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A kind of polyurethane polyol and its preparation method and application

A polyurethane polyol and halogen alcohol technology, applied in the field of polyurethane polyol and its preparation, can solve the problems of low product quality, non-continuous production, long reaction time, etc., and achieve short reaction time, good flame retardant effect and stable size good sex effect

Active Publication Date: 2020-11-27
NANJING TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the dependence of the current preparation of polyurethane polyols on petrochemical resources, and green and renewable epoxy vegetable oil resources are introduced; at the same time, the reaction time and energy consumption of flame-retardant polyurethane polyols produced by batch methods are long and energy consumption is high , The product quality is not high, and continuous production is not possible. A continuous method is proposed to use epoxy vegetable oil and elements containing phosphorus, chlorine and bromine to prepare flame-retardant polyurethane polyols.

Method used

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  • A kind of polyurethane polyol and its preparation method and application
  • A kind of polyurethane polyol and its preparation method and application
  • A kind of polyurethane polyol and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Get 173g three-(1-aziridinyl) phosphine oxide solution and be dissolved in 400ml dichloroethane to obtain solution A, 189g3-chloro-1-propanol and 7g fluoroboric acid are dissolved in 400ml dichloroethane to obtain mixed solution B, take 74.5g ethylene glycol and 4.3g fluoroboric acid were dissolved in 800ml dichloroethane to obtain mixed solution C, 237g epoxy soybean oil and 0.12g sodium carbonate were dissolved in 1600ml dichloroethane to obtain solution D, 160g propylene oxide and 0.047g Sodium carbonate was dissolved in 3200ml of dichloroethane to obtain solution E. Wherein the molar ratio of three-(1-aziridinyl) phosphine oxide solution, 3-chloro-1-propanol, and ethylene glycol is 1:2:1.2, and the molar ratio of epoxy group and hydroxyl compound in epoxy vegetable oil Ratio 1:1, the molar ratio of epoxidized soybean oil to propylene oxide is 1:11; the solution A and the solution B are pumped into the first micro-mixer at the same time respectively, and after being ...

Embodiment 2

[0045] Get 173g three-(1-aziridinyl) phosphine oxide solution and be dissolved in 400ml dichloroethane to obtain solution A, 179.6g3-chloro-1-propanol and 7g fluoroboric acid are dissolved in 400ml dichloroethane to obtain mixed solution B, Get 93.1g of ethylene glycol and 4.3g of fluoroboric acid dissolved in 800ml of dichloroethane to obtain mixed solution C, get 237g of epoxidized soybean oil and 0.12g of sodium carbonate dissolved in 1600ml of dichloroethane to obtain solution D, 160g of propylene oxide and 0.047 g sodium carbonate was dissolved in 3200ml dichloroethane to obtain solution E. Wherein the molar ratio of three-(1-aziridinyl) phosphine oxide solution, 3-chloro-1-propanol and ethylene glycol is 1: 1.9: 1.5, and the molar ratio of epoxy group and hydroxyl compound in epoxy vegetable oil Ratio 1:1, the molar ratio of epoxidized soybean oil to propylene oxide is 1:11; the solution A and the solution B are pumped into the first micro-mixer at the same time respecti...

Embodiment 3

[0047] The difference from Example 1 is that the flow rates of solutions A, B, C, D, and E are respectively 0.25ml / min, 0.25ml / min, 0.5ml / min, 1ml / min, 2ml / min; the first microchannel reaction The volume of the reactor is 3ml, the temperature is 60°C, and the reaction time is 6min; the volume of the second microchannel reactor is 7ml, the temperature is 60°C, and the reaction time is 7min; the volume of the third microchannel reactor is 24ml, the temperature is 120°C, and the reaction time is 12 minutes; the volume of the fourth microchannel reactor is 56 ml, the temperature is 120° C., and the reaction time is 14 minutes.

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Abstract

The invention discloses polyurethane polyol as well as a preparation method and application of polyurethane polyol. The preparation method comprises the following steps: (1) reacting tri-(1-aziridinyl) phosphine oxide, halogenalcoholates, a first acid catalyst and an inert solvent in a first microchannel reactor to obtain a compound; (2) reacting the compound obtained in the step (1), a diol compound, a second acid catalyst and the inert solvent in a second microchannel reactor to obtain a hydroxyl compound; (3) reacting the hydroxyl compound, epoxidized vegetable oil, a first alkaline catalyst and the inert solvent in a third microchannel reactor to obtain vegetable oil polyol; and (4) reacting the vegetable oil polyol, epoxypropane, a second alkaline catalyst and the inert solvent in a fourth microchannel reactor to obtain polyurethane polyol. Polyurethane polyol prepared by using the preparation method is light in color, low in viscosity and good in flowability, has a flame retardant effect due to the containing of elements including phosphorus, chlorine and bromine and can be used for preparing a polyurethane soft foam material.

Description

technical field [0001] The invention relates to a polyurethane polyol and its preparation method and application. The polyurethane polyol can be used in the preparation of flame-retardant flexible polyurethane foam. Background technique [0002] In recent years, due to the excellent properties of polyurethane materials, China's polyurethane industry has developed rapidly. Among them, flexible foam plastics, which account for a large part of polyurethane production, are light and soft, insulating, breathable, non-toxic, good in resilience, small in compression deformation, excellent in moisture resistance and aging resistance, and have oil resistance, organic solvent resistance, sound insulation and heat preservation. And many other excellent properties, it has been widely used in various fields and has a wide range of uses. However, soft foam plastics have low density and large specific surface area, and are easier to burn than non-foam materials. Combustion and decompositi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/36C08G18/32C08G18/08C08G101/00
CPCC08G18/08C08G18/36C08G18/3889C08G2101/00
Inventor 郭凯方正刘成扣李昕胡欣段金电欧阳平凯
Owner NANJING TECH UNIV
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