AN IMPROVED PROCESS FOR PRODUCING CHLORINATED SUCROSE

WIPO Patent Application WO2005090374

A8

Present invention relates to disclosure of application of some innovative techniques useful for substantially improving process efficiency of production of chlorinated sucrose including their intermediates and derivatives. Application of mild methods of drying has been made for recovery of chlorinated sucrose or their intermediates and derivatives, in substantially pure form or with other solid chemical impurities, obtained at various stages in the process of production of chlorinated sucrose. Mild methods of drying included agitated thin film drying, spray drying, freeze drying and super critical extraction. Use of alkoxides has been introduced for deacylation instead of alkali hydroxides or alkaline earth hydroxides. Deacylation has been shown to be effective both, either before or after drying of the reaction mixture. Extraction and purification of desired products i.e. of chlorinated sucrose or its intermediates or derivatives, from dried solid mixtures could be achieved by using appropriate extraction method, including but not limited to solvent extraction and super critical extraction. Further purification of such extracts can be done by crystallization or direct drying under mild conditions.

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RATNAM RAKESH (IN)
KULKARNI SHRIKANT (IN)
AURORA SUNEET (IN)

PCT/IN2004/000142

March 06, 2008

May 20, 2004

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PHARMED MEDICARE PVT LTD (IN)
RATNAM RAKESH (IN)
KULKARNI SHRIKANT (IN)
AURORA SUNEET (IN)

C07H1/06; A23L27/30; C07H5/02

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