Patent ID: 9056445
Filing Date: 2015-06-16
Classification: B32B,C08K,Y10T

Abstract:
1. A multilayer sheet, comprising: a first cap layer formed from a first cap composition comprising potassium perfluorobutane sulfonate, 50wt % to 98wt % branched polycarbonate, and a brominated polycarbonate such that the first cap composition comprises 0.0125wt % to 2.5wt % bromine, based on the total weight of the first cap composition; a second cap layer formed from a second cap composition comprising potassium perfluorobutane sulfonate, 50wt % to 98wt % branched polycarbonate, and a brominated polycarbonate such that the second cap composition comprises 0.0125wt % to 2.5wt % bromine, based on the total weight of the second cap composition; and a core layer formed from a core composition comprising 50wt % to 98wt % branched polycarbonate and 0.5wt % to 5wt % brominated polycarbonate, based on the total weight of the core composition, and without potassium perfluorobutane sulfonate, wherein the core layer is disposed between the first cap layer and the second cap layer; wherein the first cap composition comprises greater than or equal to 0.05wt % potassium perfluorobutane sulfonate, based upon a total weight of the first cap composition; and wherein the second cap composition comprises greater than or equal to 0.05wt % potassium perfluorobutane sulfonate, based upon a total weight of the second cap composition; wherein the multilayer sheet has a UL94 V