RADIATION-CURABLE ADHESIVE SHEET

An object of the present invention is to provide a radiation curable pressure-sensitive adhesive sheet with excellent storage stability, which can suppress the progress of curing during storage and maintain excellent level difference absorbability and stress relaxation properties for a long time. A...

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Bibliographic Details
Main Authors YAMAMOTO, Shinya, KATAMI, Hirofumi, FUKUTOMI, Shuhei
Format Patent
LanguageEnglish
French
German
Published 07.02.2024
Subjects
ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE
ADHESIVES
CHEMISTRY
DYES
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL
PAINTS
POLISHES
USE OF MATERIALS AS ADHESIVES
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Summary:An object of the present invention is to provide a radiation curable pressure-sensitive adhesive sheet with excellent storage stability, which can suppress the progress of curing during storage and maintain excellent level difference absorbability and stress relaxation properties for a long time. 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, the photopolymerization initiator 11a has a pKa of 5 to 12.7.
Bibliography:Application Number: EP20220780489