07C41/16C08G65/2612C08G65/2648C08G65/3328C07C43/23
Inventor 潘晓宏章洪良张军蔡玉季宝琳
Owner 三江化工有限公司
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