Process for the manufacture of (sub)micron sized particles...

A - Human Necessities – 61 – K

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

A61K 9/14 (2006.01) A61K 9/16 (2006.01) A61K 31/015 (2006.01) B01F 3/00 (2006.01) B01F 3/12 (2006.01) B01J 2/00 (2006.01) B01J 2/04 (2006.01) B01J 3/00 (2006.01) B01J 13/00 (2006.01) B01J 13/02 (2006.01) B29B 9/10 (2006.01) C08J 3/12 (2006.01)

Patent

CA 2326349

The present invention relates to a process for manufacturing a pulverous preparation of a (sub)micron-sized biologically active compound comprising the steps of: (1) dissolving a biologically active compound under elevated pressure in a compressed gas, liquid or supercritical fluid containing a surface modifier; or in compressed dimethylether optionally containing a surface modifier; (2a) rapidly expanding the compressed solution of step (1) thereby precipitating the dissolved compound; or (2b) spraying the compressed solution of step (1) into an antisolvant phase optionally containing a surface modifier under vacuum, atmospheric pressure or elevated pressure; and (3) optionally converting the antisolvant phase of step (2b) into a pulverous preparation using conventional powder processing techniques. With the process according to the present invention formation of aggregations or flocculations of particles dissolved in the supercritical solution is prevented; moreover, the addition of cosolvents is not required, thus increasing the stabilisation of the suspension on an industrial scale.

La présente invention a trait à un procédé de production d'une préparation pulvérulente d'un composé biologiquement actif submicronique comprenant les étapes consistant (1) à dissoudre un composé biologiquement actif sous une pression élevée dans un gaz comprimé, un liquide ou un fluide supercritique contenant un modificateur de surface; ou dans un diméthyléther comprimé contenant facultativement un modificateur de surface; (2a) à dilater rapidement la solution dilatée de l'étape (1) précipitant ainsi le composé dissous; ou (2b) à pulvériser la solution comprimée de l'étape (1) dans une phase antisolvant contenant facultativement un modificateur de surface sous une pression vacuométrique, atmosphérique ou sous une pression élevée; et (3) à convertir facultativement la phase antisolvant de l'étape (2b) en une préparation pulvérulente à l'aide de techniques classiques de traitement des poudres. Le procédé de l'invention permet d'empêcher la formation d'agrégations ou de floculations de particules dissoutes dans la solution supercritique, de plus, l'addition de cosolvants n'est pas nécessaire, augmentant ainsi la stabilisation de la suspension à l'échelle industrielle.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Process for the manufacture of (sub)micron sized particles... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for the manufacture of (sub)micron sized particles..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the manufacture of (sub)micron sized particles... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1912813

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.