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A kind of vegetable oil polyol without suspension chain, preparation method and application

A vegetable oil polyol and vegetable oil technology, applied in the field of preparation and vegetable oil polyol, can solve the problems of high viscosity and large hydroxyl value, and achieve the effects of high tear strength, low density, moderate hydroxyl value and viscosity

Active Publication Date: 2021-09-21
NANJING TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Purpose of the invention: the technical problem to be solved by the present invention is to provide a vegetable oil polyol, its preparation method and application to solve the problems of high hydroxyl value and high viscosity of the existing vegetable oil polyol products

Method used

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  • A kind of vegetable oil polyol without suspension chain, preparation method and application
  • A kind of vegetable oil polyol without suspension chain, preparation method and application
  • A kind of vegetable oil polyol without suspension chain, preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] (1) Preparation of peanut oil polyol

[0038]10g of peanut oil and 40mL of deionized water were added to a five-necked flask equipped with a mechanical stirrer, a condensing reflux tube, an infrared probe, and a thermometer. Under vigorous stirring, the ozone generated by the ozone generator was passed into the reaction system to carry out the ozonation reaction. Tail gas is absorbed by potassium iodide solution, the amount of ozone introduced is 0.4L / min, react at 20°C for 8 hours, and after post-treatment, peanut oil derivative I without suspended chains can be obtained;

[0039] Under nitrogen protection, use tetrahydrofuran as a solvent, add a certain amount of zinc powder into a three-necked flask, cool the reaction solution to zero, add a certain amount of titanium tetrachloride dropwise, and reflux for 3 hours, cool the reaction solution, and add to the reaction solution A certain amount of pyridine was slowly added to the reaction liquid, and after 20 minutes of...

Embodiment 2

[0048] (1) According to figure 1 The synthetic process flow chart shown prepares cottonseed oil polyol:

[0049] Add 10g of cottonseed oil and 40mL of deionized water into a five-necked flask equipped with a mechanical stirrer, a condensing reflux tube, an infrared probe, and a thermometer. Under vigorous stirring, the ozone generated by the ozone generator is passed into the reaction system for ozonation reaction , the tail gas is absorbed by potassium iodide solution, the ozone flux is 0.6L / min, react at 20°C for 10h, and after post-treatment, the cottonseed oil derivative I without suspended chains can be obtained;

[0050] Under nitrogen protection, use tetrahydrofuran as a solvent, add a certain amount of zinc powder into a three-necked flask, cool the reaction solution to zero, add a certain amount of titanium tetrachloride dropwise, and reflux for 3 hours, cool the reaction solution, and add to the reaction solution A certain amount of pyridine was slowly added to the ...

Embodiment 3

[0059] (1) Preparation of castor oil polyol

[0060] Add 10g of castor oil and 40mL of deionized water into a five-necked flask equipped with a mechanical stirrer, a condensing reflux tube, an infrared probe, and a thermometer. Under vigorous stirring, the ozone generated by the ozone generator is passed into the reaction system for ozonation reaction , the tail gas is absorbed by potassium iodide solution, the ozone flux is 0.6L / min, react at 20°C for 10h, and the castor oil derivative I without dangling chains can be obtained after post-treatment;

[0061] Under nitrogen protection, use tetrahydrofuran as a solvent, add a certain amount of zinc powder into a three-necked flask, cool the reaction solution to zero, add a certain amount of titanium tetrachloride dropwise, and reflux for 3 hours, cool the reaction solution, and add to the reaction solution A certain amount of pyridine was slowly added to the reaction liquid, and after reacting for 20 minutes, castor oil derivati...

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Abstract

The invention discloses a vegetable oil polyol without suspended chains, its preparation method and its application. Vegetable oil and deionized water are mixed and subjected to ozonation reaction with ozone to generate vegetable oil derivative I without suspended chains, which is produced under the protection of inert gas. , using tetrahydrofuran as a solvent, adding zinc powder, cooling the reaction solution to zero, dropwise adding titanium tetrachloride, reflux reaction and cooling, then adding pyridine to the reaction solution, and adding vegetable oil derivative I dropwise to the reaction solution after the reaction and benzaldehyde, heated to reflux, and the product was subjected to column chromatography to obtain vegetable oil derivative II, then mixed with formic acid and metal oxides, and hydrogen peroxide was added dropwise to raise the temperature for reaction, and the reaction product was washed and dried to obtain vegetable oil derivative III, which was used as component A , Methyl 5-hydroxymethyl-2-furancarboxylate is used as component B, and injected into a micro-mixer at the same time, after mixing, it enters a micro-reactor for ring-opening reaction to obtain.

Description

technical field [0001] The invention relates to the technical field of vegetable oil polyols, in particular to a vegetable oil polyol, a preparation method and application. Background technique [0002] Polyurethane (PU), short for polyurethane, is a kind of polymer compound with many repeating -NHCOO-groups on the main chain. Industrial production is mainly obtained through the co-reaction of binary or multi-component organic isocyanate compounds and various active hydrogen-containing compounds. By controlling the type and ratio of "rigid segment" and "soft segment" in the molecule, it can be made into foam plastics, elastomers, fibers, coatings, adhesives, synthetic leather, waterproof materials and paving materials, etc. Large products are widely used in transportation, construction, machinery, electronic equipment, furniture, food processing, textile and clothing, synthetic leather, printing, mining and metallurgy, petrochemical, water conservancy, national defense, spo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C67/31C07C69/675C08G18/36C09D5/18C09D175/04
CPCC07C67/31C07C67/313C07C67/343C07D303/40C08G18/36C09D5/18C09D175/04C07C69/675C07C69/716C07C69/618
Inventor 郭凯何伟方正陈昌主陈可泉黄益平刘福建马仁
Owner NANJING TECH UNIV
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