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Method for cooperatively reducing odor of polyether glycol through catalyst and photo-catalytic oxidation

A polyether polyol, photocatalytic oxidation technology, applied in the field of polymer compound preparation, can solve problems such as polyether polyol odor, achieve good performance, good effect, and reduce the effect of product color and odor

Inactive Publication Date: 2017-12-26
JURONG NINGWU NEW MATERIAL CO LTD BY SHARES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is technically innovative in terms of synthesis reaction and product post-treatment, and strives to solve the main problem of polyether polyols producing odor

Method used

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  • Method for cooperatively reducing odor of polyether glycol through catalyst and photo-catalytic oxidation

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Comparison scheme
Effect test

Embodiment 1

[0013] A method for synergistically reducing the odor of polyether polyols through binary composite catalysts and photocatalytic oxidation:

[0014] Using ethylenediamine as the starting agent, using a specific binary composite catalyst: potassium ethoxide and zinc glutarate, the mass ratio is 1:1, and the reaction temperature is controlled at 90 o C synthesis polyether polyol. At the same time, in the post-processing process of the product, a titanium dioxide photocatalyst is used to catalyze the oxidation of aldehydes, the amount of the catalyst is 1% of the polyether polyol, and the reaction temperature is controlled at 50 o c.

[0015] Attached Table 1 Comparison of the content of aldehydes in the polyether synthesized by the traditional method and the polyether in this example

[0016]

Embodiment 2

[0018] A method for synergistically reducing the odor of polyether polyols through binary composite catalysts and photocatalytic oxidation:

[0019] Using ethylenediamine as the starting agent, using a specific binary composite catalyst: potassium ethylate and zinc glutarate, the mass ratio is 2:1, and the reaction temperature is controlled at 110 o C synthesis polyether polyol. At the same time, in the post-processing process of the product, a titanium dioxide photocatalyst is used to catalyze the oxidation of aldehydes, the amount of the catalyst is 3% of the polyether polyol, and the reaction temperature is controlled at 70 o c. .

[0020] Attached Table 2 Comparison of the content of aldehydes in the polyether synthesized by the traditional method and the polyether in this example

[0021] .

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Abstract

The invention discloses a method for cooperatively reducing odor of polyether glycol through a catalyst and photo-catalytic oxidation. According to the method disclosed by the invention, firstly, the polyether glycol is synthesized by adopting a specific binary compound catalyst containing potassium ethoxide and zinc glutarate and a chemical reaction speed is improved. Meanwhile, in a post-treatment process of a product, a titanium dioxide photo-catalytic oxidation aldehyde substance is adopted and is used for cooperatively reducing the concentration of low molecular weight aldehyde substances, so that the aim of reducing the odor of the polyether glycol is realized. The polyether glycol prepared by the method is characterized in that the content of low molecular weight aldehydes including free formaldehyde, acetaldehyde and the like is low, the quality of the product is stable and the utilization performance is good.

Description

technical field [0001] The invention belongs to a preparation method of a polymer compound, in particular to a method for synergistically reducing the odor of polyether polyols through a binary composite catalyst and photocatalytic oxidation. Background technique [0002] Polyether polyols are widely used in the automotive industry, such as the manufacture of polyurethane high-resilience cushions, steering wheels, etc. With the increasing awareness of environmental protection, the volatility and high odor of polyurethane products have become important factors that limit their application. On March 1, 2012, the state issued the guidelines for the evaluation of air quality in passenger cars (GB / T27630-2011), which stipulates the content of volatile aldehydes such as formaldehyde and acetaldehyde in the air in cars. From the analysis of synthetic raw materials and process, the odor of polyether polyol products is mainly produced by unreacted propylene oxide monomers and low mo...

Claims

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Application Information

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IPC IPC(8): C08G65/26C08G65/30
CPCC08G65/2624C08G65/2648C08G65/266C08G65/269C08G65/30
Inventor 翟洪金应珏倪小明郑磊于文超王飞任翠环
Owner JURONG NINGWU NEW MATERIAL CO LTD BY SHARES
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