Mono- or multilayer stabilized polyester film
AssigneeMitsubishi Polyester Film GmbH
InventorsHolger Kliesch, Ursula Murschall, Ingo Fischer, Martin Jesberger, Lothar Bothe
Life of this patent
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Abstract
Biaxially oriented mono- or multilayered polyester film containing at least one UV stabilizer according to formula (I): wherein R1 is —H, C1-C12-alkyl, -aryl, —S—(C1-C12)-alkyl or —O—R9 or —O—(C1-C5)-alkylene-C(O)O—R9, wherein R9 is -aryl or C1-C12-alkyl, R3 and R4 and R2, R5, R6, R7 and R8 independently from each other represent —H, —(C1-C12)-alkyl, —O—(C1-C12)-alkyl, -aryl or —O-aryl, wherein said alkyl radicals with more than two C-atoms and alkylene radicals with more than one C-atom can be linear or branched.
Claims21
Biaxially oriented mono- or multilayered polyester film comprising (i) polymer consisting of polyester and, optionally, up to 20% by weight of polyamide or polyetherimide and (ii) at least one UV stabilizer according to formula (I):
- wherein
- R1 is —H, —C1-C12-alkyl, -aryl, —S—(C1-C12)-alkyl or —O—R9 or —O—(C1-C5)-alkylene-C(O)O—R9, wherein
- R9 is -aryl or —C1-C12-alkyl,
- R3 and R4 are
- and
- R2, R5, R6, R7 and R8 independently from each other represent —H, —(C1-C12)-alkyl, —O—(C1-C12)-alkyl, -aryl or —O-aryl,
- wherein said alkyl radicals with more than two C-atoms and alkylene radicals with more than one C-atom can be linear or branched.
Biaxially oriented mono- or multilayered polyester film comprising at least one UV stabilizer according to formula (I):
- wherein
- R1 is —H, —C1-C12-alkyl, -aryl, —S—(C1-C12)-alkyl or —O—R9 or —O—(C1-c5)-alkylene-C(O)O—R9, wherein
- R9 is -aryl or —C1-C12-alkyl
- R3 and R4 are
- and
- R2, R5, R6, R7 and R8 independently from each other represent —H, —(C1-C12)-alkyl, —O—(C1-C12)-alkyl, -aryl or —O-aryl,
- wherein said alkyl radicals with more than two C-atoms and alkylene radicals with more than one C-atom can be linear or branched
- and said film retains a tensile strength after 1000 hours of weathering of 70% to 91% of its initial value.
Dependencies are inferred from the claim text.