摘要 |
The invention relates to microparticles having a uniform spherical shape and showing a very narrow dimensional distribution. These microparticles are fully or partly composed of a linear water insoluble polysaccharide, preferably 1,4- alpha -D-polyglucan, and they can contain other, preferably biodegradable, polymers and/or active ingredients. They can, inter alia, be used for the controlled release of active ingredients. The are produced by dissolving the 1,4- alpha -D-polyglucan or said polysaccharide in a solvent, mixing the solution with a precipitating agent, cooling the mixture and separating the formed particles.
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申请人 |
HOECHST AG, 65929 FRANKFURT, DE |
发明人 |
BENGS, HOLGER, DR., 60598 FRANKFURT, DE;GRANDE, JUERGEN, 65812 BAD SODEN, DE;SCHNELLER, ARNOLD, DR., 64409 MESSEL, DE;BOEHM, GITTE, 60439 FRANKFURT, DE |