Resin composition, molded article, light stabilizer composition, method for producing resin composition, method for suppressing decrease in molecular weight of synthetic resin under light irradiation, and hindered amine compound

A resin composition with specific hindered amine compounds addresses the inefficacy of existing stabilizers by combining a synthetic resin with hindered amine compounds to prevent molecular weight reduction under light, especially in acidic environments.

WO2026088946A1PCT designated stage Publication Date: 2026-04-30ADEKA CORP
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Patent Information

Authority / Receiving Office
WO Β· WO
Patent Type
Applications
Current Assignee / Owner
ADEKA CORP
Filing Date
2025-10-21
Publication Date
2026-04-30

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Abstract

Provided is a resin composition in which a decrease in molecular weight of a synthetic resin under light irradiation is suppressed.γ€€This resin composition contains a synthetic resin, a hindered amine compound represented by general formula (1), and a hindered amine compound (excluding the hindered amine compound represented by general formula (1)) having a molecular weight of 500 or more. In general formula (1), R1 and R2 each independently represent a hydrogen atom, a hydroxyl group, an alkyl group having 1-30 carbon atoms, and being unsubstituted or having a substituent, or an alkoxy group having 1-30 carbon atoms, and being unsubstituted or having a substituent.
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