Curable composition, cured film, and imaging device

The curable composition with titanium dioxide and polymerizable compounds addresses the limitations of existing lens-forming materials by enhancing refractive index and heat resistance, suitable for optical equipment.

JP2026062039APending Publication Date: 2026-04-09SUMITOMO CHEM CO LTD
View PDF 1 Cites 0 Cited by

Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-09-30
Publication Date
2026-04-09

AI Technical Summary

Technical Problem

Existing curable compositions for forming lenses lack high refractive index and adequate heat resistance, limiting their performance in optical equipment.

Method used

A curable composition containing titanium dioxide particles, preferably rutile-type, and specific polymerizable compounds, along with additives like polymerization initiators, silane coupling agents, and antioxidants, to enhance refractive index and heat resistance.

Benefits of technology

The resulting cured film exhibits a high refractive index and improved heat resistance, suitable for applications in imaging devices.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure 2026062039000001
    Figure 2026062039000001
  • Figure 2026062039000002
    Figure 2026062039000002
  • Figure 2026062039000003
    Figure 2026062039000003
Patent Text Reader

Abstract

To provide a curable composition capable of forming a cured product having a high refractive index and good heat resistance. [Solution] A curable composition is provided that contains titanium dioxide particles and a polymerizable compound. The polymerizable compound is a compound having one or two ethylenically unsaturated bonds. The molecular weight or weight-average molecular weight of the polymerizable compound is 3000 or less. The total content of titanium dioxide particles and the polymerizable compound is 85% by mass or more, based on the total amount of solids in the curable composition.
Need to check novelty before this filing date? Find Prior Art

Citation Information

Patent Citations

  • Optical member set and solid-state imaging element using the same

    JP2016164674A