Modified boron nitride powder

Modifying BN powder with polyethylene glycol-functional organics enhances its surface polarity, reducing resin composite viscosity and enabling higher filler content for improved thermal management in electronic components.

WO2026060057A1PCT designated stage Publication Date: 2026-03-19MOMENTIVE PERFORMANCE MATERIALS QUARTZ INC
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Patent Information

Application Number
PCT/US2025/045855
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2025-06-20
Filing Date
2025-09-11
Publication Date
2026-03-19

AI Technical Summary

Technical Problem

Boron nitride (BN) powder increases the viscosity of polymer resin composites, making industrial processing difficult, while reducing its amount compromises thermal management benefits.

Method used

Modify BN powder with polyethylene glycol-functional organics to enhance surface polarity, improving compatibility with polymer resins and reducing viscosity without sacrificing thermal conductivity.

Benefits of technology

The modified BN powder achieves up to a two-order magnitude lower viscosity in resin composites, allowing higher filler content without compromising thermal conductivity and dielectric strength, suitable for electronics, telecommunications, automotive, and aerospace industries.

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Abstract

A powder is provided that includes boron nitride particles or agglomerates. Polyethylene glycol-functional compounds are arranged on outer surfaces of the boron nitride particles or agglomerates such that the boron nitride particles or agglomerates have an elevated surface polarity activated by polyethylene glycol-functional compounds.
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Citation Information

Patent Citations

  • A PEG ball-milled intercalated h-BN modified polyurethane thermally conductive composite material and its preparation method

    CN110746563B

  • Process for manufacturing boron nitride agglomerates

    US20170362440A1