Title:
MELAMINE BORATE PARTICLE, ITS PRODUCTION AND USE THEREOF AND PRODUCTION OF HEXAGONAL BORON NITRIDE POWDER
Document Type and Number:
Japanese Patent JP3461651
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To produce a resin or a rubber product or a hexagonal boron nitride sintered compact having low anisotropy without deteriorating excellent characteristics of the hexagonal boron nitride.
SOLUTION: A melamine borate particle comprising aggregated primary particles of needlelike crystals of melamine borate or a mixture containing the grains is produced. A crystallizing catalyst is then added thereto and the resultant mixture is heat-treated to produce a, hexagonal boron nitride powder, comprising a mixture of 20-100wt.% hexagonal boron nitride particles containing aggregated scaly primary particles of the hexagonal boron nitride without orienting with 80-0wt.% boron nitride particles other than the primary particles and having 1.0-2.5 graphitization index(GI) measured by a powder X-ray diffractometry at 6-20 ratio (I002/I100) of the intensity I002 of a (002) diffraction line to the intensity I100 of a (100) diffraction line. The resultant powder is blended as a filler for a resin and/or a rubber therewith and formed or sintered to afford a sintered compact.
Inventors:
Suguru Kawasaki
Yukio Kuroda
Hiroshi Nishikawa
Hiroyuki Hara
Yukio Kuroda
Hiroshi Nishikawa
Hiroyuki Hara
Application Number:
JP2876896A
Publication Date:
October 27, 2003
Filing Date:
January 24, 1996
Export Citation:
Assignee:
DENKI KAGAKU KOGYO KABUSHIKI KAISHA
International Classes:
C01B21/064; C04B35/583; C04B35/626; C07D251/54; (IPC1-7): C04B35/626; C01B21/064
Domestic Patent References:
| JP1184033A |
Other References:
【文献】米国特許3241918(US,A)
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