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A kind of polyurethane polyol and its preparation method and application

A polyurethane polyol and reaction technology, applied in chemical instruments and methods, chemical/physical/physical-chemical reactors, chemical/physical/physical-chemical processes, etc., can solve the uncontrollable and cross-linking process of epoxy vegetable oil ring-opening reaction , high viscosity, to achieve the effect of convenient operation, high reaction efficiency and good quality

Active Publication Date: 2021-04-20
NANJING TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Purpose of the invention: the technical problem to be solved by this invention is to provide a kind of polyurethane polyol for the deficiencies in the prior art, to overcome the dependence of the current preparation of polyurethane polyol on petrochemical resources, green and renewable epoxy vegetable oil resources are introduced; based on Structural simulation and design, at the same time, try to manufacture molecules with different activity of the same functional group, reduce crosslinking and functional utilization as much as possible, take into account the economic effect, use cheap reagents to construct high-quality vegetable oil polyurethane polyol; at the same time, for the existing epoxy vegetable oil The ring-opening reaction process is uncontrollable, which leads to the problems of self-crosslinking and high viscosity of the product. A method for preparing polyurethane polyols by continuous method

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
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Effect test

Embodiment 1

[0050] (1) Preparation of polyurethane polyol

[0051] Take 25.2g of 2,3-epoxybutylene and 12.30g of fluoroboric acid aqueous solution (40wt.%) and dissolve in 85mL of dichloroethane to obtain mixed solution A, take 52.5g of triethylene glycol and dissolve it in 190mL of dichloroethane To obtain solution B, 100 g of epoxidized soybean oil (0.406 mol of epoxy groups) was dissolved in 300 mL of dichloroethane to obtain solution C. The mixed solution A and the solution B are pumped into the first micro-mixer at the same time, and after being fully mixed, they are passed into the first microchannel reactor for reaction to obtain the reaction effluent containing the hydroxyl compound, and the reaction effluent containing the hydroxyl compound and the solution C are simultaneously pumped into the second micro-mixer, fully mixed and then passed into the second micro-channel reactor for ring-opening reaction to obtain a reaction effluent containing vegetable oil polyols. Wherein solu...

Embodiment 2

[0055] (1) Preparation of polyurethane polyol

[0056] Take 25.2g 2,3-epoxybutylene and 12.30g fluoroboric acid aqueous solution (40wt.%) and dissolve in 85mL dichloroethane to obtain mixed solution A, take 48.0g triethylene glycol and dissolve it in 180mL dichloroethane To obtain solution B, 100 g of epoxidized soybean oil (0.418 mol of epoxy group) was dissolved in 370 mL of dichloroethane to obtain solution C. The mixed solution A and the solution B are pumped into the first micro-mixer at the same time, and after being fully mixed, they are passed into the first microchannel reactor for reaction to obtain the reaction effluent containing the hydroxyl compound, and the reaction effluent containing the hydroxyl compound and the solution C are simultaneously pumped into the second micro-mixer, fully mixed and then passed into the second micro-channel reactor for ring-opening reaction to obtain a reaction effluent containing vegetable oil polyols. Wherein solution A, B, the f...

Embodiment 3

[0060] (1) Preparation of polyurethane polyol

[0061] Dissolve 29.7g of 2,3-epoxybutane and 14.50g of fluoroboric acid aqueous solution (40wt.%) in 100mL of dichloroethane to obtain mixed solution A, and dissolve 56.25g of triethylene glycol in 230mL of dichloroethane To obtain solution B, 100 g of epoxidized soybean oil (0.406 mol of epoxy group) was dissolved in 350 mL of dichloroethane to obtain solution C. The mixed solution A and the solution B are pumped into the first micro-mixer at the same time, and after being fully mixed, they are passed into the first microchannel reactor for reaction to obtain the reaction effluent containing the hydroxyl compound, and the reaction effluent containing the hydroxyl compound and the solution C are pumped into the second micro-mixer at the same time, and after being fully mixed, they are passed into the second micro-channel reactor for ring-opening reaction to obtain a reaction effluent containing vegetable oil polyols. Wherein sol...

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Abstract

The invention discloses a polyurethane polyol, a preparation method and application thereof. The preparation method of polyurethane polyol is: (1) dissolving 2,3-butylene oxide and an acidic catalyst in an inert solvent to obtain solution A; dissolving triethylene glycol in an inert solvent to obtain solution B; Epoxy vegetable oil is dissolved in an inert solvent to obtain solution C; (2) solution A, B are pumped into the first micro-mixer simultaneously respectively, and after mixing, pass into the first micro-reactor for reaction; (3) in step ( 2) while carrying out, the solution C and the first microreactor effluent are pumped into the second micromixer respectively simultaneously, after mixing, pass into the second microreactor, react, and separate to obtain vegetable oil polyol; (4) Dissolving vegetable oil polyol in an inert solvent to obtain solution D; dissolving propylene oxide and a basic catalyst in an inert solvent to obtain solution E; simultaneously pumping solution D and solution E into a tank reactor for reaction to obtain Polyurethane polyols.

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 polyurethane elastomers. Background technique [0002] Polyurethane is a polymer with repeating structural units of urethane segments produced by the reaction of isocyanate and polyol. Polyurethane products are divided into two categories: foamed products and non-foamed products. Foamed products include soft, rigid, and semi-rigid polyurethane foams; non-foamed products include coatings, adhesives, synthetic leather, elastomers, and elastic fibers. Polyurethane materials have excellent performance, wide range of uses, and many types of products, among which polyurethane foam is the most widely used. [0003] There are three main types of polyols used in polyurethane. One is a polymer obtained by polymerizing polyols or organic amines with ethylene oxide, propylene oxide or butylene oxide, called polyethe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G65/28C08G18/67C08G18/76C08G18/66C08G18/10C08G18/32B01J19/00
CPCC08G65/2609C08G18/6795C08G18/7671C08G18/10B01J19/0093B01J2219/00889C08G18/3206C08G18/4895C08G18/2081C08G18/1833C08G18/246C08G18/165B01J2219/00781B01J2219/0081B01J2219/00961B01J2219/00984C08G18/08C08G18/3203C08G18/36C08G18/6407C08G18/7685C08G71/04
Inventor 郭凯方正杨曼陶俊杰朱宁何伟陈可泉欧阳平凯
Owner NANJING TECH UNIV