CURABLE COMPOSITION AND METHOD FOR PRODUCING CURED FILM
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United States of America
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Mar 13, 2025
app pub date -
Sep 5, 2024
filing date -
Sep 5, 2024
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Abstract
A curable composition cured by irradiation with active rays. The content of a monofunctional polymerizable compound having a melting point of 25° C. or less is 5-50% by mass; the content of a polyfunctional polymerizable compound is 50-95% by mass. When a nanoindentation evaluator is used to press an indenter into a cured film (obtained by curing a coating film with an average thickness of 8 μm by irradiation with an active ray at a cumulative light amount of 400 mJ/m2) by 100 nm in the thickness direction, P1 is a load amount required for pressing, and P2 is a load amount after the pressing is maintained for 2 seconds, the cured film satisfies conditions (1) and (2): (1) P2 is 20 μN or less, and (2) A relaxation rate determined by an expression ((P1−P2)/P1×100) is 15% or more.
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