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Preparation method of sodium hydroxyethyl sulfonate fatty acid ester

A technology of sodium isethionate and fatty acid ester, which is applied in the fields of sulfonate preparation and organic chemistry, can solve problems such as unsatisfactory foaming performance, unfavorable addition of cleansing powder, and easy blockage of powder feeders, etc., to achieve Strong foaming and hard water resistance, less environmental pollution, and abundant raw material sources

Active Publication Date: 2014-01-01
JILIN AEGIS CHEM
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Problems solved by technology

[0004] The applicant found in practice that the foaming performance of SCI-75 produced by the above-mentioned inventive method is not ideal in liquid washing. At the same time, the SCI-75 product is not easy to be crushed, and it is sticky when powdered, and it is easy to block the powder machine, so it is not suitable to be added to cleansing powder middle

Method used

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  • Preparation method of sodium hydroxyethyl sulfonate fatty acid ester
  • Preparation method of sodium hydroxyethyl sulfonate fatty acid ester
  • Preparation method of sodium hydroxyethyl sulfonate fatty acid ester

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Embodiment

[0027] Weigh the raw materials according to the ratio, sodium isethionate aqueous solution: 614.5kg, coconut oleic acid: 700kg melted in advance, zinc oxide: 2.0kg, put into the reaction kettle in sequence and heat up to 100-160°C for 90 minutes, then heat up to 221°C Start the esterification reaction, the reaction temperature is 240±2°C, the reaction time is maintained for 90 minutes, and then the reaction temperature is raised to 245°C, the total reaction time is 120 minutes, the fatty acid distilled during the esterification is refluxed into the reactor through condensation, and the esterification After the reaction, the vacuuming operation is started, and the vacuuming needs to be carried out slowly to control the foaming on the surface of the material to be stable and uniform. During the vacuuming period, the reactor should not be lower than 232°C. After vacuuming for 1.5 hours, the reactor pressure was -0.095MPa. Continue vacuuming for 3.5 hours. There is no foam on the s...

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Abstract

The invention relates to a preparation method for synthesizing esters from fatty acid and sodium hydroxyethyl sulfonate and particularly relates to a preparation method of sodium hydroxyethyl sulfonate fatty acid ester. According to the method, a finished product of sodium hydroxyethyl sulfonate fatty acid ester is prepared by adopting coconut oil acid, sodium hydroxyethyl sulfonate and zinc oxide as raw materials through performing preparation of the raw materials, esterification reaction, vacuum-pumping operation and other process steps. The preparation method provided by the invention has the advantages of simple process, rich sources of the raw materials, reproducibility, very low environmental pollution of a production process and no other wastes and byproducts, and is suitable for industrial mass production. The product is easy to be crushed into powder with the particle size of 200 meshes through a crushing machine and can be added into face washing powder, and experiments prove that the product has strong foamability and hard water resistance.

Description

technical field [0001] The invention relates to a preparation method for synthesizing esters with fatty acid and sodium isethionate, in particular to a preparation method for sodium isethionate fatty acid ester. Background technique [0002] Sodium isethionate fatty acid ester (SCI), also known as sodium cocoyl isethionate, is a very mild anionic surfactant, mainly used as skin care block detergent, liquid bath Additives for cosmetics and cleansing powder. Its rich and delicate foam can thoroughly remove dirt and excess oil, and adjust the pH value of the skin. It has good moisturizing and fat-rich properties, makes the skin healthy and breathes freely, and completely restores the freshness and transparency of the skin. [0003] At present, only Jilin Yijiesi Chemical Co., Ltd. (applicant company) applied for an invention patent on January 13, 2011, named: Preparation method of sodium isethionate fatty acid ester, and on April 3, 2013 Authorized announcement, patent numbe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C309/12C07C303/32
Inventor 蒋涛黄东关宇虹于万娟姚振国张旗苏建国张东健吴巍
Owner JILIN AEGIS CHEM
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