Title:
HIGH PRESSURE MEDIA AND METHOD OF CREATING ULTRA-FINE PARTICLES
Document Type and Number:
WIPO Patent Application WO2002094443
Kind Code:
A3
Abstract:
This invention discloses a high pressure media mill (HPMM) and processes for use thereof: (a) adding grinding media and material to be milled to a high pressure media mill; (b) evacuating mill to produce a vaccum; (c) adding a supercritical fluid or volatile gas to said mill; (d) pressurizing and maintaining pressure in said mill; and (e) operating the mill so that product particles are reduced in size.
Inventors:
FORD WILLIAM NORMAN (US)
GOMMEREN ERIC H J C (US)
ZHAO QUAN QIU (US)
GOMMEREN ERIC H J C (US)
ZHAO QUAN QIU (US)
Application Number:
PCT/US2002/016159
Publication Date:
March 13, 2003
Filing Date:
May 22, 2002
Export Citation:
Assignee:
DU PONT (US)
FORD WILLIAM NORMAN (US)
GOMMEREN ERIC H J C (US)
ZHAO QUAN QIU (US)
FORD WILLIAM NORMAN (US)
GOMMEREN ERIC H J C (US)
ZHAO QUAN QIU (US)
International Classes:
B02C17/16; B02C17/18; B02C17/20; B02C17/24; (IPC1-7): B02C17/16; B02C17/18; B02C17/24
Foreign References:
| US5854311A | 1998-12-29 | |||
| US4221342A | 1980-09-09 | |||
| US1040455A | 1912-10-08 | |||
| US5934579A | 1999-08-10 | |||
| US5662279A | 1997-09-02 |
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