Efficient synthesis of fatty monoglyceride sulfates from fatty acids and fatty acid methyl esters |
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Authors: | Fahim U Ahmed |
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Affiliation: | (1) Colgate-Palmolive Company, Corporate Technology Center, 909 River Road, 08854 Piscataway, New Jersey |
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Abstract: | An efficient high yield synthesis of fatty monoglyceride sulfates from fatty acids or fatty acid methyl esters, glycerine
and chlorosulfuric acid in chloroform using stoichiometric amounts of reagents was developed. Sodium coco monoglyceride sulfate
was prepared in 79% yield with 93% purity from coco fatty acids. Similarly, sodium palm kernel monoglyceride sulfate in 57%
yield and sodium palm monoglyceride sulfate in 71% yield were obtained from palm kernel fatty acid methyl esters and palm
fatty acids, respectively. This new synthetic method produced better quality products with higher active ingredients and improved
yields without having to use such cost prohibitive, high purity, fatty acid monoglycerides, and it reduced the undesirable
aqueous sodium sulfate by-product by 60% over a current commercial process. The product’s composition and purity were confirmed
by cationic titration, infrared and C-13 NMR spectroscopy. |
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