Method for the production of small spherical particles...

Details Method for the production of small spherical particles... Method for the production of small spherical particles...

C - Chemistry, Metallurgy

08

J

C08J 3/14 (2006.01) C08L 5/00 (2006.01)

Patent

CA 2340727

The present invention relates to a method for the production of small spherical particles consisting totally or partly of at least one water- insoluble linear polysaccharide by dissolving the at least one water-insoluble polysaccharide in a solvent or a solvent mixture, introducing the solution into a precipitating agent or a precipitating agent mixture, optionally cooling the mixture thus obtained and separating the formed small particles, wherein at least one poly alpha D-glucan soluble in hot water is used as auxiliary agent for precipitation. The invention also relates to the particles obtained according to said method.

L'invention concerne un procédé permettant de préparer de petites particules sphériques, consistant en totalité ou en partie en au moins un polysaccharide linéaire soluble dans l'eau, par dissolution dudit polysaccharide non soluble dans l'eau (au moins au nombre de un) dans un solvant ou dans un mélange de solvants, par introduction de la solution dans un agent de précipitation ou un mélange d'agents de précipitation, éventuellement par refroidissement du mélange qui en résulte et par séparation des petites particules formées. L'agent auxiliaire de précipitation utilisé est au moins un poly-alpha-D-glucane soluble dans l'eau chaude. L'invention concerne en outre des particules obtenues à l'aide dudit procédé.

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