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Hard bubble polyether polyol and preparation method thereof

A technology for polyether polyol and rigid foam is applied in the field of rigid foam polyether polyol and its preparation, which can solve the problems of cumbersome processing procedures, complex production process, difficult time control and the like, and achieves short preparation time, cold and heat resistance coefficient The effect of high and low production cost

Inactive Publication Date: 2013-01-16
SHANDONG BLUSR DONGDA CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, rigid foam polyether polyols for coal mine support are often produced by using a single initiator and potassium hydroxide catalyst. The production process of this method is complicated and takes a long time. , once it is unqualified, it needs to be reprocessed, and the time is difficult to control

Method used

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  • Hard bubble polyether polyol and preparation method thereof
  • Hard bubble polyether polyol and preparation method thereof
  • Hard bubble polyether polyol and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] In a 3L stainless steel reactor, at a temperature of 60-70°C and a pressure of 0.1-0.4MPa, dipropylene glycol and diethylene glycol are fed in a mass ratio of 3:2, totaling 790g, and the reactor is replaced with nitrogen. After the internal oxygen content is less than 100ppm, vacuum pump 25g of triethylenediamine, nitrogen pressurized, 2290g of propylene oxide is fed, the temperature is raised to 60-100°C for reaction, the pressure is not higher than 0.4MPa, and the internal pressure is reacted for 2 hours. The temperature is controlled at 90-120°C, the pressure is 0.05-0.1MPa, and the temperature is lowered to 90°C after the reaction is completed.

Embodiment 2

[0037] In a 3L stainless steel reactor, at a temperature of 60-70°C and a pressure of 0.1-0.4MPa, feed triethylene glycol and dipropylene glycol at a mass ratio of 1:1, totaling 670g; After the internal oxygen content is less than 100ppm, vacuum pump 25g of triethylenediamine; pressurize with nitrogen, feed 1770g of propylene oxide, heat up to 60-100°C for reaction, the pressure is not higher than 0.4MPa, and the internal pressure is reacted for 2 hours, controlled The temperature is 90-120°C, the pressure is 0.05-0.1MPa, after the reaction is completed, the temperature is lowered to 70°C, and samples are taken for testing.

Embodiment 3

[0039] In a 3L stainless steel reactor, at a temperature of 60-70°C and a pressure of 0.1-0.4MPa, a total of 661g of diethylene glycol and triethylene glycol were fed, with a mass ratio of 1:5; After the internal oxygen content is less than 100ppm, vacuum pump 25g of triethylenediamine; pressurize with nitrogen, feed 1760g of propylene oxide, heat up to 60-100°C for reaction, the pressure is not higher than 0.4MPa, and the internal pressure is reacted for 2 hours. The temperature is 90-120°C, the pressure is 0.05-0.1MPa, after the reaction is completed, the temperature is lowered to 60°C, and samples are taken for testing.

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Abstract

The invention belongs to the field of chemical industry and in particular relates to a hard bubble polyether polyol and a preparation method thereof. The hard bubble polyether polyol product provided by the invention is prepared by an initiator and an epoxy compound under the action of a catalyst through polymerization reaction, wherein the initiator is a polyol compound and is a mixture formed by any two selected from ethylene glycol, diethylene glycol, diethanol amine, dipropylene glycol, glycol amine, triethylene glycol, propylene glycol and glycerine at a mass ratio of (1-5):(5-1). The polyether polyol prepared by utilizing the preparation method disclosed by the invention is regular in molecular weight distribution, lower in viscosity and uniform and transparent in appearance, and the production cost is lower. Polyurethane prepolymer produced by adopting the polyether polyol product provided by the invention has good liquidity and is firm when being bonded with a base material, and a formed consolidated body has the characteristics of high strength and good anti-permeability and can be widely applied to stabilization of an engineering foundation, especially a soil conveying section such as a coal mine.

Description

technical field [0001] The invention belongs to the field of chemical industry, and in particular relates to a rigid foam polyether polyol and a preparation method thereof, and is mainly applicable to stabilizing aspects of complex formations such as coal mine support, engineering waterproofing and plugging, and foundation reinforcement. Background technique [0002] In recent years, with the rapid development of the polyurethane industry, major domestic and foreign production enterprises and scientific research institutions have carried out a lot of research and development work on the improvement of the quality and performance of polyether polyol products and the reduction of production costs. In order to make the high-quality and low-cost products of polyurethane materials meet people's expectations, we need a low-viscosity, low-cost rigid polyether polyol. [0003] At present, rigid foam polyether polyols for coal mine support are often produced by using a single initiat...

Claims

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Application Information

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IPC IPC(8): C08G65/28C08G18/48
Inventor 董立红
Owner SHANDONG BLUSR DONGDA CHEM
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