Mat-finish compositions for coating substrates

C - Chemistry – Metallurgy – 09 – D

Patent

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C09D 7/12 (2006.01) C09D 5/03 (2006.01) C09D 5/46 (2006.01)

Patent

CA 2191892

Mat-finish compositions for coating substrates, comprising thermoplastic or thermosetting resins such as polyamide, polypropylene, polyesters, epoxy resins and containing one or more matting agents maily in the form of needles or pellets having an average length of 1-200 µm and an aspect ratio of 10- 40. Said compositions, which are generally in the form of powders, are suitable for coating various substrates. The coatings are deposited, in particular, by fluid bed dipping and by electrostatic projection. The coated pieces can be furnishing, decorative or construction elements.

L'invention concerne des compositions pour le revêtement de substrats d'aspect de surface mat à base de résines thermoplastiques et/ou thermodurcissables telles que PA, PP, polyesters, résines époxydes et contenant un ou plusieurs agents matants se présentant majoritairement sous forme d'aiguilles ou paillettes de longueur moyenne comprise entre 1 et 200 µm et de rapport de forme compris entre 10 et 40. Ces compositions en général sous forme de poudres sont utilisées pour le revêtement de substrats divers. Les revêtements sont appliqués notamment par trempage en lit fluidisé, par projection électrostatique. Les pièces revêtues peuvent être des éléments d'ameublement, de décoration ou de construction.

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