Process for the crystallisation of sterically hindered...

Details Process for the crystallisation of sterically hindered... Process for the crystallisation of sterically hindered...

C - Chemistry, Metallurgy

07

B

C07B 63/00 (2006.01) C07C 231/24 (2006.01) C07C 237/46 (2006.01)

Patent

CA 2305569

A process for the crystallisation of a sterically hindered organic compound from a saturated or supersaturated solution of said compound in a solvent therefor, characterised in that crystallisation is effected under elevated pressure at a temperature above the boiling point of said solution at atmospheric pressure an up to the boiling point of said solution at said elevated pressure.

L'invention concerne un procédé de cristallisation d'un composé organique stériquement encombré à partir d'une solution saturée ou sursaturée dudit composé dans un de ses solvants. Ce procédé se caractérise par le fait que la cristallisation se fait à une pression élevée, à une température qui est supérieure au point d'ébullition de cette solution à la pression atmosphérique et qui peut atteindre son point d'ébullition à ladite pression élevée.

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