Elastic films including crystalline polymer and crystallizable polymers of propylene

A film comprising a blend of polymers, said film having excellent resistance to set and excellent resistance to load decay, said blend of polymers being substantiallly noncrosslinked, comprising:

• a) a first polymer component having:
• i) a composition distribution such that at least 75 weight percent of the polymer is isolated in two adjacent soluble fractions, each of these fractions has a composition difference of no greater than 20% (relative, of the average weight percent ethylene content of the whole first polymer component;
• ii) a melting point, as determined by differential scanning calorimeter (DSC) less than 105° C.;
• iii) a heat of fusion less than 45 J/g;
• iv) propylene and an alpha-olefin present in said first polymer component, wherein said alpha-olefin is present in said first polymer component is from 4-35 weight percent, wherein said alpha-olefin is selected from the group consisting of ethylene and C4-C12 alpha-olefin, said propylene making up the balance of said first polymer component;
• wherein said first polymer component is present in said blend in the range of from 5-100 weight percent;
• and
• b) an optional second polymer component, that is a crystalline polymer having:
• i) a melting point above 115° C.;
• ii) a heat of fusion above 60 J/g;
• iii) propylene present at least 90 weight percent, and an alpha-olefin present at less than 9 weight percent, wherein the total of said propylene and said alpha-olefin in said second polymer component adds to 100 weight percent;
• said second polymer component being present in said blend in the range of from 0-95 weight percent;
• wherein said film exhibits a set equal to or less than that described by the equation:
• 7+[9/1000]×L2
• where L2 is the adjusted load;
• and, wherein said film exhibits a load decay that is equal to or less than 20%.