Radiation-curable adhesive sheet
US12404428B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 24, 2022 |
| Grant date | Sep 2, 2025 |
| Priority date | — |
| Expiry date | Mar 24, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09J2433/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A radiation curable pressure-sensitive adhesive sheet 1 of the present invention has a pressure-sensitive adhesive layer 10 that is cured by irradiation with radiation. The pressure-sensitive adhesive layer 10 contains a photopolymerization initiator 11a and a crosslinking agent 11b, and the curing by irradiation with radiation is curing by a reaction between the photopolymerization initiator 11a and the crosslinking agent 11b. In the radiation curable pressure-sensitive adhesive sheet 1 of the present invention, when the pressure-sensitive adhesive layer 10 is stored at 50° C. for 4 weeks, a rate of change in residual stress (N/cm2) expressed by the following equation is 70% or less. Residual stress change rate (%)=(residual stress after storage at 50° C. for 4 weeks−initial residual stress)/(initial residual stress)×100
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.