C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
C08L 5/00 (2006.01) C08J 3/14 (2006.01) C08L 3/12 (2006.01)
Patent
CA 2341904
The present invention relates to a method for preparing smooth-surface spherical microparticles which are completely or partially made of at least one water-insoluble linear polysaccharide. This method involves dissolving the at least one water-insoluble linear polysaccharide in a solvent or a mixture of solvents, introducing the solution into a precipitation agent or a mixture of precipitation agents, optionally cooling the mixture thus obtained, and separating the microparticles thus formed. The precipitation agent used consists of at least one water-soluble cellulose derivative. This invention also relates to microparticles obtained according to this method.
L'invention concerne un procédé permettant de préparer des microparticules sphériques à surface lisse, consistant en totalité ou en partie en au moins un polysaccharide linéaire non soluble dans l'eau, par dissolution dudit polysaccharide linéaire non soluble dans l'eau (au moins au nombre de un) dans un solvant ou 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 microparticules formées. L'agent de précipitation utilisé est au moins dérivé cellulosique soluble dans l'eau. L'invention concerne en outre des microparticules obtenues à l'aide dudit procédé.
Bengs Holger
Bohm Gitte
Brunner Anette
Grande Jurgen
Schneller Arnold
Axiva Gmbh
Bengs Holger
Bohm Gitte
Brunner Anette
Fetherstonhaugh & Co.
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