| 摘要 |
PROBLEM TO BE SOLVED: To provide a solid drawing material which uses platy alumina as an extender and has better color developing property and bending strength than those of a conventionally known solid drawing material obtained from platy alumina whose surface is treated with a silane coupling material or a titanate-based coupling material. SOLUTION: This solid drawing material is characterized by using composite platy alumina whose surface is preliminarily coated with a resin. COPYRIGHT: (C)2004,JPO&NCIPI
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