Supercharge Your Innovation With Domain-Expert AI Agents!

Preparation method of sodium cocoyl isethionate

A technology of sodium cocoyl isethionate and sodium isethionate, applied in the field of fine chemical synthesis, can solve problems such as increased yield, reduced reaction temperature, poor mass transfer effect, etc., and achieves short reaction time , the reaction temperature is low, the effect of accelerating mass transfer

Active Publication Date: 2020-11-27
WANHUA CHEM GRP CO LTD
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method solves the problems of high viscosity and poor mass transfer effect in the later stage of the esterification reaction, thereby greatly shortening the reaction time, reducing the reaction temperature, and significantly increasing the yield

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Add 498.6g of choline chloride in the beaker, then dropwise add 1000g of pentafluoroethanesulfonic acid in the beaker, keep stirring during the dropwise addition, and stir until completely dissolved at room temperature to obtain the choline chloride-pentafluoroethanesulfonic acid of the proportioning ratio. Fluoroethanesulfonic acid deep eutectic solvent.

[0027] Add coconut oil 950.0g in the reactor, add sodium glycolate 500.0g, then add choline chloride-pentafluoroethanesulfonic acid deep eutectic solvent 1425.0g, start stirring, after nitrogen replacement three times, keep nitrogen blowing , raise the temperature to 140°C, and time the reaction for 110 minutes; after the reaction is completed, cool to room temperature, add 3990.0g of absolute ethanol to the reactor twice to wash and extract the product and raw materials, and extract the raw materials from the product through positive pressure filtration After the absolute ethanol is separated, the final product yiel...

Embodiment 2

[0029] Add 380.7g of choline chloride in the beaker, then dropwise add 600.0g of trifluoroethanesulfonic acid in the beaker, keep stirring during the dropping process, stir at room temperature until completely dissolved, and obtain the choline chloride of the proportioning- Trifluoroethanesulfonic acid deep eutectic solvent.

[0030] Add coconut oil 750.0g in the reactor, add sodium glycolate 500.0g, then add choline chloride-trifluoroethanesulfonic acid deep eutectic solvent 750.0g, start stirring, after nitrogen replacement three times, keep nitrogen blowing , raise the temperature to 100°C, and time the reaction for 60 minutes; after the reaction is completed, cool to room temperature, add 3750.0g of absolute ethanol to the reactor twice to wash and extract the product and raw materials, and extract the raw materials from the product through positive pressure filtration After the absolute ethanol is separated, the final product yield is 84.0%.

Embodiment 3

[0032] Add 698.0 g of choline chloride to the beaker, then add 1600.0 g of pentafluoroethanesulfonic acid dropwise to the beaker, keep stirring during the dropwise addition, and stir until completely dissolved at room temperature to obtain the choline chloride of the proportioning- Pentafluoroethanesulfonic acid deep eutectic solvent.

[0033] In the reactor, add 1100.0 g of cocoic acid, add 500.0 g of sodium glycolate, then add 2200.0 g of choline chloride-pentafluoroethanesulfonic acid deep eutectic solvent, start stirring, and replace nitrogen three times, keep nitrogen Advocate, raise the temperature to 180°C, and time the reaction for 150 minutes; after the reaction is completed, cool to room temperature, add 4400.0g of absolute ethanol to the reactor twice to wash and extract the product and raw materials, and extract the product through positive pressure filtration The anhydrous ethanol after the raw material is separated, and the yield of the final product is 84.0%.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a preparation method of sodium cocoyl isethionate. The preparation method solves the problems of high viscosity, difficulty in mass transfer, low yield and the like in the laterperiod of an esterification reaction in the process of directly synthesizing sodium cocoyl isethionate from coconut oil acid and sodium hydroxyethyl sulfonate in the prior art. According to the method in the invention, cocinic acid and sodium isethionate are used as raw materials, and a choline chloride / fluorine-containing ethanesulfonic acid eutectic solvent with a catalytic function and a solvent effect is added.

Description

technical field [0001] The invention belongs to the field of fine chemical synthesis, and in particular relates to a preparation method of sodium cocoyl isethionate. Background technique [0002] Sodium Cocoyl Isethionate (SCI) is a mild, foaming and excellent foam stabilizing anionic surfactant. SCI has excellent hard water resistance, extremely low toxicity and good biodegradability. It is mainly used in the production of personal care products, such as soap, shower gel, facial cleanser, foam cleanser and bath liquid. [0003] The synthetic method of Sodium Cocoyl Isethionate has two kinds at present, and a kind of is the method that is raw material with acyl chloride, and this method temperature of reaction is low, and product active content is high, but there is complex process and the difficult problem of three wastes; A kind of method is to be with the method for direct reaction of coconut oleic acid and sodium isethionate, although this method raw material is easy to...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C07C303/32C07C309/12
CPCC07C303/32C07C309/12
Inventor 蔺海政桂振友郭斌孔令晓丰茂英付广权陈来中张永振
Owner WANHUA CHEM GRP CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com