Title:
HIGHLY DELAMINATED HEXAGONAL BORON NITRIDE POWDERS, PROCESS FOR MAKING, AND USES THEREOF
Document Type and Number:
WIPO Patent Application WO2001083371
Kind Code:
A3
Abstract:
The present invention relates to a powder comprising boron nitride particles having an aspect ratio of from about 50 to about 300. The present invention also relates to a method of making delaminated boron nitride powder. This method involves providing boron nitride powder and milling the boron nitride powder in a mixture including a milling media and a milling liquid under conditions effective to produce delaminated boron nitride powder. Another aspect of the present invention is a method for extruding a molten polymer. This method involves blending a powder comprising hexagonal boron nitride particles having an aspect ratio of from about 50 to about 300 with a polymer to form a blend and extruding the blend through an extruder under conditions effective to disperse the boron nitride particles throughout the polymer to form an extrusion product.
Inventors:
CLERE THOMAS M
Application Number:
PCT/US2001/014041
Publication Date:
March 21, 2002
Filing Date:
May 01, 2001
Export Citation:
Assignee:
SAINT GOBAIN CERAMICS (US)
International Classes:
C01B21/064; C08K3/38; C08L101/00; B29C48/04; (IPC1-7): C01B35/14; C08K3/38; B29C47/00
Foreign References:
| US5688457A | 1997-11-18 |
Other References:
T. HAGIO ET AL., JOURNAL OF THE AMERICAN CERAMIC SOCIETY, vol. 72, no. 8, 1989, pages 1482 - 1484, XP002183518
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