UV STABLE POLYVINYL BUTYRAL SHEET

摘要

Polyvinyl butyral sheet for laminated safety glass containing multivalent, preferably divalent, metal salt and a UV-stabilizing amount of a benzotriazolebased compound of formula (1) wherein R1 denotes CH3, linear or branched C5 alkyl or linear or branched C12 alkyl and R2 denotes CH3 or linear or branched C5 alkyl.