Patent ID: 7737220
Filing Date: 2010-06-15
Classification: C08L

Abstract:
1. A process to prepare a blend of at least two ethylene homopolymer blend components, wherein at least one of the said blend components has a molecular weight distribution, Mw/Mn, of less than 2.5 and an Mn of less than 30,000; each of said components has a molecular weight distribution, Mw/Mn, of less than 2.5 and wherein said blend characterized by having: and further characterized that a polyethylene film prepared from said blend has a Water Vapor Transmission Rate, WVTR, of less than or equal to 0.32 g/100 in said process comprising contacting at least on single site polymerization catalyst system with ethylene under polymerization conditions for said ethylene in at least two polymerization reactors and blending together the polyethylene produced in said at least two polymerization reactors.