Process for producing dispersions

Details Process for producing dispersions Process for producing dispersions

2006-01-31

2006-01-31

Banks, Derris H. (Department: 3725)

Solid material comminution or disintegration

Processes

By utilizing kinetic energy of projected or suspended material

C241S016000, C241S039000, C241S040000, C241S057000, C241SDIG014

Reexamination Certificate

active

06991190

ABSTRACT:
A finely divided, stable dispersion of a solid is produced by: spraying at least two streams of a preliminary dispersion, each through a separate nozzle by pumps, onto a collision point in a reactor chamber enclosed by a reactor housing; passing water vapor through an opening into the reactor chamber so that a vaporous atmosphere consisting mainly of water vapor prevails in the reactor chamber; and removing the finely divided dispersion and a) vapor, b) partially condensed vapor consisting mainly of water or c) a combination of a) and b) from the reactor chamber by excess pressure of an incoming water vapor on the gas inlet side; wherein the solid has an average particle size of from 10 nm to 10 μm.

REFERENCES:
patent: 5507439 (1996-04-01), Story
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patent: 5967964 (1999-10-01), Hattori et al.
patent: 6398404 (2002-06-01), Karasawa
patent: 6582508 (2003-06-01), Dietz et al.
patent: 2002/0109025 (2002-08-01), Vemuri et al.
patent: 199 82 217 (1999-10-01), None
patent: 0 766 997 (1997-04-01), None

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