Patent ID: 9739912
Date: 2017-08-22
CPC Classifications: B32B,G02B

Claim:
1. A multilayer polymeric reflector comprising: a) a plurality of first optical layers, each first optical layer comprising a polyester having terephthalate comonomer units and ethylene glycol comonomer units, said polyester having a glass transition temperature, wherein each first optical layer is oriented, and b) a plurality of second optical layers disposed in a repeating sequence with the plurality of first optical layers, each second optical layer comprising a blend of polymethyl methacrylate (PMMA) and polyvinylidene fluoride (PVDF), wherein said blend has a glass transition temperature less than the glass transition temperature of the polyester comprising the first optical layers, and wherein the amount of PVDF in the PMMA/PVDF blend is greater than and not equal to about 40% and not more than about 65%; wherein the multilayer polymeric reflector has a reflectivity of greater than 97.8% in a visible wavelength region and a transmission haze value of less than 50% in a visible wavelength region.