Process for the production of aluminium hydroxide of...

Details Process for the production of aluminium hydroxide of... Process for the production of aluminium hydroxide of...

C - Chemistry, Metallurgy

01

F

C01F 7/14 (2006.01) C08K 3/22 (2006.01)

Patent

CA 2396968

Aluminium hydroxide of improved thermal stability is produced by spray-drying of an aqueous slurry of aluminium hydroxide at 400 to 600 ~C drying gas temperature. The resulting aluminium hydroxide is suitable as a flame retardant filler in polymeric systems with high processing temperatures. It has a low specific surface area and good rheological properties.

Selon la présente invention, on produit un hydroxyde d'aluminium à stabilité thermique améliorée en séchant par atomisation une bouillie aqueuse d'hydroxyde d'aluminium à une température de gaz de séchage comprise entre 400 et 600 ·C. L'hydroxyde d'aluminium obtenu, qui possède une faible surface active spécifique et de bonnes propriétés rhéologiques, peut être utilisé comme charge ignifugeante dans des systèmes polymères à hautes températures de traitement.

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