PVB Film With UV Protection and Low Yellow Value For Laminated Safety Glass
AssigneeKuraray Europe GmbH
InventorsPhilipp Lellig, Uwe Keller
Life of this patent
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Abstract
A polyvinyl acetal film contains at least one plasticizer and 0.01-1.5% by weight of at least one UV absorber of Formula 1 where R1, R2, R3, R4, R5, R6, R7, R8 are H, halogen, C1-20 alkyl, hydroxyalkyl, or alkoxyalkyl, and R9, R10 are branched or unbranched C1-50 alkyl, hydroxyalkyl, or alkoxyalkyl groups. The films can be used as museum glazing, display window glazing, as motor vehicle glazing, aircraft glazing, in photovoltaic modules, in LED or OLED screens, televisions, computer screens, big screens, in electrochromic glass elements, photochromic glass elements, and photoelectrochromic glass elements.
Claims16
A film comprising at least one polyvinyl acetal, at least one plasticizer, and 0.01-1.5% by weight of at least one UV absorber of Formula 1
- where
- R1, R2, R3, R4, R5, R6, R7, and R8 are H, halogen, or C1-20, alkyl, hydroxyalkyl, or alkoxyalkyl groups, and
- R9, R10 are branched or unbranched C1-50 alkyl, hydroxyalkyl, or alkoxyalkyl groups.
Dependencies are inferred from the claim text.