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 Title: |
WO9946437A1:
METHOD FOR EXPANDING LAMELLAR FORMS OF GRAPHITE AND RESULTANT PRODUCT[French]
[ Derwent Title ]
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Country:
Kind: |
WO World Intellectual Property Organization (WIPO)
A1 INTERNATIONAL APPLICATION PUBLISHED WITH INTERNATIONAL SEARCH REPORT i
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| Inventor: |
ZALESKI, Peter, L.; 155 Glennwood, Willow Springs, IL 60480
DERWIN, David, J.; 1541 Quaker Lane, Prospect Heights, IL 60070
GIRKANT, Richard, J.; Apartement 203, 18762 E. Salem Court, Lansing, IL 60438
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| Assignee: |
SUPERIOR GRAPHITE CO., Suite 1600, 10 South Riverside Plaza, Chicago, IL 60606, United States of America
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| Published / Filed: |
1999-09-16
/ 1999-03-10
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| Application Number: |
WO1999US0005208
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| IPC Code: |
Advanced:
C01B 31/04;
H01M 4/62;
Core:
C01B 31/00;
more...
IPC-7:
D01F 9/12;
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| ECLA Code: |
H01M4/62C2;
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| Priority Number: |
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| Abstract: |
A method for making expanded graphite from lamellar flake graphite comprising first providing lamellar flake graphite particles having at least a minimal purity, then intercalating the lamellar flake graphite particles with an expandable graphite intercalation compound, followed by expanding the graphite intercalation compound to exfoliate the flake graphite particles, and finally air milling the exfoliated flake graphite particles to further delaminate them.
L'invention concerne un procédé de production de graphite expansé à partir de graphite lamellaire, le procédé consistant tout d'abord à prendre des particules de graphite lamellaire présentant au moins une pureté minimale, puis à intercaler entre les particules de graphite lamellaire un composé d'intercalation de graphite pouvant être expansé; ensuite, on soumet le composé d'intercalation de graphite à une expansion pour exfolier les particules de graphite lamellaire, et enfin on soumet les particules de graphite lamellaire exfoliées à un broyage à l'air pour les délaminer d'avantage.
[French]
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| Attorney, Agent or Firm: |
HELLER, Stephen, B. ;
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| INPADOC Legal Status: |
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| Family: |
Show 16 known family members
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First Claim:
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CLAIMS
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Description
Expand description |
+ METHOD FOR EXPANDING LAMELLAR FORMS
OF GRAPHITE AND RESULTANT PRODUCT
+ BACKGROUND OF THE INVENTION
Highly lamellar forms of graphite have found wide ranging industrial applicability because of their low thermal and electrical resistivity and their ability to enhance thermal and electrical conductivity when added to a low or non-conductive particulate (material). Specifically, when highly lamellar graphite is mixed with or dispersed in particulate which are non-conductive or partially electrically conductive, the thin platelets of graphite become interlaced between the base particles, thus providing a more conductive path and more uniform contact with the particles than could achieved using the same concentration of non- lamellar graphite.
+ Brief Description of the Drawing
Fig. 1 is a schematic drawing illustrating the expansion and milling steps of the inventive process. ###
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