A kind of sodium isethionate ellipsoidal crystal and preparation method thereof

A sodium isethionate, ellipsoid technology, applied in chemical instruments and methods, preparation of organic compounds, organic chemistry, etc., can solve problems such as uneven distribution, poor formulation performance, and small particle size
CN109694337BActive Publication Date: 2022-04-22WANHUA CHEM GRP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
WANHUA CHEM GRP CO LTD
Publication Date
2022-04-22

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Abstract

The invention discloses a sodium isethionate ellipsoidal crystal and a preparation method thereof. Add the crude sodium isethionate into water to make a suspension with a certain concentration, then add a certain proportion of gallic acid as an additive, raise the temperature to 80-100°C, and stir to dissolve the system. The sodium isethionate solution was evaporated and concentrated to a certain extent by means of programmed decompression. Then grow the crystal for a period of time, and then lower the temperature of the system to 10-25°C by means of program temperature control. After centrifugation, washing and drying, ellipsoidal sodium isethionate crystals can be obtained. The main particle size of the ellipsoidal crystal is 500 μm-700 μm, and the bulk density is 1.10 g / mL-1.30 g / mL. The method has high production efficiency, simple technological process and easy industrialization.
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Description

technical field

[0001] The invention relates to the technical field of chemical and pharmaceutical crystallization, in particular to a sodium isethionate ellipsoidal crystal and a preparation method thereof. Background technique

[0002] Taurine, a natural and pure β-sulfonated amino acid, is a sulfur-containing amino acid necessary for human and mammalian body activities. Although it does not directly participate in the synthesis of proteins and enzymes in the body, it is widely used in the food and pharmaceutical industries because of its important physiological functions such as treating fatty liver, relieving heart failure, and eliminating fatigue.

[0003] The synthetic methods of taurine mainly include ethanolamine method and ethylene oxide method. Among them, the ethanolamine method is gradually eliminated due to long reaction cycle, low conversion rate and high cost. The ethylene oxide method has a high conversion rate and convenient continuous production, and has ...

Claims

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