HETEROGENEOUS ETHYLENE ALPHA-OLEFIN INTERPOLYMERS

摘要

PROBLEM TO BE SOLVED: To provide interpolymers which have good optical and tear properties and are excellent in processability.SOLUTION: An interpolymer of ethylene and at least one α-olefin has an average Mand a valley temperature between the interpolymer and a high crystalline fraction Tsuch that the average Mfor a fraction above Tfrom analytical temperature rising elution fractionation (ATREF) divided by the average Mof the whole polymer from the ATREF (M/M) is less then about 1.95. The ethylene interpolymer has a composition distribution breadth index (CDBI) of less than 60%. The interpolymer of ethylene and at least one α-olefin has a high density (HD) fraction and an overall density such that percent HD fraction<-2733.3+2988.7x+144111.5(x-0.92325), where x is the density in g/cm.