Thermally conductive composition, two part curable thermally conductive composition, thermally conductive member, and battery assembly

A thermally conductive composition with specific components and ratios addresses storage stability and dielectric constant issues, ensuring effective heat dissipation in lithium-ion batteries.

JP2026023234APending Publication Date: 2026-02-13SEKISUI CHEMICAL CO LTD
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Patent Information

Application Number
JP2024125120
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-07-31
Publication Date
2026-02-13

AI Technical Summary

Technical Problem

Existing thermally conductive compositions used in lithium-ion batteries face challenges in achieving long-term storage stability and low dielectric constant, particularly when containing aluminum hydroxide and organic polymers with hydrolyzable silyl groups, leading to viscosity increase and potential static electricity issues.

Method used

A thermally conductive composition comprising an organic polymer with hydrolyzable silyl groups, aluminum hydroxide, a glycol ether with one hydroxyl group, and water, with specific hydrogen bond term and component ratios, to achieve stability and low dielectric constant.

Benefits of technology

The composition provides good long-term storage stability and a cured product with a low dielectric constant, suitable for heat dissipation in lithium-ion batteries.

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Abstract

To provide a thermally conductive composition containing an organic polymer having a hydrolyzable silyl group and aluminum hydroxide, and having good long-term storage stability and a low dielectric constant.SOLUTION: A thermally conductive composition comprising (A) an organic polymer having a hydrolyzable silyl group, (B) aluminum hydroxide, (C) a glycol ether having one hydroxyl group, and (D) water, wherein a hydrogen bond term δ HEW of Hansen solubility parameter calculated from (C) the glycol ether having one hydroxyl group and (D) the water is 25 to 32.5.SELECTED DRAWING: None
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Citation Information

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