Method for synthesizing isooctanoic acid hexadecyl ester

A synthesis method and isooctanoic acid technology are applied in the preparation of carboxylate, chemical instruments and methods, preparation of organic compounds, etc., can solve the problems of rancidity and oxidation, easy hydrolysis of ester bonds, short shelf life, etc. The effect of mild reaction conditions and low cost

Active Publication Date: 2009-07-22
广州星业科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the general-purpose oils and fats for cosmetics are all straight-chain e...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Take 200g of isooctanoic acid, 100g of cetyl alcohol, 0.3g of sulfuric acid and 0.2g of sulfurous acid, put them into a three-necked flask, connect a condenser, heat in an oil bath, and after the temperature of the material rises to 120°C, adjust the vacuum degree to -0.010Mpa to evacuate. Insulate and react for 1 hour, adjust the temperature to 160°C, deacidify at a vacuum of -0.01Mpa, cool down to 50°C, add sodium hydroxide to neutralize, and make the amount of 0.05% of the total weight of isooctanoic acid and cetyl alcohol ~2%, adjust the temperature to 10°C, add 300g and 50g of water to wash twice, adjust the temperature to 60°C, and vacuum to -0.01Mpa for vacuum dehydration to obtain the cetyl isooctanoate product.

Embodiment 2

[0027] Take 200g of isooctanoic acid, 150g of cetyl alcohol, 1.5g of p-benzenesulfonic acid and 3.6g of sodium phosphite, put them into a three-necked flask, connect a condenser, heat in an oil bath, and after the temperature of the material rises to 130°C, adjust the vacuum degree to -0.030 Vacuum at Mpa, heat preservation reaction for 5 hours, adjust the temperature to 190°C, after deacidification when the vacuum degree is -0.098Mpa, cool down to 80°C, neutralize with potassium hydroxide, and make the amount of isooctanoic acid and cetyl alcohol 0.05-2% of the total weight, adjust the temperature to 80°C, add 90g of water to wash twice, adjust the temperature to 120°C, and vacuum to -0.098Mpa for vacuum dehydration to obtain hexadecyl isooctanoate product.

Embodiment 3

[0029] Take 200g of isooctanoic acid, 160g of cetyl alcohol, 1.5g of sulfuric acid and 3.6g of sodium phosphite, put them into a three-necked bottle, connect a condenser, heat in an oil bath, and after the temperature of the material rises to 140°C, adjust the vacuum degree to -0.030Mpa to vacuumize , heat preservation reaction for 6 hours, adjust the temperature to 190°C, after deacidification at a vacuum degree of -0.098Mpa, cool down to 80°C, add ethanolamine to neutralize, and make the amount of isocaprylic acid and cetyl alcohol 0.05~ 2%, adjust the temperature to 80°C, add 90g of water to wash twice, adjust the temperature to 120°C, and vacuum to -0.098Mpa for vacuum dehydration to obtain the hexadecyl isooctanoate product.

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Abstract

The invention discloses a synthesis method of cetyl iso-octoate, which comprises the following steps: according to the fact that the weight by parts of isocaprylic acid and cetanol is between 1 to 0.5 and 1 to 2, isocaprylic acid and cetanol are added into a reaction kettle and added with a catalyst and a color fixative; the temperature is adjusted to between 120 DEG C and 200 DEG C; under a vacuumizing condition, the reaction is carried out for 1h to 6h; and then the cetyl iso-octoate is obtained through vacuum deacidification, neutralization, water washing and vacuum dehydration. The synthesis method is simple and easy, and has low cost, mild reaction condition and high product yield; the cetyl iso-octoate prepared has no color or odor, is transparent, has good air permeability, spreadability and dispersity and can be stored for a long term.

Description

technical field [0001] The invention belongs to the technical field of synthesis of ester compounds, and in particular relates to a synthesis method of hexadecyl isooctanoate. Background technique [0002] At present, the general-purpose oils and fats for cosmetics are all straight-chain esters, and the ester bonds are easy to hydrolyze, rancid and oxidize, and the shelf life is short. In order to solve this problem, the inventors have modified the molecular structure many times and found that adding a branch beside the carboxyl group can shield the ester bond and stabilize the ester bond. Based on this assumption, the present inventors synthesized hexadecyl isooctanoate, which has a branched chain beside the carboxyl group. [0003] Hexadecyl isooctanoate, commonly known as seabird feather oil, is a high-efficiency waterproof and excellent emollient, which can be miscible with almost all cosmetic oils; and has good air permeability, spreadability, dispersibility and moistu...

Claims

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Application Information

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IPC IPC(8): C07C69/24C07C67/08
Inventor 李建国孟巨光
Owner 广州星业科技股份有限公司
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