Process for oxidation of carrier particles

Details Process for oxidation of carrier particles Process for oxidation of carrier particles

1982-07-06

1984-01-10

Morgenstern, Norman

Coating processes

Particles, flakes, or granules coated or encapsulated

Inorganic base

148 635, 427213, 427221, 427327, B05D 700

Patent

active

044253834

ABSTRACT:
This invention is directed to an improved process for treating steel carrier core surfaces which comprises providing a steel carrier core composition, oxidizing in the air stream the surface of the carrier core at a temperature of from about 500 degrees Fahrenheit to about 1,000 degrees Fahrenheit, adding water to the air stream prior to accomplishing the oxidation reaction, at a partial pressure of water in excess of 20 millimeters of mercury, thereby resulting in carrier cores having a resistance of from about 10.sup.5 ohm-cm to about 10.sup.12 ohm-cm.

REFERENCES:
patent: 2728696 (1955-12-01), Singer
patent: 3377213 (1968-04-01), Hiller
patent: 3617394 (1971-11-01), Mayer
patent: 3767477 (1973-10-01), McCabe et al.
patent: 3906125 (1975-09-01), Uher
patent: 3923503 (1975-12-01), Hagenbach
patent: 4035200 (1977-07-01), Valentijn
patent: 4158561 (1979-06-01), Pavlik et al.
patent: 4223085 (1980-09-01), Hagenbach et al.
patent: 4294628 (1981-10-01), Kasuya
patent: 4297150 (1981-10-01), Foster et al.

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