Bio-based polyhydric alcohol prepared by using rape seed oil

A bio-based polyol and rapeseed oil technology, which is applied in the preparation of carboxylic acid esters, the preparation of organic compounds, organic chemistry, etc., can solve the problems that the applicant has not yet discovered the successful report of the research, and achieve a strong adjustability of functionality , high product yield, and convenient purchase

Inactive Publication Date: 2006-09-27
HONGBAOLI GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Based on this, people have turned the direction of chemical research to renewable natural resources fo

Method used

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  • Bio-based polyhydric alcohol prepared by using rape seed oil
  • Bio-based polyhydric alcohol prepared by using rape seed oil
  • Bio-based polyhydric alcohol prepared by using rape seed oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Add 1000g of refined rapeseed oil, 250g of formic acid (80%), and 45g of 50% sulfuric acid into a 2L glass kettle, stir, add 375g of 37% hydrogen peroxide dropwise, and react at 30 to 70°C for 5 to 10 minutes. Hours, stand and separate the acid water by layering, add 6% sodium carbonate solution to neutralize, then wash 3 times with water at a temperature of 70-80°C, reduce pressure, and remove residual water at a vacuum of 100-700kPa. The product epoxy rapeseed oil is obtained, and the epoxy value of the detected product is 5.21%.

Embodiment 2

[0058] Add 980g of refined rapeseed oil, 536g of benzoic acid, and 60g of 50% phosphoric acid into a 2L glass kettle, stir, add dropwise 410g of 38% hydrogen peroxide, and react at 30-70°C for 5-10 hours. Set the layers to separate the acid water, add 5% sodium carbonate solution to neutralize, then wash with water at a temperature of 70-80°C for 3 times, reduce pressure, and remove residual water at a vacuum degree of 100-700kPa. The product epoxy rapeseed oil is obtained, and the epoxy value of the detected product is 5.71%.

Embodiment 3

[0060] Add 1050g of the product epoxy rapeseed oil in Example 1 into a 2L glass kettle, then add 420g of diethylene glycol, 4.9g of potassium hydroxide, stir and heat up, control the reaction temperature at 65-170°C, and the reaction time is 5-10 Hour. Add 211g of glycerol, control the temperature at 120-240°C, carry out the alcoholysis reaction for 4 hours, then keep it for 4 hours under the condition of vacuum degree of 100-750kPa, and then take a sample for analysis, and the crude product with a hydroxyl value of 476mgKOH / g is found. Afterwards, it is refined, and the specific method is as follows: add 16g of 50% phosphoric acid for neutralization for 15 minutes, add 3g of magnesium silicate for adsorption, and then dehydrate for 60 minutes at a vacuum degree of 100-750KPa and a temperature of 80-120°C, and filter , to obtain product 1540g refined bio-based polyol.

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Abstract

The invention discloses a rape oil preparing biological radical polyatomic alcohol method, which comprises the following steps: naking the rape oil and epoxidation agent to carry on epoxidation reaction; generating epoxy rape oil; proceeding epoxy key open cycle reaction with generated epoxy rape oil and nucleophilic reagent with reactive hydrogen; getting mixed hydroxy fatty acid glycerin fat; adding in amine or alcohol amine; heating-up to proceeding alcoholysis reaction; getting mixed hydroxy fatty acid monoesters-biological radical polyatomic alcohol. The invention has degree of functionality and high reaction active. The raw material is cheap and easy to get.

Description

technical field [0001] The invention relates to a bio-based polyol prepared from rapeseed oil, which is epoxidized by epoxidizing the unsaturated double bonds contained in the rapeseed oil, and then ring-opening the epoxy bond, and the product can be reacted with alcohol The alcoholysis reaction prepares mixed hydroxy fatty acid monoester polyols, referred to as bio-based polyols, which belong to the field of organic synthesis. Background technique [0002] With the rapid development of the global economy, the global demand for all polyols is growing rapidly. There are three main types of polyols used in the past, one is polyol or organic amine as the initiator through the polymer with propylene oxide or ethylene oxide, called polyether polyol (abbreviated as PPG); the other is modified Graft polyether polyol is based on PPG, and then it is obtained by bulk polymerization reaction of vinyl monomer in polyol. It is called polymer polyol (abbreviated as POP), and it is often ...

Claims

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Application Information

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IPC IPC(8): C07C67/00C07C69/00
Inventor 芮敬功邢益辉罗振扬姚志洪韦华蔡达红
Owner HONGBAOLI GRP CO LTD
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