Fluidization additives to fine powders

C - Chemistry – Metallurgy – 08 – J

Patent

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Details

C08J 3/12 (2006.01) B01J 8/38 (2006.01) C09C 3/04 (2006.01) C09D 5/03 (2006.01)

Patent

CA 2492129

The present invention provides powder fluidization additives for increasing flowability of fine powders. The powder fluidization additives have both a smaller size than the fine powder and a mean apparent particle density less than the mean apparent particle density of the fine powder. The particles of the additive act to separate the fine powder particles and reduce interparticle forces allowing the flowability of the fine powder to be increased. The powder formulations to which the fluidization additives may be added may be for any powder formulation including paint powder formulations or pharmaceutical powder formulations.

La présente invention concerne des additifs de fluidisation en poudre destinés à augmenter l'aptitude à l'écoulement de poudres fines. Ces additifs de fluidisation en poudre présentent une taille inférieure à celle de la poudre fine et une densité apparente moyenne des particules inférieure à celle de la poudre fine. Les particules de l'additif agissent de façon à séparer les particules de poudre fine et à réduire les forces interparticulaires, ce qui permet d'augmenter l'aptitude à l'écoulement de la poudre fine. Les préparations en poudre auxquelles ces additifs de fluidisation sont ajoutés peuvent se présenter sous la forme de préparations quelconques, telles que des préparations pour peinture en poudre ou des préparations pharmaceutiques en poudre.

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