Coating or surface treatment of solid particles by means of a pl

Details Coating or surface treatment of solid particles by means of a pl Coating or surface treatment of solid particles by means of a pl

1994-11-29

1997-04-15

Beck, Shrive

Coating processes

Particles, flakes, or granules coated or encapsulated

Solid encapsulation process utilizing an emulsion or...

427459, 427460, 427488, 427489, 427576, 427578, 427562, B05D 700

Patent

active

056207433

ABSTRACT:
Solid particles are coated in a fluidized bed by application of a gaseous coating agent from a plasma, wherein the plasma is generated outside the fluidized bed under 0.01-500 mbar, and the plasma-activated gas is passed into the fluidized bed, which is operated under 0.1-500 mbar, where
a. the plasma is generated from the total amount of gaseous coating agent with or without another gas, or
b. the plasma is generated from a portion of the gaseous coating agent with or without another gas, and the remaining portion is introduced directly into the fluidized bed, or
c. the plasma is generated from another gas, and the total amount of gaseous coating agent is introduced directly into the fluidized bed.

REFERENCES:
patent: 4685419 (1987-08-01), Nakajima
patent: 4810524 (1989-03-01), Nakayama
patent: 4948485 (1990-08-01), Wallsten et al.
Derwent Accession, No. 75-203 91W (English abstract of SU-A 419 368) no date.
Derwent Accession, No. 95-012 086 (English abstract of JP-A 06 299 146) no date.
Journal De Physique IV, Colloque C1 (1991) Development of a Plasma Jetting . . . 429-438 no month.

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