Process for preparing polyether polylol and application of prepared product

A technology of polyether polyols and polyols, which is applied in the field of preparation of organic polymer compounds, can solve the problems of consuming large olefin oxides and high production costs, and achieve a reduction in consumption ratio, good dimensional stability, and good degradability Effect

Inactive Publication Date: 2008-05-07
JURONG NINGWU CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this preparation method is that the preparation cost is high, and a large amount of oxidized olefins needs to be consumed, and oxidized olefins a

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0018] With palm oil 20%, sucrose 50%, diethylene glycol 20%, glycerol 10% as co-initiator, catalyst potassium hydroxide is 0.24% of co-initiator total amount, add in the reactor together, heat up When the temperature reaches 95°C, start to add propylene oxide. The amount of propylene oxide added is 1 times the total weight of the co-initiator. Due to the exothermic reaction, the temperature should not exceed 135°C, and the pressure should be controlled below 0.5MPa. After adding propylene oxide, keep the reaction temperature for 2 hours to fully proceed the reaction, then degas for 20 minutes, and obtain palm oil-sucrose polyoxypropylene ether after refining. The consumption of propylene oxide in the method is about 10% lower than the conventional method for producing similar sucrose polyoxypropylene ethers.

example 2

[0020] With palm oil 30%, sorbitol 40%, propylene glycol 20%, ethylenediamine 10% as co-initiator, dimethylamine (40% aqueous solution) as catalyst, the amount of catalyst is 5% of co-initiator total amount , put it into the reactor, heat up, and start adding propylene oxide when the temperature reaches 100°C. The amount of propylene oxide added is 3 times the total weight of the co-initiator. Due to the exothermic reaction, the temperature should not exceed 155°C, and the pressure should be controlled at 0.5 Below MPa. After the addition of propylene oxide, keep the reaction temperature for 1.5 hours to fully carry out the reaction, and then degas for 3 hours to obtain palm oil-sorbitol polyoxypropylene ether. The consumption of propylene oxide in the method is about 10% lower than the conventional method for producing similar sorbitol polyoxypropylene ethers.

example 3

[0022] 40% of palm oil, 40% of sucrose, 10% of pentaerythritol, 10% of triethanolamine are used as a co-initiator, and sodium hydroxide is used as a catalyst. The amount of the catalyst is 10% of the total amount of the co-initiator. Propylene oxide, the amount of propylene oxide added is 0.5 times the total weight of the co-initiator, the pressure in the heating process is controlled below 0.5 MPa, and when the temperature reaches 110 ° C, propylene oxide that is 3 times the total weight of the co-initiator is started. Exothermic, the control temperature shall not exceed 135°C, and the pressure shall be controlled below 0.6MPa. After adding propylene oxide, keep the reaction temperature for 2 hours to fully proceed the reaction, then degas for 20 minutes, and obtain palm oil-sucrose polyoxypropylene ether after refining. The consumption of propylene oxide in the method is about 23% lower than the conventional method for producing similar sucrose polyoxypropylene ethers.

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Abstract

The invention provides a preparation method of polyether polyol and the application of the obtained product. The method is prepared by reacting a co-initiator and an oxyalkylene under the action of a basic catalyst. Put palm oil or the mixture of palm oil and soybean oil and polyol or amine compound or the mixture of both into the reactor as a co-initiator, add catalyst and oxidized olefin to the above reactor, and co-initiate in the presence of the catalyst The initiator reacts with oxyalkylene at a certain temperature and pressure to prepare polyether polyol. The raw materials of the method for preparing polyether polyol in the invention are cheap and easy to obtain, the product quality is stable, the use performance is good, and the polyurethane foam plastic prepared by the method has good degradability.

Description

technical field [0001] The invention relates to a method for preparing organic polymer compounds, in particular to a method for preparing polyhydroxy polyethers by using oxyolefins, polyol compounds or amine compounds as raw materials, specifically a polyether polyether compound for polyurethane. The preparation method of alcohol and the application of the obtained product. Background technique [0002] Polyether polyol is an important raw material of polyurethane materials. Its preparation method is mostly under the action of certain pressure, temperature and catalyst, from ethylene glycol, propylene glycol, diethylene glycol, glycerol, ethylenediamine, triethanolamine, three Isopropanolamine, toluenediamine, etc., and polyols (such as sucrose, sorbitol, etc.) are used as initiators, and they are prepared by reacting with oxyalkylenes. The disadvantage of this preparation method is that the preparation cost is high, and a large amount of oxidized olefins needs to be consum...

Claims

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Application Information

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IPC IPC(8): C08G65/26C08G18/48
CPCC08G65/26C08G18/4891C08G65/2696C08G65/2615C08G2101/00
Inventor 应军翟洪金应珏来桂琴
Owner JURONG NINGWU CHEM
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