C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 51/42 (2006.01) C07C 51/43 (2006.01) C07C 51/47 (2006.01) C07C 55/14 (2006.01)
Patent
CA 2377179
The invention concerns a method for making adipic acid, more particularly adipic acid crystals. More precisely, it concerns a method for treating adipic acid crystals derived from crystallisation which consists in dispersing the adipic acid crystals collected at the output of crystallisation in a liquid medium, stirring said liquid medium, then separating said crystals and optionally drying them. The shape of the crystals is modified to obtain pebbles with substantially smooth surface.
La présente invention concerne un procédé de fabrication d'acide adipique, plus particulièrement de cristaux d'acide adipique. Elle est relative plus concrètement à un procédé de traitement des cristaux d'acide adipique obtenus en sortie de cristallisation consistant à disperser les cristaux d'acide adipique recueillis en sortie de cristallisation dans un milieu liquide, en agitant ledit milieu liquide puis à séparer lesdits cristaux dudit milieu liquide et éventuellement les sécher. La forme des cristaux est modifiée pour obtenir des galets de surface sensiblement lisse.
Felix Albert
Roques Yves
Rhodia Polyamide Intermediates
Robic
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