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Bio-based polyhydric alcohol prepared by using rape seed oil

A bio-based polyol, rapeseed oil technology, applied in the preparation of carboxylate, the preparation of organic compounds, organic chemistry and other directions, can solve the problems of inconvenient purchase, limited production capacity, affecting product production, etc., to achieve convenient purchase, environmental protection The effect of low pollution and narrow molecular weight distribution

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

AI Technical Summary

Problems solved by technology

In addition, the domestic production capacity of oxyolefins is limited and needs to be imported, which is inconvenient to purchase and directly affects the production of products

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

[0064] Add 1000g of refined rapeseed oil, 211g of glycerol, and 1.1g of potassium hydroxide into a 2L glass kettle, stir, heat up to 120-240°C, and carry out alcoholysis reaction for 5 hours. Leave it on for 3-6 hours. Cool down to 75°C, add 3.6g of 50% phosphoric acid, keep for 30 minutes, add 250g of water, stir for 15 minutes, separate after standing, add 250g of water, stir for 15 minutes, separate after standing, and obtain mixed unsaturated fatty acid monoester 1015g.

Embodiment 2

[0066] Get mixed unsaturated fatty acid monoester 1185g and 250 grams of formic acid (80%), 60 grams of acid clay in the above-mentioned embodiment 1 and add in the glass kettle of 2L, stir, add dropwise the 37% hydrogen peroxide of 376 grams, at 30 ~ React at 70°C for 6-10 hours, separate the upper layer after standing still; control the temperature of the upper layer mixed epoxy fatty acid monoester at 70-80°C, wash with 5% sodium carbonate twice, then wash with saturated brine and soft water Each 2 times, finally remove water with the method of underpressure distillation, obtain mixed epoxy fatty acid monoester, detect its epoxy value 4.50%.

Embodiment 3

[0068] Mix the product in Example 2 with 1245 g of epoxy fatty acid monoester, add 420 g of diethylene glycol, and 4.2 g of potassium hydroxide, add it to a 2L glass kettle, stir and heat up, and control the reaction temperature at 65 to 170° C., and the reaction time is 5 ~9 hours. Afterwards, it is refined, and the specific method is as follows: add 13.7g of 50% phosphoric acid for neutralization for 15 minutes, add 2g 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 Finally, the product 1400g refined bio-based polyol was obtained, and the hydroxyl value was 475mgKOH / g.

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Abstract

The invention discloses a rape oil preparing biological radical polyatomic alcohol, which comprises the following steps: carrying on alcoholysis reaction with rape oil alcohol and accelerant; generating mixed unsaturated fatty acid monoesters; adding in epoxidation agent to proceed epoxidation reaction; getting mixed epoxy aliphatic acid monoesters-biological radical polyatomic alcohol. The invention has high reaction active, which is convenience to prepare high-functionality product.

Description

technical field [0001] The invention relates to a bio-based polyol prepared by using rapeseed oil, which is to generate mixed unsaturated fatty acid monoester through alcoholysis reaction of rapeseed oil and alcohol, and then epoxidize the unsaturated double bond, and then The epoxy bond is ring-opened to prepare a mixed hydroxy fatty acid monoester, referred to as a bio-based polyol, which belongs 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 o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C67/00C07C69/00
Inventor 芮敬功姚志洪罗振扬邢益辉韦华文春俊
Owner HONGBAOLI GRP CO LTD
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