A - Human Necessities – 61 – K
Patent
A - Human Necessities
61
K
A61K 9/16 (2006.01) A61K 9/50 (2006.01) A61K 9/51 (2006.01) B01J 13/04 (2006.01) C08L 5/08 (2006.01)
Patent
CA 2325420
A method for the production of micro capsules by atomizing an aqueous solution (1) containing 0.1-5 wt. % of at least one water-soluble polyanion to form liquid droplets. The liquid droplets thus obtained impinge upon a liquid film of an aqueous solution (2), containing: 0.1-5 wt. % calcium cations, 0.001-0.4 wt. % chitosane with a molecular weight of more than 40,000 g/mol, and/or 0.1- 5 wt. % chitosane with a average molecular weight of 500-40,000 g/mol.
L'invention concerne un procédé de production de microcapsules par pulvérisation d'une solution aqueuse (1) qui contient 0,1 à 5 % en poids d'au moins un polyanion soluble dans l'eau, en gouttelettes liquides. Les gouttelettes de liquide ainsi obtenues frappent un film fluide d'une solution aqueuse (2) qui contient 0,1 à 5 % en poids de cations de calcium; 0,001 à 0,4 % en poids de chitosane ayant un poids moléculaire moyen supérieur à 40.000 g/mol; et/ou 0,1 à 5 % en poids de chitosane ayant un poids moléculaire moyen compris entre 500 et 40.000 g/mol.
Aventis Research & Technologies Gmbh & Co. Kg
Fetherstonhaugh & Co.
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