Thermosettable powder paints containing encapsulated...

Details Thermosettable powder paints containing encapsulated... Thermosettable powder paints containing encapsulated...

C - Chemistry, Metallurgy

09

D

400/5108

C09D 5/38 (2006.01)

Patent

CA 1065082

ABSTRACT OF THE DISCLOSURE Improved powder paint compositions providing greater depth variation of metal pigment particles com- prise (1) aluminum flakes individually encapsulated in a thin, continuous, thermosettable, organic film-former containing an ammonium salt selected from tetraalkyl ammonium halides and substituted tetraalkylammonium halides wherein at least one alkyl radical is replaced with an aryl, phenoxy or alkoxy radical and (2) a par- ticulate, organic film-former. The encapsulated alumi- num flakes are prepared by intimately dispersing the aluminum flakes in a solution of the thermosettable, organic film-former and the ammonium salt in a volatile solvent and spray drying the resultant dispersion. In the preferred embodiment, the particulate, organic film- former is also a thermosettable material and, in the most preferred embodiment, it is also crosslinkable with the thermosettable coating on the aluminum flakes.

214260

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