Active energy ray curable composition, cured product, and coated electric wire
The active energy ray-curable composition, comprising urethane (meth)acrylate polymer, methacrylate monomers, and a fluorescent agent, addresses the issue of insufficient sealing post-thermal cycling by enhancing storage modulus, elastic modulus ratio, and crosslinking density, achieving robust and durable sealing in vehicle applications.
JP2026111388APending Publication Date: 2026-07-03TOAGOSEI CO LTD
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- TOAGOSEI CO LTD
- Filing Date
- 2024-12-23
- Publication Date
- 2026-07-03
Smart Images
Figure 2026111388000003 
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Abstract
The present invention provides an active energy ray curable composition that yields a cured product with excellent sealing properties both initially and after thermal cycling tests, as well as a coated wire sealing composition, cured product, and coated wire utilizing the same. [Solution] The storage modulus at 25°C in the cured product of the active energy ray curable composition is 1.0 × 10⁻⁶. 8 The Pa is greater than or equal to the storage modulus of the active energy ray-curable composition, the ratio of the storage modulus at 100°C to the storage modulus at -30°C in the cured product is 0.0006 or greater, and the crosslinking density calculated from the equilibrium modulus at 180°C in the cured product of the active energy ray-curable composition is 1.1 × 10⁻¹⁰. -6 ~4.8×10 -6 mol / cm 3 The present invention relates to an active energy ray curable composition, as well as a coated wire sealing composition, cured product, and coated wire utilizing the same.
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