Ultraviolet-curable silicone composition, silicone cured product, and optical device
The UV-curable silicone composition cures without heating by using specific components, addressing oxygen inhibition and achieving strong adhesion in optical devices.
WO2026070339A1 Publication Date: 2026-04-02SHIN ETSU CHEMICAL CO LTD
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Patent Information
- Application Number
- PCT/JP2025/031736
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2024-09-25
- Filing Date
- 2025-09-09
- Publication Date
- 2026-04-02
AI Technical Summary
Technical Problem
Conventional UV-curable materials require a heating step after UV irradiation to cure quickly due to oxygen inhibition, which complicates the process and may not achieve optimal adhesive strength.
Method used
An ultraviolet-curable silicone composition comprising specific components (A) to (D) that allow curing without a heating process, including units with aryl groups, a photoactive platinum complex catalyst, and a photopolymerization initiator, enabling atmospheric curing with good adhesive strength.
Benefits of technology
The composition cures effectively under UV irradiation without heating, producing a cured product with superior adhesive strength and mechanical properties, suitable for optical devices.
✦ Generated by Eureka AI based on patent content.
Abstract
The present invention is an ultraviolet-curable silicone composition containing the following components (A)-(D). (A) an organopolysiloxane resin having, as constituent units, a unit represented by formula (1) below, an R1 3SiO1 / 2 unit, an R1 2SiO2 / 2 unit, and an SiO4 / 2unit, wherein 5% or more of the total number of monovalent organic groups bonded to silicon atoms are aryl groups; (B) an organic silicon compound having two or more hydrogen atoms bonded to the silicon atoms in one molecule and having an acryloyloxyalkyl group, a methacryloyloxyalkyl group, an acryloyloxyalkyloxy group, or a methacryloyloxyalkyloxy group bonded to a silicon atom; (C) a photoactive platinum complex catalyst; and (D) a photopolymerization initiator. As a result, the present invention provides an ultraviolet-curable silicone composition that can be cured by ultraviolet irradiation without requiring a heating step in the atmosphere, and that provides a cured product having good adhesive strength.
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