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Method for preparing polyether polyol for wood-like polyurethane employing illegal cooking oil

A technology of polyether polyol and waste oil, which is applied in the field of preparing polyether polyol for wood-like polyurethane by using waste oil, can solve the problems of difficulty in popularization and application of soap, complicated composition of waste oil, etc., and achieves good performance, low production cost, Product stabilization effect

Inactive Publication Date: 2015-03-04
JIANGSU ZHONGSHAN CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] 3) Production of soap and other detergents from waste oil: Saponification of fatty acids in waste oil can produce soap and other detergents, but due to the complex composition of waste oil, the soap made is difficult to popularize and apply

Method used

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  • Method for preparing polyether polyol for wood-like polyurethane employing illegal cooking oil

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] 1) Formula: raw material mass ratio: sucrose: water: waste oil: propylene oxide=200:50:450:300.

[0019] 2) Production method: react water, sucrose and gutter oil at a temperature of 90-100°C for 1 hour according to the ratio, and react for 1-5 hours at -0.05-0.08 MPa after vacuum dehydration to obtain the reaction precursor. The first stage of reaction is completed; Then add catalyst, feed propylene oxide to carry out the second-stage polymerization reaction, the temperature is 120-150 ° C, keep the pressure at 0.3 MPa and continue to feed propylene oxide for reaction, after passing the propylene oxide, keep warm at 130-160 ° C to react until the pressure After reaching below -0.05MPa, continue to react for 1 hour, and finally remove water and small molecules to obtain waste oil polyether polyol.

[0020] The product indexes of the obtained polyether polyol: hydroxyl value 398.47, viscosity 4148, water content 0.04.

Embodiment 2

[0022] 1) Formula: raw material mass ratio: sucrose: gutter oil: glycerol: propylene oxide = 200:400:100:300.

[0023] 2) Production method: react glycerol, sucrose and gutter oil at a temperature of 90-100°C for 1 hour according to the ratio, and react for 1-5 hours at -0.05-0.08MPa after vacuum dehydration to obtain the reaction precursor. The first stage of reaction is completed ; Then add the catalyst, pass through propylene oxide to carry out the second stage of polymerization reaction, the temperature is 120-150°C, keep the pressure at 0.3MPa and continue to pass through propylene oxide for reaction, after passing through the propylene oxide, keep warm at 130-160°C until After the pressure is below -0.05MPa, the reaction is continued for 1 hour, and finally the water and small molecules are removed to obtain the waste oil polyether polyol.

[0024] The product index of the obtained polyether polyol: hydroxyl value 451.35, viscosity 2437, water content 0.07.

Embodiment 3

[0026] 1) Formula: raw material mass ratio: sorbitol: waste oil: glycerol: propylene oxide = 150: 450: 100: 300

[0027] 2) Production method: react sorbitol, glycerol and waste oil at a temperature of 90-100°C for 1 hour according to the ratio, and react at -0.05-0.08MPa for 1-5 hours after vacuum dehydration to obtain the first-stage reaction of the reaction precursor End; then add the catalyst, pass through propylene oxide to carry out the second-stage polymerization reaction, the temperature is 120-150°C, keep the pressure at 0.3MPa and continue to pass through propylene oxide for reaction, after passing through the propylene oxide, keep warm at 130-160°C for reaction Continue to react for 1 hour until the pressure is below -0.05MPa, and finally remove water and small molecules to obtain waste oil polyether polyol.

[0028] The product indexes of the obtained polyether polyol: hydroxyl value 377.13, viscosity 3271, water content 0.09.

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Abstract

The invention discloses a method for preparing polyether polyol for wood-like polyurethane employing illegal cooking oil. The method comprises the following steps: firstly, carrying out pretreatment esterification reaction on illegal cooking oil and an initiator; and carrying out polymerization reaction on a reaction precursor which is obtained by esterification reaction, so as to obtain a polyether polyol product. The polyether polyol of the illegal cooking oil prepared by the method can be applied to production of wood-like polyurethane instead of partial petroleum base polyol; the method has the advantages of simple operation, low production cost, stable product, absence of pollution in the process, energy conservation and environment protection in the overall production and preparation processes; 50-80% of petroleum base polyol is replaced by polyether polyol which is prepared from the illegal cooking oil in production of the wood-like polyurethane; and meanwhile, the synthesized wood-like polyurethane has good properties, and has relatively high adaptability on different processes.

Description

technical field [0001] The invention relates to the field of preparation of polyether polyols for wood-like polyurethanes, in particular to a method for preparing polyether polyols for wood-like polyurethanes using waste oil. Background technique [0002] Polyurethane imitation wood material is a kind of rigid polyurethane running wood plastic with smooth and tough high-density outer skin layer and low-density inner core. It has the characteristics of wood and high rigidity and mechanical strength. Polyether polyols and isocyanates can be used to prepare polyurethanes, which can then be used in many other fields. At present, polyether polyols are mainly prepared from petroleum non-renewable resources and low-molecular alcohols. The production process is complicated and the cost is high, which is far from meeting the actual demand of polyether polyols in the market. [0003] Waste oil is a variety of low-quality oils produced in the process of human life. The recovery of ed...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/28C08G65/26C08L75/08
Inventor 赵华杨佳伟申宝兵陈乐
Owner JIANGSU ZHONGSHAN CHEM