Preparation method for isomeric alcohol polyoxypropylene polyoxyethylene ether

A technology of propylene polyoxyethylene ether and isomerized alcohol, which is applied in the preparation of ether, the preparation of ether from alkylene oxide, organic chemistry, etc., can solve the problems of easy freezing, increase the cost of online production and processing of factories, and high foam, and achieve excellent emulsification. , excellent penetration and wetting properties, fast drying effect

Inactive Publication Date: 2013-11-13
NINGBO LIANKAI CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because isomeric alcohol polyoxyethylene ether has the characteristics of high foam and easy to freeze in winter, it limits its use in some industries that require low foam (such as low-foam laundry detergent, spray cleaning agent, spray degreaser, high-pressure water rinse additive) etc.), at the same time, this series of products is easy to freeze in winter, which is not convenient for on-site construction in the factory, and increases the cost of online production and processing in the factory at low temperature

Method used

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  • Preparation method for isomeric alcohol polyoxypropylene polyoxyethylene ether
  • Preparation method for isomeric alcohol polyoxypropylene polyoxyethylene ether
  • Preparation method for isomeric alcohol polyoxypropylene polyoxyethylene ether

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preparation example Construction

[0019] A preparation method of isomeric alcohol polyoxypropylene polyoxyethylene ether, comprising the following steps: (1) using isomeric alcohol as an initiator, using an alkaline earth metal compound as a catalyst, adding propylene oxide to carry out condensation reaction:

[0020]

[0021] In the reaction equation, m=6, 7, 9; a=1~3, b=3~9.

[0022] (2) Then add ethylene oxide and carry out condensation reaction, prepare isomery alcohol polyoxypropylene polyoxyethylene ether:

[0023]

[0024] In the reaction equation, m=6, 7, 9; a=1~3, b=3~9.

[0025] Preferably, the isomeric alcohol is any one of isomeric decanol, isomeric undecyl alcohol and isomeric tridecanol.

[0026] Preferably, the alkaline earth compound catalyst is one or more mixtures of calcium hydroxide, barium hydroxide and magnesium hydroxide.

[0027] Preferably, the added mass of the alkaline earth compound catalyst is 0.1-1.0% of the total mass of isomeric alcohol, propylene oxide and ethylene oxid...

Embodiment 1

[0035] Embodiment 1 Preparation of isomerized undecyl alcohol polyoxypropylene polyoxyethylene ether

[0036] Add 1.0 mol (172 g) of isomeric undecyl alcohol and 2.1 g of barium hydroxide catalyst in the pressure reactor, and connect the propylene oxide metering tank to the pressure reactor. Replace the air in the kettle with nitrogen for 3 times. After the temperature of the kettle rises to 145-150° C., 2 mol (116 g) of propylene oxide is passed through for 1.5 hours, and the reaction is continued for 1.5 hours. After the kettle temperature dropped to 100-105°C, 3 mol (132 g) of ethylene oxide was passed through for 0.5 hour, and the reaction was continued for 0.5 hour. After the reaction was completed, it was cooled and the pressure was released to obtain a colorless transparent liquid.

Embodiment 2

[0037] Embodiment 2 Preparation of isomerized tridecyl alcohol polyoxypropylene polyoxyethylene ether

[0038] Add 0.5 mol (100 g) of isomeric tridecanol and 3.19 g of calcium hydroxide catalyst in the pressure reactor, and connect the propylene oxide metering tank to the pressure tank. Replace the air in the kettle with nitrogen for 3 times. After the temperature of the kettle rises to 80-85° C., 1.5 mol (87 g) of propylene oxide is passed through for 2.5 hours, and the reaction is continued for 2.5 hours. After the kettle temperature rose to 140-145°C, 3 mol (132 g) of ethylene oxide was passed through for 2.5 hours, and the reaction was continued for 0.5 hours. After the reaction was completed, it was cooled and the pressure was released to obtain a colorless transparent liquid.

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Abstract

The invention discloses a preparation method for isomeric alcohol polyoxypropylene polyoxyethylene ether. The preparation method comprises the following steps: (1) with isomeric alcohol as a starting agent and an alkaline earth metal compound as a catalyst, adding epoxypropane and carrying out a condensation reaction; and (2) then adding oxirane and carrying out a condensation reaction so as to prepare the isomeric alcohol polyoxypropylene polyoxyethylene ether. Thus, the isomeric alcohol polyoxypropylene polyoxyethylene ether prepared by using the method provided by the invention has the characteristics of low foam, low temperature thin fluidity, strong wetting performance, good permeation performance, etc.

Description

technical field [0001] The invention relates to a preparation method of isomerized alcohol polyoxypropylene polyoxyethylene ether, which belongs to the technical field of synthesis of nonionic surfactants in organic chemistry. Background technique [0002] Isomerized alcohol polyoxyethylene ether not only maintains the excellent performance of alkylphenol polyoxyethylene ether surfactants (NP, OP), but also has the high degradability of fatty alcohol polyoxyethylene ether surfactants (AEO) , is a new type of surfactant product with both excellent performance and high biodegradability. Isomerized alcohol polyoxyethylene ethers are environmentally friendly, highly degradable, excellent emulsifying properties, excellent cleaning properties, stable performance in neutral, acidic and alkaline environments, and have a wide range of applications. Because isomeric alcohol polyoxyethylene ether has the characteristics of high foam and easy to freeze in winter, it limits its use in s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C43/13C07C41/03
Inventor 曾红舟陈雪董威
Owner NINGBO LIANKAI CHEM
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