Preparation method of 3-(1-ethylpropoxy)propionic acid-1-ethylpropyl ester

A technology of ethyl propoxy and ethyl propyl ester, applied in the preparation of carboxylate, the preparation of organic compounds, chemical instruments and methods, etc., can solve the problem of low gloss, poor leveling performance, and unsatisfactory requirements And other issues
CN109734597AInactive Publication Date: 2019-05-10SHAOGUAN HEZHONG CHEM CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHAOGUAN HEZHONG CHEM CO LTD
Publication Date
2019-05-10
Estimated Expiration
Not applicable · inactive patent
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Abstract

The invention relates to a preparation method of 3-(1-ethylpropoxy) propionic acid-1-ethylpropyl ester, which includes the following steps: firstly, adding acrylic acid 1-ethylpropyl propyl ester and1-ethylpropanol, heating to the required reaction temperature, dropping catalyst solution, reacting to the required conversion of 3-(1-ethylpropoxy) propionic acid-1-ethylpropyl ester, cooling, and adding acid substance to neutralize, removing 1-ethyl propanol until the concentration meets the requirement by vacuum distillation, cooling and adding alkaline aqueous solution to neutralize to neutral, standing, stratifying, separating water layer, heating and removing light components until distillate meets the requirements by vacuum distillation, and finally collecting products. In the preparation process of 3-(1-ethylpropoxy)propionic acid-1-ethylpropyl ester, suitable reaction temperature, catalyst and droplet acceleration, distillation vacuum and temperature are selected, and thus, the best yield of the product is achieved.
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Description

technical field

[0001] The invention relates to a preparation method of 1-ethylpropyl 3-(1-ethylpropoxy)propionate, which belongs to the technical field of organic solvent synthesis. technical background

[0002] At present, the solvents with high boiling point on the market include propylene carbonate and ethylene carbonate, both of which have a boiling point of more than 240 degrees, but they are polar solvents, which have poor solubility for many high-temperature resins, paints, inks, ceramic materials, etc. When the amount added is small, the viscosity of the paint and the viscosity of the ceramic raw material cannot be well reduced, and a large amount must be added to meet the viscosity requirement. The market needs some high-boiling point solvents that are not too polar and have good solubility. Therefore, a less toxic solvent, 3-(1-ethylpropoxy) propionate-1-ethylpropyl ester, has been developed. Its boiling point is higher than that of propylene carbonate and ethylen...

Claims

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