Patent ID: 9243090
Filing Date: 2016-01-26
CPC Classification: B32B,C08F,C08L,Y10T

Claim Text:
1. An olefin interpolymer that is an ethylene/a-olefin multi-block copolymer comprising greater than 50 mol % units derived from ethylene and having a Mw/Mn from 2.6 to 5.0; a delta quantity (tallest DSC peak minus tallest CRYSTAF peak) greater than the quantity, y*, defined by the equation: and a heat of fusion up to 130 J/g, wherein the CRYSTAF peak is determined using at least 5 percent of the cumulative polymer, and if less than 5 percent of the polymer has an identifiable CRYSTAF peak, then the CRYSTAF temperature is 30° C., and ΔH is the numerical value of the heat of fusion in J/g, wherein the ethylene/α-olefin multi-block copolymer comprises at least three metal species and one metal species is hafnium and another metal species is zinc, and the ethylene/α-olefin multi-block copolymer has one and only one melting point.