Powder coating compositions

Details Powder coating compositions Powder coating compositions

C - Chemistry, Metallurgy

09

D

C09D 7/12 (2006.01) C09D 5/03 (2006.01)

Patent

CA 2337799

Powder coating compositions incorporate, by dry blending, a wax-coated silica additive in finely divided form. Further additives which may be incorporated by dry blending are aluminium oxide and/or aluminium hydroxide. The compositions offer advantages, for example, in terms of fluidity and in terms of improved first-time deposition of fine particles.

Compositions en poudre pour revêtement, dans lesquelles il est prévu d'incorporer, par mélange à sec par voie mécanique, un adjuvant de silice enrobé de cire, sous forme finement divisée. Comme autres adjuvants pouvant être incorporés par mélange à sec par voie mécanique, on mentionne l'oxyde d'aluminium et/ou l'hydroxyde d'aluminium. Les compositions sont avantageuses, par exemple, au point de vue fluidité et amélioration du dépôt, en couche de fond, des fines particules.

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