Self-adhering powder paint based on polyamide and silane for...

Details Self-adhering powder paint based on polyamide and silane for... Self-adhering powder paint based on polyamide and silane for...

2006-12-26

2006-12-26

Niland, Patrick D. (Department: 1714)

Stock material or miscellaneous articles

Composite

Of metal

C427S458000, C427S459000, C427S461000, C427S472000, C427S473000, C427S474000, C427S475000, C427S485000, C427S486000, C428S457000, C524S188000

Reexamination Certificate

active

07153585

ABSTRACT:
The invention concerns to the use of a powder comprising 99.95 to 95% of at least one polyamide and 0.05 to 5% of at least one silane for coating metals. This powder may be prepared by simple dry blending of the constituents. The silane can also be added to the molten polyamide in a mixing device and the resulting product reduced to powder. The addition of silane makes it possible to significantly improve electrostatic application by preventing a substantial portion of the powder from falling off during the electrostatic discharge which follows application, while providing lasting adhesion between the coating and metal. Advantageously, the silane is chosen from aminopropyltriethoxysilane and aminopropyltrimethoxysilane. The invention also concerns a method of coating an object with a film resulting from melting a thin layer of the powder.

REFERENCES:
patent: 4180442 (1979-12-01), Byrd
patent: 5409999 (1995-04-01), Merval et al.
patent: 6011100 (2000-01-01), Douals et al.
patent: 6027814 (2000-02-01), Julien et al.
patent: 0969053 (2000-01-01), None
patent: 1478484 (1973-08-01), None
patent: 1508587 (1975-03-01), None

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