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Vegetable oil polyhydric alcohol as well as preparation method and application of vegetable oil polyhydric alcohol

A technology of vegetable oil polyol and epoxidized vegetable oil, 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: 2016-05-04
NANJING TECH UNIV
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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 polyhydric alcohol as well as preparation method and application of vegetable oil polyhydric alcohol
  • Vegetable oil polyhydric alcohol as well as preparation method and application of vegetable oil polyhydric alcohol
  • Vegetable oil polyhydric alcohol as well as preparation method and application of vegetable oil polyhydric alcohol

Examples

Experimental program
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Effect test

Embodiment 1

[0041] Mix 100g epoxidized soybean oil, 75g polyol (the product of the reaction between pentaerythritol and equimolar propylene oxide), and 0.03g sodium methoxide, place it in a conventional kettle-type reactor, feed nitrogen protection, mechanically stir, and heat up to 130°C, stop the reaction after 3 hours of reaction to obtain soybean oil polyol with a hydroxyl value of 561 mgKOH / g and a viscosity of 2950 mPa·s.

Embodiment 2

[0043] 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 B components are pumped into the microchannel modular reaction device at the same time, and the reaction is carried out in the sandwichreactorHC at normal pressure and 130°C. The injection rates of A and B components are 3.0mL / min and 1.6mL / min respectively, keeping The reaction residence time was 8 minutes, and the reaction product was collected to obtain the rapeseed oil polyol with a hydroxyl value of 380 mgKOH / g and a viscosity of 3050 mPa·s.

Embodiment 3

[0045] Get 100g epoxy tung oil as component A, and get 0.02g sodium tert-butoxide and dissolve it in 67g polyol (product of 1,2-propanediol and equimolar propylene oxide reaction) to be component B, mix A, Component B is pumped into the microchannel modular reaction device at the same time, and the reaction is carried out in the Hastelloy microchannel reactor at normal pressure and 140 ° C. The injection rates of A and B components are 1.2 mL / min and 0.8 mL / min, respectively. mL / min, keep the reaction residence time 10min, collect the reaction product to obtain tung oil polyol, its hydroxyl value is 485mgKOH / g, and its viscosity is 2850mPa·s.

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Abstract

The invention discloses vegetable oil polyhydric alcohol as well as a preparation method and application of the vegetable oil polyhydric alcohol. The vegetable oil polyhydric alcohol is prepared by a ring-opening reaction of epoxy vegetable oil and a polyhydroxy compound. Compared with the prior art, the vegetable oil polyhydric alcohol prepared by adopting a novel ring opening agent has a novel structure, a high hydroxyl value and low viscosity, and can be used for completely replacing traditional petrochemical polyhydric alcohol to be applied to preparation of a polyurethane foam material. Meanwhile, the method is simple in process and the obtained product does not need to be subjected to post treatment and is very suitable for industrialized production; particularly, after a tubular reactor is selected, the reaction efficiency can be improved, a side reaction is controlled and the energy consumption is 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): C07C67/31C07C69/708C08G18/36C08G101/00
CPCC07C41/03C07C67/31C07C69/708C08G18/36C08G2101/00C07C43/132
Inventor 郭凯陶惠新季栋方正欧阳平凯
Owner NANJING TECH UNIV
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