Granulated powder containing aluminum nitride powder, its use, and method for producing granulated powder.

A granulated aluminum nitride powder with water-soluble acrylic resin and higher fatty acid additives addresses hydrolysis issues, enhancing moldability and thermal conductivity while reducing environmental impact.

JP7876317B2Active Publication Date: 2026-06-19NORITAKE MACHINE TECHNO CO LTD
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Patent Information

Application Number
JP2022056631
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Filing Date
2022-03-30
Publication Date
2026-06-19
Estimated Expiration
2042-03-30

AI Technical Summary

Technical Problem

Existing methods for preparing aluminum nitride substrates using aqueous solvents face challenges in suppressing hydrolysis, leading to oxidation and reduced moldability, and the use of non-aqueous solvents poses environmental and cost burdens.

Method used

A granulated powder comprising aluminum nitride powder with a specific ratio of water-soluble acrylic resin and higher fatty acid additives, which suppresses hydrolysis and enhances moldability, allowing for the use of aqueous solvents and reducing environmental impact.

Benefits of technology

The technology ensures high moldability and cohesiveness of the granulated powder, effectively suppressing hydrolysis and improving thermal conductivity of the ceramic sintered body, while minimizing environmental burden and processing costs.

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Patent Text Reader

Abstract

To provide a granulated powder whose formability is secured and whose reaction with water is suppressed.SOLUTION: The present invention provides a granulated powder including an aluminum nitride powder, a water-soluble acrylic resin and a higher fatty acid as additives. In the granulated powder, when the aluminum nitride powder is 100 pts.mass, a total ratio of the additives is 5 pts.mass or more and 20 pts.mass or less, and a mass ratio of the water-soluble acrylic resin to the higher fatty acid is 98:2 to 50:50.SELECTED DRAWING: Figure 3
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Citation Information

Patent Citations

  • Production of aluminum nitride green sheet

    JP2000264736A

  • Method for treating surface in order to prepare water- resistant aluminum nitride powder

    JP2003128956A

  • Method and apparatus for manufacturing aluminum nitride granule

    JP2004292178A

  • Method for producing resin composition for molding use

    JP2010242003A

  • Manufacturing method of sintered body of aluminum nitride

    JP2014069993A