Preparation method of nonionic polyurethane surfactant

A surfactant, non-ionic technology, used in chemical instruments and methods, transportation and packaging, dissolution, etc., can solve problems such as poor performance

Inactive Publication Date: 2018-05-18
CHENGDU JINHUI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the problems of multi-step purification and poor performance in the preparation of polyurethane surfactants in the prior art, and provides a method for preparing nonionic polyurethane surfactants. The method prepares nonionic polyurethane surfactants No need for multi-step purification, and the product has excellent performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A preparation method of a nonionic polyurethane surfactant, comprising the following process steps:

[0019] A. Dry the 500ml round-bottom four-necked flask with a stirrer, a feeding tube, a condenser tube and an inert gas port for 1 hour in an oven, take it out and place it in a desiccator for cooling, for subsequent use;

[0020] B, in the four-necked flask, add methyl diisocyanate, start stirring and the temperature of reaction is raised to 75 ℃, add catalyst dibutyltin dilaurate, slowly stir;

[0021] C, drip ethylene glycol monoethyl ether, add polyethylene glycol, chlorinated paraffin, dibutyl phthalate and sodium dodecyl sulfonate emulsifier after the reaction for 1.5h, and continue to react for 2h;

[0022] D. After the reaction is completed, the reaction system is cooled to 25° C., and deionized water is added for stirring to obtain a nonionic polyurethane surfactant.

Embodiment 2

[0024] A preparation method of a nonionic polyurethane surfactant, comprising the following process steps:

[0025] A. Dry the 500ml round-bottom four-necked flask with a stirrer, a feeding tube, a condenser tube and an inert gas port for 2h in an oven, take it out and place it in a desiccator for cooling, for subsequent use;

[0026] B, in the four-necked flask, add methyl diisocyanate, start stirring and the temperature of reaction is raised to 80 ° C, add catalyst dibutyltin dilaurate, and slowly stir;

[0027] C, drip ethylene glycol monoethyl ether, add polyethylene glycol, chlorinated paraffin, dibutyl phthalate and sodium dodecyl sulfonate emulsifier after the reaction for 2h, and continue to react for 4h;

[0028] D. After the reaction is completed, the reaction system is cooled to 30° C., and deionized water is added for stirring to obtain a non-ionic polyurethane surfactant.

Embodiment 3

[0030] A preparation method of a nonionic polyurethane surfactant, comprising the following process steps:

[0031] A. Dry the 500ml round-bottom four-necked flask with a stirrer, a feeding tube, a condenser tube and an inert gas port for 1.5h in an oven, take it out and place it in a desiccator for cooling, for later use;

[0032] B, in the four-necked flask, add methyl diisocyanate, start stirring and the temperature of reaction is raised to 77.5 ° C, add catalyst dibutyltin dilaurate, and slowly stir;

[0033] C, drip ethylene glycol monoethyl ether, add polyethylene glycol, chlorinated paraffin, dibutyl phthalate and sodium dodecyl sulfonate emulsifier after the reaction for 1.75h, and continue to react for 3h;

[0034] D. After the reaction is completed, the reaction system is cooled to 27.5° C., and deionized water is added for stirring to obtain a non-ionic polyurethane surfactant.

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PUM

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Abstract

The invention relates to a preparation method of a nonionic polyurethane surfactant, and belongs to the technical field of surfactants. The preparation method conducts polymerization on methyl diisocyanate, 2-ethoxyethanol, polyethylene glycol and the like according to a polymer molecule design principle through formulation design to obtain the novel water-soluble nonionic block type polyurethanesurfactant. When the method is used for preparing the nonionic polyurethane surfactant, multi-step purification is not needed, and the product has excellent properties.

Description

technical field [0001] The present invention relates to a preparation method of a surfactant, more specifically, the present invention relates to a preparation method of a nonionic polyurethane surfactant, which belongs to the technical field of surfactants. Background technique [0002] Non-ionic surfactants have different structures, but there are not many specific types. There are only two categories: one is alcohol ether and phenol ether type. This kind of product is basically the same as the traditional product of the same type. The key is to connect the two parts with a hydrophobic chain with a linking group first, and then carry out the ethoxylation reaction. At present, alcohol ether and phenol ether products have been supplied as industrial products, which are very good wetting agents. [0003] The State Intellectual Property Office published an invention with publication number CN102702468A on 2012.10.03, titled "A silicon-containing polyurethane surfactant and it...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/76C08G18/66C08G18/48C08G18/32B01F17/52C09K23/52
CPCC08G18/3206C08G18/4833C08G18/6674C08G18/7614C09K23/16
Inventor 张一帆
Owner CHENGDU JINHUI TECH
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