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Vegetable oil polyalcohol as well as preparation method and application of vegetable oil polyalcohol

A technology of vegetable oil polyol and epoxidized vegetable oil, which is applied in the preparation of organic compounds, ether preparation, carboxylate preparation and other directions, can solve the problems of low product quality, prone to cross-linking side reactions, and complicated post-processing, etc. Low viscosity, novel structure, and the effect of controlling side reactions

Inactive Publication Date: 2015-05-13
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the above patents, the synthesis of vegetable oil polyols is based on double bond epoxy and then ring-opening. The ring-opening reagents mainly use small molecule alcohols, alcohol amines or carboxylic acids, but the product quality is not high, the post-treatment is cumbersome, and the reaction is easy. There are problems such as cross-linking side reactions, and it is still necessary to compound a certain proportion of petrochemical polyols when applied to polyurethane materials

Method used

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  • Vegetable oil polyalcohol as well as preparation method and application of vegetable oil polyalcohol
  • Vegetable oil polyalcohol as well as preparation method and application of vegetable oil polyalcohol
  • Vegetable oil polyalcohol as well as preparation method and application of vegetable oil polyalcohol

Examples

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Effect test

Embodiment 1

[0042] Mix 100g epoxidized soybean oil, 58g polyol (product of glycerol and equimolar propylene oxide reaction), 0.03g sodium methylate, place in a conventional kettle-type reactor, pass into nitrogen protection, mechanically stir, Raise the temperature to 130°C and stop the reaction after 3 hours to obtain soybean oil polyol with a hydroxyl value of 561 mgKOH / g and a viscosity of 2950 mPa·s.

Embodiment 2

[0044] Mix 100g epoxy cottonseed oil, 80g polyol (the product of the reaction between pentaerythritol and twice the mole of propylene oxide), 0.05g potassium hydroxide, place in a conventional tank reactor, feed nitrogen protection, mechanically stir, Raise the temperature to 150°C and stop the reaction after 4 hours to obtain the cottonseed oil polyol with a hydroxyl value of 545 mgKOH / g and a viscosity of 4500 mPa·s.

Embodiment 3

[0046] Get 100g epoxidized rapeseed oil as component A, and get 0.02g sodium n-butoxide and dissolve it in 55g polyol (the product of the reaction of ethylene glycol with twice the mole of propylene oxide) as component B. Components and components B are pumped into the microchannel modular reaction device at the same time, and the reaction is carried out in the sandwich reactor HC at normal pressure and 130°C. The injection rates of components A and B are 3.0mL / min and 1.6mL / min respectively. , keep the reaction residence time 8min, collect the reaction product to obtain the rapeseed oil polyol, its hydroxyl value is 380mgKOH / g, and its viscosity is 3050mPa·s.

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Abstract

The invention discloses vegetable oil polyalcohol as well as a preparation method and an application of the vegetable oil polyalcohol. The vegetable oil polyalcohol is prepared by carrying out ring-opening reaction on epoxy vegetable oil and a polyhydroxy compound. Compared with the prior art, the vegetable oil polyalcohol prepared by adopting a novel ring-opening reagent is novel in structure, high in hydroxyl value, low in viscosity and capable of completely substituting the traditional petrochemical polyalcohol to be applied to preparation of a polyurethane foam material. Meanwhile, the preparation method disclosed by the invention is simple in process; the obtained vegetable oil polyalcohol does not need to be after-treated and is very suitable for industrial production; and particularly, after a tubular reactor is selected, the reaction efficiency can be increased, the side reaction can be controlled, and the energy consumption can be reduced.

Description

technical field [0001] The invention belongs to the technical field of chemical materials and production thereof, and relates to a vegetable oil polyol and its preparation method and application. The vegetable oil polyol synthesized by the invention is suitable for preparing polyurethane materials. 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 etc. 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 polym...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/28C08G18/48
CPCC07C41/03C07C67/31C07C69/708C08G18/36C08G2101/00C07C43/132
Inventor 郭凯陶惠新季栋方正欧阳平凯
Owner NANJING UNIV OF TECH
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