Patent ID: 9738784
Date: 2017-08-22
CPC Classifications: B29C,C08J,C08L,Y10T

Claim:
1. An extruded polymer blend comprising at least 70 weight percent aliphatic polycarbonate and at least one polyolefin, wherein: the aliphatic polycarbonate comprises a blend of two or more aliphatic polycarbonates having a different average molecular weight and having greater than 90% carbonate linkages and less than 10% ether linkages; the aliphatic polycarbonate is selected from the group consisting of poly(propylene carbonate), poly(ethylene carbonate), poly(propylene carbonate)-co-poly(ethylene carbonate), a poly(propylene carbonate) co-polymer with one or more additional aliphatic polycarbonates, a poly(ethylene carbonate) co-polymer with one or more additional aliphatic polycarbonates, a physical blend of any two or more of the above, and a copolymer comprising any of the above.