Ethylene interpolymer products and films
This disclosure relates to ethylene interpolymer compositions and films prepared therefrom. Specifically: ethylene interpolymer products having: a dimensionless Long Chain Branching Factor, LCBF, greater than or equal to 0.001; a residual catalytic metal of from ≥0.03 to ≤5 ppm of hafnium, and; a dimensionless unsaturation ratio, UR, of from ≥−0.40 to ≤0.06, wherein UR is defined by the following relationship; UR=(SC U −T U )/T U , where SC U is the amount of a side chain unsaturation per 100 carbons and T U is amount of a terminal unsaturation per 100 carbons, in said ethylene interpolymer product. The disclosed ethylene interpolymer products have a melt index from about 0.3 to about 500 dg/minute, a density from about 0.855 to about 0.975 g/cc, a polydispersity (M w /M n ) from about 1.7 to about 25 and a Composition Distribution Breadth Index (CDBI 50 ) from about 1% to about 98%.
1. An ethylene interpolymer product comprising at least one ethylene interpolymer, wherein the ethylene interpolymer product comprises:
a dimensionless Long Chain Branching Factor, LCBF, of greater than or equal to 0.001;
a residual catalytic metal of from ≥0.03 to ≤5 ppm of hafnium, wherein the residual catalytic metal is measured using neutron activation;
a dimensionless unsaturation ratio, UR, of from ≥−0.40 to ≤0.06, wherein the UR is defined by the following relationship;
UR=(SC U −T U )/ T U
wherein SC U is the amount of side chain unsaturation per 100 carbons and T U is the amount of terminal unsaturation per 100 carbons in the ethylene interpolymer product, as determined by ASTM D3124-98 and ASTM D6248-98; and
from 3.2 mole percent to 25 mole percent 1-octene.
2. The ethylene interpolymer product of claim 1 , wherein the ethylene interpolymer product comprises a first ethylene interpolymer, a second ethylene interpolymer, and optionally a third ethylene interpolymer.
3. The ethylene interpolymer product of claim 1 , wherein the ethylene interpolymer product has a melt index from 0.3 to 500 dg/minute and a density from 0.855 to 0.975 g/cc, wherein the melt index is measured according to ASTM D1238 (2.16 kg load and 190° C.) and the density is measured according to ASTM D792.
4. The ethylene interpolymer product of claim 1 , wherein the ethylene interpolymer product has a polydispersity, M w /M n , from 1.7 to 25, wherein the weight average molecular weight, M w , and the number average molecular weight, M n , are measured using conventional size exclusion chromatography.
5. The ethylene interpolymer product of claim 1 , wherein the ethylene interpolymer product has a CDBI 50 from 1% to 98%, wherein CDBI 50 is measured using CTREF.
6. The ethylene interpolymer product of claim 1 , wherein the ethylene interpolymer product is manufactured by a solution polymerization process.
7. The ethylene interpolymer product of claim 1 , wherein the ethylene interpolymer product is synthesized using at least one homogeneous catalyst formulation.
8. The ethylene interpolymer product of claim 7 , wherein the homogeneous catalyst formulation is a bridged metallocene catalyst formulation comprising a component A defined by Formula (I):
wherein:
M is Ti, Hf, or Zr;
G is C, Si, Ge, Sn, or Pb;
X is a halogen atom;
R 6 , at each occurrence, is independently selected from H, a C 1-20 hydrocarbyl radical, a C 1-20 alkoxy radical, or a C 6-10 aryl oxide radical, wherein these radicals may be linear, branched, or cyclic or further substituted with a halogen atom, a C 1-10 alkyl radical, a C 1-10 alkoxy radical, a C 6-10 aryl, or an aryloxy radical;
R 1 is H, a C 1-20 hydrocarbyl radical, a C 1-20 alkoxy radical, a C 6-10 aryl oxide radical, or an alkylsilyl radical containing at least one silicon atom and 3-30 carbon atoms;
R 2 and R 3 are independently selected from H, a C 1-20 hydrocarbyl radical, a C 1-20 alkoxy radical, a C 6-10 aryl oxide radical, or an alkylsilyl radical containing at least one silicon atom and 3-30 carbon atoms; and
R 4 and R 5 are independently selected from H, a C 1-20 hydrocarbyl radical, a C 1-20 alkoxy radical, a C 6-10 aryl oxide radical, or an alkylsilyl radical containing at least one silicon atom and 3-30 carbon atoms.
9. The ethylene interpolymer product of claim 1 , wherein the ethylene interpolymer comprises from 3.2 mole percent to 6 mole percent 1-octene.
10. The ethylene interpolymer product of claim 1 , wherein the ethylene interpolymer comprises from 3.7 mole percent to 6 mole percent 1-octene.
11. The ethylene interpolymer product of claim 1 , wherein the ethylene interpolymer comprises from 3.7 mole percent to 4.7 mole percent 1-octene.