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Method for preparing polyether polyol

A technology for polyether polyol and polyol, which is applied in the preparation of ether, preparation of sugar derivatives, preparation of ether from alkylene oxide, etc., can solve the problems of high preparation cost and consumption of large alkylene oxide, and achieves good fluidity and consumption. The effect of reduced proportion and easy availability of raw materials for production

Active Publication Date: 2011-02-16
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

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 are petrochemical products. Under the situation of increasingly tight oil resources, reducing the consumption of such olefins has very important practical significance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0022] A preparation method of polyether polyol, which is prepared by reacting initiator and oxyalkylene under the action of basic catalyst, comprising the steps of:

[0023] 710g of soybean oil, 130g of diethanolamine, 100g of triethanolamine, 50g of glycerin, 18g of pentaerythritol, 5g of water, 5g of KOH; 2 Under protection, the temperature was raised to 110° C. for 45 minutes. Close N 2 , evacuated, heated to 160°C, and kept at 160°C for 4 hours. After cooling, the product vegetable oil polyol is obtained.

[0024] Vegetable oil polyol 20%, sucrose 50%, diethylene glycol 20%, glycerol 10% are as co-initiator, catalyst potassium hydroxide is 0.24% of co-initiator total amount, add in the reactor together, Raise the temperature and start adding propylene oxide when the temperature reaches 95°C. 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...

Embodiment 2

[0026] Another preparation method of polyether polyol is prepared by reacting initiator and oxyalkylene under the action of basic catalyst, comprising the steps of:

[0027] 820g of soybean oil, 100g of diethanolamine, 60g of triethanolamine, 20g of glycerin, 20g of ethylene glycol, 5g of water, and 5g of KOH; 2 Under protection, the temperature was raised to 120° C. for 30 minutes. Close N 2 , evacuated, 5-100mmHg, heated to 180°C, and kept at 180°C for 4 hours. After cooling, the product vegetable oil polyol is obtained.

[0028] With vegetable oil polyol 30%, sorbitol 40%, propylene glycol 20%, ethylenediamine 10% is as co-initiator, and dimethylamine (40% aqueous solution) is as catalyst, and the amount of catalyzer is co-initiator total amount 5% %, put it into the reactor, heat up, and start to add propylene oxide when the temperature reaches 100°C. The amount of propylene oxide added is 3 times the total weight of the co-initiator. Because the reaction is exothermic,...

Embodiment 3

[0030] Another preparation method of polyether polyol is prepared by reacting initiator and oxyalkylene under the action of basic catalyst, comprising the steps of:

[0031] 1150g of rapeseed oil, 445g of diethanolamine, 330g of glycerin, 10g of water, and 6g of sodium hydroxide; feed the above components, blow nitrogen, heat up to 110°C, and react for 90min. Turn off nitrogen, heat up to 160°C, vacuumize, and keep warm at 160°C for 5 hours. After cooling, the product vegetable oil polyol is obtained.

[0032] With vegetable oil polyol 95%, sucrose 5% as co-initiator, dimethylamine (40% aqueous solution) as catalyzer, the amount of catalyzer is that 20% of co-initiator total amount adds in the reactor, heats up, and temperature reaches 100 At ℃, start to add propylene oxide. The amount of propylene oxide added is 0.2 times of the total weight of the co-initiator. Because of the exothermic reaction, the temperature should not exceed 135 ℃, and the pressure should be controlled...

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Abstract

The invention provides a method for preparing polyether polyol which is prepared by the reaction between co-initiators and oxidized olefins under the action of an alkali catalyst. The method comprises the steps of: adding vegetable oil polyol and polyol or an amine compound or the mixture of the two in a reactor as the co-initiators; adding the catalyst and the oxidized olefin in the reactor; and reacting the co-initiators with the oxidized olefins in the presence of the catalyst under certain temperature and pressure to obtain the polyether polyol. The method for preparing the polyether polyol has the advantages of cheap and available raw materials, stable product quality and favorable usability; 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. Alcohol preparation method. 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 consumed, and oxidized olefins are petrochemical products...

Claims

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Application Information

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IPC IPC(8): C08G65/28C07C41/03C08G18/67C07H15/08C07B41/04C07H1/00
Inventor 应珏翟洪金应军
Owner JURONG NINGWU NEW MATERIAL CO LTD BY SHARES
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