Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Pieter Jan Antoon Janssen0
Duygu Deniz Gunbas0
Jong Woo Lee0
Nadia Grossiord0
Date of Patent
March 1, 2022
Patent Application Number
16868891
Date Filed
May 7, 2020
Patent Citations
Patent Primary Examiner
Patent abstract
A multilayer film can comprise: a plurality of layers, preferably 4 layers to 128 layers, comprising: a polymer A layer comprising a polycarbonate copolymer and a polymer B layer comprising a semi-crystalline polyester; wherein a differential solubility parameter (ΔδAB) of polymer A towards polymer B (ΔδAB) is greater than or equal to 2.6 MPa1/2; and an interdiffusion region between each polymer A and polymer B. The multilayer film has a dynamic flexure of greater than or equal to 200,000 cycles, as determine by bending 180° on a 10 mm radius cylinder at a rate of 1 hertz. The multilayer film has a total thickness of 40 μm to 70 μm, a transmission at 360 nm to 750 nm of greater than or equal to 89% and a haze of less than or equal to 1%.
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