Patent ID: 7271221

Claim:
An olefin polymer, comprising: a) a low molecular weight polymer fraction having 0.1 LCBs/1000 carbons to about 10 LCBs/1000 carbons; and b) a high molecular weight polymer fraction having 0.1 LCBs/1000 carbons to about 10 LCBs/1000 carbons; wherein the olefin polyer is characterized by an R v of about 0.12 or higher, where R v is defined as: R v = [vinyl] [vinyl] + [vinylidene] + [cis] + [trans] wherein [vinyl] is the concentration of vinyl groups in the olefin polymer expressed in vinyls/1,000 carbon atoms; [vinylidene], [cis] and [trans] are the concentration of vinylidene, cis and trans groups in the olefin polymer expressed in the number of the respective groups per 1,000 carbon atoms; and wherein the olefin polymer has a melt strength of about 5 cN at 190° C., and when the polymer is made into a film, the film has a CD shrink of at least 20%.