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Sucrose polyether polyol and preparation method thereof

A technology for polyether polyol and sucrose, which is applied in the field of polyether polyol synthesis, can solve the problems of low conversion rate of olefin oxide, endanger human health, consume human and financial resources, etc. Effect

Active Publication Date: 2019-07-12
SHANDONG INOV NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the production process of rigid polyether polyols, the quality of the product is directly affected by problems such as incomplete sucrose reaction and high monomer residues; at the same time, the use of crystal sucrose to produce polyether requires the establishment of sugar warehouses, sugar melting, and filtration , transformation and other equipment consume a lot of manpower and financial resources; the conversion rate of oxidized olefins in the reaction is low, the reaction is insufficient, and it is harmful to human health; the above problems have always restricted the production of sucrose polyether polyols

Method used

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  • Sucrose polyether polyol and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Add 488.6g of syrup with a sucrose mass concentration of 70%, and 9.42g of N,N-dimethyloctadecylamine into a 2.5L polymerization reactor, and then check the stamping of the polymerization reactor to ensure good sealing, and perform nitrogen replacement 5 times, then evacuate to the minimum vacuum degree of -0.093MPa, set the temperature to 85°C and raise the temperature, when it reaches 80°C, start to add propylene oxide dropwise, keep the temperature between 80-85°C, until the added epoxy When the amount of propane is 330g, stop feeding propylene oxide, and start aging at a temperature of 80-105°C for 2-3 hours. With the progress of the aging reaction, the pressure of the reactor first drops and then remains stable, and then pumps in 6.28g N, N-di Methyl octadecylamine and 114.2g of diethylene glycol prepared solution, keep the reaction temperature at 105-110°C, under the reaction pressure of 0.1-0.4MPa, continue to drop the remaining 1165g of propylene oxide, react for...

Embodiment 2

[0028] Add 488.6g of syrup with a sucrose mass concentration of 70%, and 9.42g of N,N-dimethyloctadecylamine into a 2.5L polymerization reactor, and then check the stamping of the polymerization reactor to ensure good sealing, and perform nitrogen replacement 5 times, then evacuate to the minimum vacuum degree of -0.093MPa, set the temperature to 85°C and raise the temperature, when it reaches 80°C, start to add propylene oxide dropwise, keep the temperature between 80-85°C, until the added epoxy When the amount of propane is 430g, stop feeding propylene oxide, and start aging at a temperature of 80-105°C for 2-3 hours. With the progress of the aging reaction, the pressure of the reactor drops first and then remains stable, and then pumps in 6.28g N,N-di Methyl octadecylamine and 73.15g of diethylene glycol prepared solution, keep the reaction temperature at 105-110°C, under the reaction pressure of 0.1-0.4MPa, continue to add the remaining 1518g of propylene oxide dropwise, re...

Embodiment 3

[0031] Add 488.6g of syrup with a sucrose mass concentration of 70%, and 9.42g of N,N-dimethyloctadecylamine into a 2.5L polymerization reactor, and then check the stamping of the polymerization reactor to ensure good sealing, and perform nitrogen replacement 5 times, then evacuate to the minimum vacuum degree of -0.093MPa, set the temperature to 85°C and raise the temperature, when it reaches 80°C, start to add propylene oxide dropwise, keep the temperature between 80-85°C, until the added epoxy When the amount of propane is 402g, stop feeding propylene oxide, and start aging at a temperature of 80-105°C for 2-3 hours. With the progress of the aging reaction, the pressure of the reactor first drops and then remains stable, and then pumps in 6.28g N, N-di Methyl octadecylamine and 73.15g of diethylene glycol prepared solution, keep the reaction temperature at 105-110°C, under the reaction pressure of 0.1-0.4MPa, continue to add the remaining 1425g of propylene oxide dropwise, r...

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Abstract

The invention belongs to the technical field of synthesis of polyether polyol, and specifically relates to sucrose polyether polyol and a preparation method thereof. The sucrose polyether polyol is prepared by using liquid syrup and small molecular alcohol as an initiator to polymerize with oxyalkylene under the catalysis of amine. According to the invention, the liquid syrup is used as a raw material, sugar residues in the late phase of a reaction are greatly reduced, and the conversion rate of sucrose is high; the liquid syrup as an intermediate product of crystal sucrose is low in price and has an obvious cost advantage; and in a preparation process, a syrup storage tank can be directly used for feeding without artificial sugar feeding operation, so that the production efficiency is greatly improved, and the labor intensity is greatly reduced. According to the invention, novel amine is used as a catalyst, an after-treatment process is simple, the small molecular alcohol is added after the added amount of the oxyalkylene reaches 20%, a small amount of the oxyalkylene during after-treatment is removed, and the conversion rate of the oxyalkylene is high, so that the preparation method is economical and environment-friendly, and the hydroxyl value of the prepared sucrose polyether polyol is 360-450 mgKOH / g.

Description

technical field [0001] The invention relates to the technical field of polyether polyol synthesis, in particular to a sucrose polyether polyol and a preparation method thereof. Background technique [0002] Sucrose polyether is widely used as the basic raw material of polyurethane foam because of its rich raw material resources. The polyurethane rigid foam produced by it has high heat resistance, strong dimensional stability and high compressive strength. However, in the production process of rigid foam polyether polyols, the quality of the product is directly affected by problems such as incomplete sucrose reaction and high monomer residues; at the same time, the use of crystal sucrose to produce polyether requires the establishment of sugar warehouses, sugar melting, and filtration , transformation and other equipment consume a lot of manpower and financial resources; the conversion rate of olefin oxide in the reaction is low, the reaction is insufficient, and it is harmfu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G65/28C08G18/48
CPCC08G18/48C08G65/2606C08G65/2609C08G65/2672C08G65/2696
Inventor 白维坤宁晓龙董卫程铸洪
Owner SHANDONG INOV NEW MATERIALS CO LTD
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