Epoxidation vegetable oil preparation method

A technology of epoxidizing vegetable oil and catalyst, which is applied in the field of plasticizers, can solve problems such as difficult industrial production, and achieve the effects of improving reaction safety, increasing epoxy value, and speeding up reaction speed

Active Publication Date: 2013-01-09
SHANDONG JIQING CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, it is not easy to

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Preparation of peroxy intermediate: Mix the mixed acid catalyst comprising organic acid (acetic acid) and strong acid (98wt% concentrated sulfuric acid and 732 resin) evenly, the mass ratio of organic acid and strong acid in the mixed acid catalyst is 5:3, stir and mix the peroxyacid stabilizer and 30wt% hydrogen peroxide evenly, and add the mixed acid catalyst dropwise to the mixed solution of the peroxyacid stabilizer and hydrogen peroxide at a temperature of 35°C. The peroxyacid stabilizer includes The mass ratio of ethylenediaminetetraacetic acid and potassium sodium tartrate is 1:0.2. The addition amount of mixed acid catalyst and peroxyacid stabilizer is 5% and 4% of pure hydrogen peroxide respectively. 10h to obtain the mixed solution of the peroxygen intermediate.

[0034] (2) Epoxidation reaction: add an epoxidation stabilizer to soybean oil, the epoxidation stabilizer includes urea, ethylenediaminetetraacetic acid, potassium sodium tartrate and water glas...

Embodiment 2

[0036] (1) Preparation of peroxy intermediates: Mix the mixed acid catalyst including organic acid (formic acid and acetic acid) and strong acid (98wt% concentrated sulfuric acid and aluminum sulfate) evenly, and the mass ratio of organic acid and strong acid in the mixed acid catalyst is 15:5, stir and mix the peroxyacid stabilizer and 80wt% hydrogen peroxide evenly, and add the mixed acid catalyst dropwise to the mixed solution of the peroxyacid stabilizer and hydrogen peroxide when the temperature is 25°C. The peroxyacid stabilizer includes The mass ratio of ethylenediaminetetraacetic acid and potassium sodium tartrate is 5:0.5, the addition amount of the mixed acid catalyst and the peroxyacid stabilizer are respectively 12% and 5% of the hydrogen peroxide, after the dropwise addition is completed, stand at 25°C After 24 hours of reaction, a mixed solution of the peroxy intermediate was obtained.

[0037] (2) Epoxidation reaction: Add an epoxidation stabilizer to soybean oi...

Embodiment 3

[0039] (1) Preparation of peroxy intermediates: Mix the mixed acid catalyst including organic acid (formic acid) and strong acid (phosphoric acid and 732 resin) evenly, the mass ratio of organic acid and strong acid in the mixed acid catalyst is 10:4, Stir and mix the peroxyacid stabilizer and 50wt% hydrogen peroxide evenly, and add the mixed acid catalyst dropwise to the mixed solution of the peroxyacid stabilizer and hydrogen peroxide when the temperature is 30°C, the peroxyacid stabilizer The agent includes ethylenediaminetetraacetic acid and potassium sodium tartrate with a mass ratio of 3:0.3. The added amount of the mixed acid catalyst and peroxyacid stabilizer is respectively 10% and 3% of hydrogen peroxide. Stand for reaction for 15h to obtain the mixed solution of the peroxy intermediate.

[0040] (2) Epoxidation reaction: add an epoxidation stabilizer to linseed oil, the epoxidation stabilizer includes urea, ethylenediaminetetraacetic acid, potassium sodium tartrate ...

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PUM

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Abstract

The invention discloses an epoxidation vegetable oil preparation method. The epoxidation vegetable oil preparation method includes steps of firstly, uniformly mixing mixed acid catalyst containing organic acid and strong acid, uniformly mixing and stirring peroxy acid stabilizer and hydrogen peroxide, dripping the mixed acid catalyst in to mixed solution of the peroxy acid stabilizer and the hydrogen peroxide at the temperature of 25-35 DEG C, and reacting to obtain mixed solution of peroxide intermediates; and secondly, adding the epoxidation stabilizer into vegetable oil, dripping the mixed solution of the peroxide intermediates at the temperature of 65-95 DEG C, reacting for 10-30 minutes with heat preservation; dripping hydrogen peroxide solution, reacting four 1-4 hours with heat preservation, and obtaining epoxidation vegetable oil products after treatment. The vegetable oil is epoxidized by three steps, and suitable catalysts and stabilizers are selected, reaction time is shortened, and thereby reaction selectivity is high, side reaction is reduced, epoxidation time is short, reaction conversion rate is increased, production cost is reduced and production safety is improved.

Description

technical field [0001] The invention relates to the technical field of plasticizers, in particular to the preparation of epoxidized vegetable oil used as rubber and plastic plasticizers. Background technique [0002] my country is a large agricultural country. Agriculture as the primary industry accounts for a large proportion of the national economy. However, the degree of processing of oil crops in my country is relatively low, and the varieties of deep-processed products are relatively single, mainly edible oil. Using vegetable oil as a plasticizer and toughener for engineering plastics can broaden the consumption channels of vegetable oil, which is conducive to increasing the processing depth of agricultural products, increasing the added value of agricultural products, and increasing the conversion of agricultural products, thus helping to form a new agricultural industry. point of economic growth. [0003] The main component of vegetable oil is triglyceride formed by ...

Claims

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Application Information

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IPC IPC(8): C11C3/00
Inventor 甄曰菊章俭司同薛莲
Owner SHANDONG JIQING CHEM
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