Propylene diene copolymers

A propylene copolymer, comprising:

• propylene and 1,9-decadiene, said copolymer having:
• a weight average molecular weight in the range from 100,000 to 750,000;
• a melt flow rate in the range from 1 dg/min to 35 dg/min;
• a crystallization temperature in the range from 118° C. to 126° C.;
• a melting point selected from one of less than 160° C. or at least two crystalline populations wherein the melting point ranges for one crystalline population are distinguishable from the melting point range of another crystalline population by a melting point range from 1° C. to 8° C., wherein in said at least two crystalline populations one of said crystalline populations has a melting point from 152° C. to 158° C. and another said crystalline population has a melting point from 142° C. to 148° C.;
• a hexane extractable level (as measured by 21 CFR 177.1520(d)(3)(i)) of the copolymer of less than 1.0 wt %;
• and
• a ratio of extensional viscosity at break to linear viscosity of at least 3.5 at strain rates from 0.1 second−1 to 1.0 second−1;
• and,
• a recoverable compliance in the range of from 7 to 42 cm2/dyne.

A propylene copolymer, comprising:

• (a) from 90 to 99.995 weight percent propylene;
• (b) from 0.005 to 0.0375 weight percent of an α,ω diene selected from one of 1,7-octadiene or 1,9-decadiene, wherein said copolymer has:
• a weight average molecular weight in the range from 100,000 to 750,000;
• a melt flow rate in the range from 1 dg/min to 35 dg/min;
• a crystallization temperature in the range from 118° C. to 126° C.;
• a melting point of less than 160° C.;
• a recoverable compliance in the range of from 7 to 17 cm2/dyne.

A copolymer comprising

• (a) from 90 to 99.999 weight percent of propylene units,
• (b) from 0.01 to 8 weight percent ethylene units,
• (c) from 0.001 to 2.000 weight percent α,ω-diene units,
• wherein the copolymer has
• a weight average molecular weight in the range from 50,000 to 2,000,000,
• a crystallization temperature in the range from 118° C. to 135° C. and
• a melt flow rate in the range from 0.1 dg/min to 100 dg/min.

A copolymer comprising:

• (a) from 90 to 99.999 weight percent of olefin units and
• (b) from 0.001 to 2.000 weight percent of α,ω-diene units
• wherein the copolymer has
• a weight average molecular weight in a range from 50,000 to 2,000,000;
• a melt flow rate in a range from 0.1 dg/min to 100 dg/min;
• the copolymer has at least two crystalline populations wherein one of the crystalline populations has a first melting point in a first melting point range and another crystalline population has a second melting point in a second melting point range and wherein the first melting point range is distinguishable from the second melting point range by 1° C. to 8° C.

A copolymer comprising:

• a) from 90 to 99.999 weight percent of olefin units and
• b) from 0.001 to 2.000 weight percent of α,ω-diene units
• wherein the copolymer has
• a weight average molecular weight in a range from 50,000 to 2,000,000;
• a melt flow rate in a range from 0.1 dg/min to 100 dg/min;
• the copolymer has one crystalline population having a melting point in the range from 152° C. to 158° C. and another crystalline population having a melting point in the range from 142° C. to 148° C.

A propylene copolymer, comprising:

• a) propylene;
• b) olefin units other than propylene;
• c) α,ω diene units;
• wherein said propylene copolymer has:
• a weight average molecular weight in the range from 50,000 to 2,000,000;
• a crystallization temperature in the range from 115° C. to 135° C.;
• a melt flow rate in the range from 0.1 dg/min to 100 dg/min;
• a melting point less than 165° C.;
• a hexane extractable level (as measured by 21 CFR 177.1520(d)(3)(i)) of the copolymer of less than 2.0 wt %;
• a ratio of extensional viscosity at break to linear viscosity of at least 2.5 at strain rates from 0.1 second−1 to 1.0 second−1;
• and
• a recoverable compliance in the range of from 7 to 42 cm2/dyne.