C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
C09D 5/46 (2006.01) C09D 7/12 (2006.01) C09D 133/10 (2006.01) C09D 139/06 (2006.01) A61K 9/28 (2006.01)
Patent
CA 2397799
This invention concerns a powder material suitable for electrostatic application to a substrate and a method of electrostatically applying said powder material to a substrate. At least some of the particles which constitute the powder material comprise a core and a shell surrounding the core. The shell and core generally have differing compositions and have different chemical and/or physical properties. Components which are likely to be altered can be placed in the core whilst maintaining the shell composition, thus allowing changes in formulation of the powder material without destroying the performance of the material in electrostatic application. The powder material is especially suitable for electrostatic application to pharmaceutical solid dosage forms.
L'invention concerne un matériau en poudre approprié à une application électrostatique sur un substrat et un procédé correspondant. Au moins certaines particules du matériau comprennent un coeur et une coque périphérique ayant généralement des compositions différentes et des propriétés chimiques et/ou physiques différentes. Les éléments susceptibles d'être modifiés peuvent être placés dans le coeur sans modification de la composition de la coque, ce qui permet de modifier la formulation du matériau en poudre sans perdre la performance en application électrostatique. Le matériau est particulièrement approprié à ce type d'application sur des formes posologiques pharmaceutiques solides.
Martin Trevor Ian
Reeves Linda Ann
Borden Ladner Gervais Llp
Phoqus Limited
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