Powder paints having aluminum flakes encapsulated in thermosetta

Details Powder paints having aluminum flakes encapsulated in thermosetta Powder paints having aluminum flakes encapsulated in thermosetta

1974-09-16

1976-01-13

Derrington, James H.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 40R, 260 4216, 260 4222, 260 4226, 260 4227, 260 4228, 260 4229, 260 4255, 260836, 260837R, 260856, 260901, 427195, C08K 308, C08K 904, C08K 910

Patent

active

039323480

ABSTRACT:
Improved powder paint compositions providing greater depth variation of metal pigment particles comprise (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 particulate, organic film-former. The encapsulated aluminum 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.

REFERENCES:
patent: 3532530 (1970-10-01), Denison et al.
patent: 3532662 (1970-10-01), Ansdell
patent: 3575900 (1971-04-01), Ponyik
patent: 3692731 (1972-09-01), McAdow
patent: 3730930 (1973-05-01), Labana
patent: 3781379 (1973-12-01), Theodore

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