Curable composition and its cured film

A curable composition with a specific silicone polymer and solvent ratio forms a protective film that addresses the challenges of low gas emission and flatness, ensuring uniformity and adherence to other protective film requirements.

JP2026062461APending Publication Date: 2026-04-09NIPPON STEEL CHEM & MATERIAL CO LTD
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2025-06-26
Publication Date
2026-04-09

AI Technical Summary

Technical Problem

Conventional protective films for color liquid crystal displays face challenges in achieving both low gas emission and flatness, particularly when using silicone-based surfactants, which can lead to uneven coating and poor contact, while also needing to meet requirements for heat resistance, chemical resistance, adhesion, hardness, electrical reliability, and transparency.

Method used

A curable composition comprising a compound cured by light or heat, a hardener, a silicone polymer with specific structural units, and a solvent, with a defined ratio of these components, forms a protective film that achieves excellent coating uniformity and flatness, along with desired properties like heat resistance, chemical resistance, adhesion, hardness, and transparency.

Benefits of technology

The composition enables the formation of a protective film that satisfies the requirements of flatness and low gas emission, while maintaining excellent coating uniformity and properties such as heat resistance, chemical resistance, adhesion, hardness, and transparency, even when using a silicone-based surfactant.

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Abstract

To provide a curable composition and a cured film obtained by curing the same, which satisfy the required properties of flatness and low gas emission, while also being excellent in heat resistance, chemical resistance, adhesion, hardness, electrical reliability and transparency, and which enables the formation of a protective film with excellent coating uniformity and flatness even when using a silicone-based surfactant. [Solution] A curable composition and its cured film comprising (A) a compound that is cured by light or heat, (B) a curing agent, (C) a silicone polymer, and (D) a solvent.
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Citation Information

Patent Citations

  • Thermosetting composition, cured film and display device

    JP2019119765A