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Mixed alcohol polyether with low surface tension and preparation method thereof

A low surface tension, mixed alcohol technology, applied in the field of organic compound synthesis, can solve the problems of low molecular distribution, low surface tension, uneven dispersion, etc., and achieve the effect of increased hydrogen bonding, strong directionality and saturation

Pending Publication Date: 2022-07-05
ZHEJIANG HUANGMA TECH +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the shortcomings of poor fluidity and uneven dispersion of fatty alcohol polyethers, the purpose of this invention is to provide a process for improving performance. The fatty alcohol polyethers produced by this method have low molecular distribution, low surface tension, etc. Excellent modification performance, can be widely used in many fields

Method used

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  • Mixed alcohol polyether with low surface tension and preparation method thereof
  • Mixed alcohol polyether with low surface tension and preparation method thereof
  • Mixed alcohol polyether with low surface tension and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The present embodiment provides a low surface tension mixed alcohol polyether and a preparation method thereof, and the specific steps are as follows:

[0024] 1.27g KOH and 0.63g MgCO in a molar ratio of 3:1 3 After mixing evenly, grind to powder to prepare mixed catalyst;

[0025] 189.3g C18 aliphatic alcohol and 22.2g isobutanol, 1.90g mixed catalyst are put into the 2.5L reaction kettle, and the N in the replacement kettle is replaced. 2 3 times, after dehydration at 100℃-105℃ for 1 hour under vacuum degree ≥0.095℃, the temperature is raised to 115℃, 1334g propylene oxide is slowly added, the dropping speed is uniform, and the reaction temperature is controlled at 115℃-120℃ for reaction, wait for After all the dropwise addition of the propylene oxide is completed, the aging is carried out until the pressure in the kettle is basically unchanged;

[0026] After cooling to 100°C, remove the gas in the kettle to a degree of vacuum ≥ 0.095Mpa; continue to heat up to 14...

Embodiment 2

[0029] The present embodiment provides a low surface tension mixed alcohol polyether and a preparation method thereof, and the specific steps are as follows:

[0030] 1.09g KOH and 0.81g MgCO in a molar ratio of 2:1 3 After mixing evenly, grind to powder to prepare mixed catalyst;

[0031] 189.3g C18 aliphatic alcohol and 22.2g isobutanol, 1.90g mixed catalyst are put into the 2.5L reaction kettle, and the N in the replacement kettle is replaced. 2 3 times, after dehydration at 100℃-105℃ for 1 hour under vacuum degree ≥0.095℃, the temperature is raised to 115℃, 1334g propylene oxide is slowly added, the dropping speed is uniform, and the reaction temperature is controlled at 115℃-120℃ for reaction, wait for After all the dropwise addition of the propylene oxide is completed, the aging is carried out until the pressure in the kettle is basically unchanged;

[0032] After cooling to 100°C, remove the gas in the kettle to a degree of vacuum ≥ 0.095Mpa; continue to heat up to 14...

Embodiment 3

[0035] The present embodiment provides a low surface tension mixed alcohol polyether and a preparation method thereof, and the specific steps are as follows:

[0036] 0.76g KOH and 1.14g MgCO in a molar ratio of 1:1 3 After mixing evenly, grind to powder to prepare mixed catalyst;

[0037] 189.3g C18 aliphatic alcohol and 22.2g isobutanol, 1.90g mixed catalyst are put into the 2.5L reaction kettle, and the N in the replacement kettle is replaced. 2 3 times, after dehydration at 100℃-105℃ for 1 hour under vacuum degree ≥0.095℃, the temperature is raised to 115℃, 1334g propylene oxide is slowly added, the dropping speed is uniform, and the reaction temperature is controlled at 115℃-120℃ for reaction, wait for After all the dropwise addition of the propylene oxide is completed, the aging is carried out until the pressure in the kettle is basically unchanged;

[0038] After cooling to 100°C, remove the gas in the kettle to a degree of vacuum ≥ 0.095Mpa; continue to heat up to 14...

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Abstract

The invention provides mixed alcohol polyether with low surface tension and a preparation method thereof, a long-chain fatty alcohol C18 alcohol and a short-chain alcohol isobutanol are selected as initiators, and propylene oxide and ethylene oxide are subjected to catalytic addition through a mixed catalyst in a certain proportion, so that mixed alcohol polyoxypropylene polyoxyethylene ether with reduced surface tension is obtained. According to the invention, the prepared polyether has high monoether selectivity through the mixed catalyst, the obtained ethoxylated product has high alcohol conversion rate and moderate molecular weight distribution, and the finally obtained alcohol ether has the characteristic of low surface tension, so that the finally obtained alcohol ether has better fluidity, wettability and spreadability, can be better applied to the textile industry, and has wide application prospects. In the manufacturing industry and the washing industry, the product can be particularly applied to the cosmetic industry as a superior product, so that cosmetics have better delicate skin feeling and moistening and moisturizing effects. The application prospect is very wide, and the economic benefit is high.

Description

technical field [0001] The invention belongs to the technical field of organic compound synthesis, in particular to a low surface tension mixed alcohol polyether and a preparation method thereof. [0002] technical background [0003] Surfactant is a new type of chemical that has emerged with the rapid development of the petrochemical industry since the 1950s. It is an important product of fine chemicals and enjoys the reputation of "industrial monosodium glutamate". It can change the properties of the surface of the liquid, the liquid-liquid interface and the liquid-solid interface. Adding surfactants to the solvent usually loses the surface tension of the solvent to a large extent, thereby changing the surface state of the system. In the process of continuous improvement of social living standards, consumers' demand for various products has also been significantly improved, and all walks of life have begun to develop products with better performance, lower cost and more div...

Claims

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Application Information

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IPC IPC(8): C08G65/28
CPCC08G65/2609C08G65/2648C08G65/2651C08G65/2696C08G65/269
Inventor 许凯金一丰王马济世郏超伟
Owner ZHEJIANG HUANGMA TECH
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