METHOD FOR PREPARING SPHERICAL MICROPARTICLES WHICH HAVE A SMOOTH SURFACE AND CONSIST ENTIRELY OR PARTLY OF AT LEAST ONE WATER-INSOLUBLE LINEAR POLYSACCHARIDE AND MICROPARTICLES OBTAINABLE BY SAID METHOD

摘要

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.