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Method for producing di(trimethylolpropane) trioleate

A technology of ditrimethylolpropane oleate and ditrimethylolpropane, which is applied in the field of organic chemical raw material manufacturing, can solve problems such as limited lifespan, and achieve the effects of saving high energy consumption, economical production process, and guaranteed quality

Inactive Publication Date: 2015-12-09
NANTONG BAICHUAN NEW MATERIAL CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Even though some solid catalysts can be recycled, as the active components of the solid-supported catalysts are continuously eluted during use, in fact these catalysts can be reused for a limited lifespan

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Step S1 : For the current batch of ditrimethylolpropane and oleic acid purchased, there are 4 hydroxyl groups in a ditrimethylolpropane molecule, so the theoretical molar ratio of oleic acid to ditrimethylolpropane is 4;

[0043] Step S2: According to the experience obtained from previous synthesis, the more appropriate molar ratio of ditrimethylolpropane and oleic acid is 1.05:4 ；

[0044] Step S3: For a small test, first put a magnetic stirrer in a 500mL three-necked bottle, put in 0.8mol (225.976g) of oleic acid, and then put in 0.21mol (50.569g) of ditrimethylolpropane accordingly, and turn on the oil The temperature rise switch of the bath heater heats the materials in the kettle. When the temperature in the kettle rises to 110°C, add 1% (2.79g) p-toluene with a total mass of 278.545g of oleic acid and ditrimethylolpropane Use sulfonic acid as a catalyst, insert the nitrogen tube under the liquid surface, feed nitrogen at a flow rate of 30mL / min, turn on the ...

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Abstract

A related method for producing di(trimethylolpropane) trioleate is characterized by comprising aiming at di-trimethylolpropane and oleic acid which are purchased at the current batch, firstly determining a theoretical molar ratio demanded for a complete esterification reaction with oleic acid according to the hydroxyl quantity of a molecule of the employed di-trimethylolpropane, or selecting a small-experiment molar ratio corresponding to a current small experiment according to a formed experimental molar ratio of a same-kind raw material, then enabling the acid value of a current small-experiment sample is 1.5 mg KOH / g or less by adjusting the molar ratio through one or multiple times of small experiments; decoloring, performing pumping filtration, detecting the separation effect of a synthesis solution and water, and taking the small-experiment molar ratio, by means of which, the acid value is 1.5 mg KOH / g in the current small experiment and the separation effect of the synthesis solution and water accords with requirement, as the raw material ratio of the current-batch raw material for large-scale production, thereby realizing economical reasonable production of di(trimethylolpropane) trioleate.

Description

technical field [0001] The invention belongs to the field of organic chemical raw material production, and relates to a method for producing ditrimethylolpropane oleate. Background technique [0002] Among the many fatty acid esters, there is a type of fatty acid ester with a special structure of quaternary carbon atoms, also known as neopentyl structure. Typical examples are: pentaerythritol fatty acid ester, dipentaerythritol fatty acid ester, trimethylolpropane fatty acid ester Ester, ditrimethylolpropane fatty acid ester, neopentyl glycol fatty acid ester, they are favored by people. Because there is no hydrogen atom on the β carbon atom of the carbonyl of these neopentyl fatty acid esters, it cannot form a six-atom ring resonance structure with the carbon and hydrogen of the alcohol part of the ester group. Only high energy can destroy such an ester structure. , which makes the anti-oxidation and anti-elimination reaction stability of neopentyl polyol fatty acid ester ...

Claims

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Application Information

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IPC IPC(8): C07C67/08C07C69/58
CPCC07C67/08C07C69/58
Inventor 郑铁江薛建军曹圣平潘洁
Owner NANTONG BAICHUAN NEW MATERIAL CO LTD
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