B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
B01J 13/06 (2006.01) B01J 20/24 (2006.01) B01J 20/30 (2006.01) B01D 15/08 (2006.01)
Patent
CA 2750815
The present invention relates to a method for the preparation of polymer shells, preferably composed of cellulose or hemicellulose, comprising the steps of dissolving the polymer component in a first solvent, preferably an organic solvent and precipitating the polymer component by contacting the first solution with a second solvent, which second solvent has a polar character, and in which second solvent the polymer component is essentially insoluble, thereby obtaining polymer shells. Moreover, the invention refers to the polymer shells as such, having permeable and responsive properties, as well as various applications comprising such polymer shells within the fields of drug delivery, separation techniques, and inter alia filling material.
La présente invention concerne un procédé de préparation de coques polymères, de préférence composées de cellulose ou d'hémicellulose. Ledit procédé comprend la dissolution du composant polymère dans un premier solvant, de préférence un solvant organique, et la précipitation dudit composant polymère par mise en contact de la première solution avec un second solvant - ledit second solvant possédant un caractère polaire, et le composant de polymère étant sensiblement insoluble dans ledit second solvant -, afin d'obtenir des coques polymères. En outre, l'invention porte sur les coques polymères en tant que telles, qui possèdent des propriétés de perméabilité et de réaction. L'invention a également trait à diverses applications comprenant de telles coques polymères dans les domaines de l'administration de médicament, à des techniques de séparation, et notamment à un matériau de remplissage.
Carrick Christofher
Pettersson Bert
Ruda Marcus
Vagberg Lars
Smart & Biggar
Swetree Technologies Ab
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