Patent ID: 6635340
Filing Date: 2003-10-21
Classification: B32B,C08L,Y10T

Abstract:
A white, biaxially oriented, flame-retardant polyester film comprising at least one polyester layer, wherein at least this layer comprises, based on the weight of this layer, from 4 to 60% by weight of a cycloolefin copolymer (COC), selected from the group consisting of norbornene/ethylene copolymers and tetracyclododecene/ethylene copolymers with an ethylene content of 5 to 80% by weight where the glass transition temperature of the COC is within the range from 110 to 270Â° C., and wherein the layer comprises at least one organic phosphorus compound as a flame retardant; said polyester film containing from about 10-70% by weight regrind.