Patent ID: 8916259
Filing Date: 2014-12-23
Classification: B29C,B32B,Y10T

Abstract:
1. A multilayer thermoplastic film comprising: a first layer comprising a first polycarbonate polymer that comprises repeat units derived from monomers (II), (III), and (IV), wherein wherein n is 0 to 4, and R wherein m is 1 to 4, and R wherein R an additional polycarbonate polymer that is not the same as the first polycarbonate polymer, wherein the additional polycarbonate polymer comprises wherein R wherein R 0.002 wt. % to 0.07 wt. % of a catalyst for the reaction of the first polycarbonate polymer and the additional polycarbonate polymer, based on the total weight of the polycarbonate polymers; and a second layer in contact with the first layer, wherein the second layer comprises a second polycarbonate polymer that is not the same as the first polycarbonate polymer in the first layer.