Process of preparing polymer-coated powder particles

Details Process of preparing polymer-coated powder particles Process of preparing polymer-coated powder particles

1974-08-15

1976-07-13

Gwinnell, Harry J.

Coating processes

Particles, flakes, or granules coated or encapsulated

Applying superposed diverse coatings or coating a coated base

427216, 427221, 427215, 427299, 427327, B05D 700, B05D 300

Patent

active

039695476

ABSTRACT:
Organic or inorganic particulate solid substances are coated with a polymeric material by dispersing the particulate solids, the surfaces of which have been treated so as to be compatible with the polymer coating, in a solution containing the polymer dissolved in a water-immiscible solvent, slowly introducing into the dispersion an aqueous solution of a hydrophilic protective colloid, thus producing an emulsifying liquid medium, and removing therefrom the solvent, to finally obtain polymer coated solid particles. The polymer-coated powder thus obtained is useful for application to various substrates by fluidized bed coating, electrostatic spraying, or electrophoretic deposition, followed by sintering to form films.

REFERENCES:
patent: 2601212 (1952-06-01), Polydoroff
patent: 3386851 (1968-06-01), Harlan
patent: 3565559 (1971-02-01), Sato et al.
patent: 3657144 (1972-04-01), Yoshida
patent: 3660304 (1972-05-01), Matsukawa
patent: 3661620 (1972-05-01), Dekking et al.
patent: 3664963 (1972-05-01), Pasin
patent: 3691090 (1972-09-01), Kitajima
patent: 3703474 (1972-11-01), Haber
patent: 3737337 (1973-06-01), Schnoring et al.
patent: 3780195 (1973-12-01), Balassa

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