Invention Grant
- Patent Title: Process for producing spherical aluminum nitride powder and spherical aluminum nitride powder produced by the same process
- Patent Title (中): 生产球形氮化铝粉末和球形氮化铝粉末的方法同样的方法生产
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Application No.: US13516268Application Date: 2011-01-31
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Publication No.: US09199848B2Publication Date: 2015-12-01
- Inventor: Kazutaka Watanabe , Takehiko Yoneda
- Applicant: Kazutaka Watanabe , Takehiko Yoneda
- Applicant Address: JP Shunan-shi
- Assignee: TOKUYAMA CORPORATION
- Current Assignee: TOKUYAMA CORPORATION
- Current Assignee Address: JP Shunan-shi
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: JP2010-018515 20100129; JP2010-083459 20100331
- International Application: PCT/JP2011/051886 WO 20110131
- International Announcement: WO2011/093488 WO 20110804
- Main IPC: B32B5/16
- IPC: B32B5/16 ; C01B21/072
Abstract:
To provide a process capable of efficiently producing a spherical aluminum nitride powder having a size most suited for use as a filler, and having a high sphericalness and a large particle strength.A spherical aluminum nitride powder is produced by using a spherical granulated product of an alumina powder or an alumina hydrate powder as a starting material, and feeding the spherical granulated product to the step of reductive nitrogenation so as to be reductively nitrogenated.
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