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Preparation process of neopentyl polyol oleate

A technology of neopentyl polyol and alcohol oleate, applied in the preparation of carboxylate, the preparation of organic compounds, organic chemistry, etc., can solve problems such as limited life, save high energy consumption, save water washing and phase separation , the effect of avoiding dangerous and harmful factors

Inactive Publication Date: 2015-09-30
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

[0044] A kind of preparation method of neopentyl polyol oleate adopts trimethylol propane and oleic acid as raw material, and concrete steps comprise:

[0045] Step S1: For the current batch of trimethylolpropane and oleic acid purchased, since the number of hydroxyl groups contained in one molecule of trimethylolpropane is 3, the theoretical molar ratio of oleic acid to trimethylolpropane is 3;

[0046] Step S2: Set the molar ratio of oleic acid to trimethylolpropane in this small test. According to the experience obtained from previous synthesis, the more suitable molar ratio of trimethylolpropane to oleic acid is 1.04:3;

[0047] Step S3: For a small test, first put a magnetic stirrer in a 500mL three-necked bottle, put in 0.9mol (254.223g) of oleic acid, then put in 0.312mol (41.861g) of trimethylolpropane accordingly, and turn on the oil bath The temperature rise switch of the heater is used to heat the materials in the kettle. When the temperature in the kettle rise...

Embodiment 2

[0057] A method for producing ditrimethylolpropane oleate, adopting ditrimethylolpropane and oleic acid as raw materials, the specific steps comprising:

[0058] Step S1: For the current batch of ditrimethylolpropane and oleic acid purchased, there are 4 hydroxyl groups in a ditrimethylolpropane molecule, and the theoretical molar ratio of oleic acid to ditrimethylolpropane is 4;

[0059] Step S2: Set the molar ratio of oleic acid to ditrimethylolpropane in this small test. According to the combination of experience and theoretical molar ratio obtained from previous synthesis, the more suitable molar ratio of ditrimethylolpropane to oleic acid is 1.05:4;

[0060] 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 tem...

Embodiment 3

[0070] A kind of preparation method of neopentyl polyol oleate adopts pentaerythritol and oleic acid as raw material, and concrete steps are as follows:

[0071] Step S1: For the current batch of pentaerythritol and oleic acid purchased, there are 4 hydroxyl groups in one pentaerythritol molecule, and the theoretical molar ratio of oleic acid to pentaerythritol is 4;

[0072] Step S2: Set the molar ratio of oleic acid to pentaerythritol in this small test. According to the experience obtained from previous synthesis, the more suitable molar ratio of pentaerythritol and oleic acid is 1.04:4;

[0073] Step S3: Conduct a small test. In a 500mL three-necked bottle, first put a magnetic stirrer, put in 0.8mol (225.976g) of oleic acid, and then put in 0.208mol (28.319g) of pentaerythritol accordingly, and turn on the temperature rise of the oil bath heater Switch on and off to heat the materials in the kettle. When the temperature in the kettle rises to 110°C, add 1% (2.54g) p-...

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Abstract

The invention relates to a preparation process of neopentyl polyol oleate. The preparation process comprises the following steps: by aiming at different batches of purchased neopentyl polyol and oleic acid, firstly determining a theoretical molar ratio required by a complete esterification reaction between neopentyl polyol and oleic acid according to the number of hydroxide radicals in molecules of utilized neopentyl polyol or mixed neopentyl polyol, or carrying out multiple small experiments according to a previous experience molar ratio of neopentyl polyol or mixed neopentyl polyol to oleic acid, ending the experiment when the acid value of a small experiment sample is less than or equal to 1.5mgKOH / g and synthetic liquid and water is well separated, and producing by taking the raw material batch and raw material ratio of the last small experiment as the raw material ratio for large-scale production. The preparation process has the advantages that the raw materials can be adequately utilized, and troubles in after-treatment of products are reduced.

Description

technical field [0001] The invention belongs to the field of organic chemical raw material production, in particular to a preparation process of neopentyl polyol 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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Patent Type & Authority Applications(China)
IPC IPC(8): C07C67/08C07C67/56C07C69/58
CPCC07C67/08C07C67/56C07C69/58
Inventor 郑铁江赵红伟薛建军潘洁
Owner NANTONG BAICHUAN NEW MATERIAL CO LTD
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