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Bio-based polyol and preparation method thereof

A bio-based polyol and product technology, applied in the field of chemical materials, can solve problems such as low hydroxyl value, and achieve the effects of high hydroxyl value, uniform distribution, and improved reaction efficiency

Active Publication Date: 2016-07-27
张家港市飞航科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide a bio-based polyol to solve the problems of low hydroxyl value in the prior art

Method used

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  • Bio-based polyol and preparation method thereof
  • Bio-based polyol and preparation method thereof
  • Bio-based polyol and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Dissolve 100g of palm oil in 102mL of anhydrous tetrahydrofuran, add 37.8g of N-bromosuccinimide, and then add 0.94g of catalyst benzoyl peroxide, place the reaction bottle in an oil bath at 35°C and stir for 8h, then Cool to room temperature, filter to remove insoluble matter, concentrate, add ethyl acetate, wash with water, dry over anhydrous sodium sulfate, filter, and concentrate to obtain the brominated product; under nitrogen protection, dissolve the brominated product in 111 mL of anhydrous tetrahydrofuran, Add anhydrous tetrahydrofuran solution of potassium tert-butoxide (43.4g potassium tert-butoxide dissolved in 157mL anhydrous tetrahydrofuran), then react at room temperature for 5h, add water to extract the resulting mixed system twice, then add ethyl acetate to extract twice , combined organic layers, washed with water, dried over anhydrous sodium sulfate, filtered, and concentrated to obtain the unsaturated vegetable oil with increased double bonds; after mi...

Embodiment 2

[0039] Dissolve 100g of coconut oil in 93mL of anhydrous tetrahydrofuran, add 6.7g of N-bromosuccinimide, and then add 0.17g of catalyst benzoyl peroxide, place the reaction bottle in a 40°C oil bath and stir for 9h, then Cool to room temperature, filter to remove insoluble matter, concentrate, add ethyl acetate, wash with water, dry over anhydrous sodium sulfate, filter, and concentrate to obtain the brominated product; under nitrogen protection, dissolve the brominated product in 102 mL of anhydrous tetrahydrofuran, Add anhydrous tetrahydrofuran solution of potassium tert-butoxide (7.7g potassium tert-butoxide dissolved in 30mL anhydrous tetrahydrofuran), then react at room temperature for 6h, add water to extract the resulting mixed system twice, then add ethyl acetate to extract twice , combined organic layers, washed with water, dried over anhydrous sodium sulfate, filtered, and concentrated to obtain the unsaturated vegetable oil with increased double bonds; after mixing ...

Embodiment 3

[0042] Dissolve 100g of camellia oil in 111mL of anhydrous tetrahydrofuran, add 65.4g of N-bromosuccinimide, and then add 1.62g of catalyst benzoyl peroxide, place the reaction bottle in a 45°C oil bath and stir for 10h, then Cool to room temperature, filter to remove insoluble matter, concentrate, add ethyl acetate, wash with water, dry over anhydrous sodium sulfate, filter, and concentrate to obtain the brominated product; under nitrogen protection, dissolve the brominated product in 93 mL of anhydrous tetrahydrofuran, Add anhydrous tetrahydrofuran solution of potassium tert-butoxide (75.0g potassium tert-butoxide dissolved in 271mL anhydrous tetrahydrofuran), then react at room temperature for 7h, add water to extract the resulting mixed system twice, then add ethyl acetate to extract twice , combined organic layers, washed with water, dried over anhydrous sodium sulfate, filtered, and concentrated to obtain the unsaturated vegetable oil with increased double bonds; after mi...

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Abstract

The invention discloses a preparation method of a bio-based polyol. According to the method, vegetable oil is subjected to a bromination reaction under actions of N-bromo-succinimide and benzoyl peroxide, a bromination product is obtained and then subjected to debromination under the action of potassium tert-butoxide, and unsaturated vegetable oil with double bonds increased is obtained; then the unsaturated vegetable oil with the double bonds increased is subjected to an epoxidation-hydroxylation reaction under actions of hydrogen peroxide, formic acid and sulfuric acid, a hydroxyl is introduced, and the bio-based polyol is obtained. Compared with the prior art, the bio-based polyol synthesized with the method has the advantages that the structure is novel, the hydroxyl value is high, distribution is relatively uniform, particularly, the reaction efficiency can be improved after a microchannel modular reaction device is adopted, occurrence of side reactions is controlled, and energy consumption is reduced.

Description

technical field [0001] The invention belongs to the field of chemical materials, and in particular relates to a bio-based polyol and a preparation method thereof. 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 polymerizing polyols or organic amines with ethylene oxide, propylene oxide or butylene oxide, called polyether polyols. ;Another modified gr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C69/675C07C67/31
CPCC07C67/307C07C67/31C07C67/317C07C69/675C07D301/12C07D303/42C07C69/587C07C69/65
Inventor 郭凯方正陶惠新季栋陶俊杰
Owner 张家港市飞航科技有限公司
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