Ethylene interpolymer products and films

Patent metadata

Field	Value
Publication number	US-10995166-B2
Application number	US-201715805268-A
Country	US
Kind code	B2
Filing date	Nov 7, 2017
Priority date	Nov 7, 2017
Publication date	May 4, 2021
Grant date	May 4, 2021

Abstract

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=(SCU−TU)/TU, where SCU is the amount of a side chain unsaturation per 100 carbons and TU 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 (Mw/Mn) from about 1.7 to about 25 and a Composition Distribution Breadth Index (CDBI50) from about 1% to about 98%.

First claim

We claim:

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.

Assignees

• Nova Chem Int Sa

Inventors

• Kazemi Niousha
• Kleczek Monika
• Konaganti Vinod
• Gillon Bronwyn
• Goyal Shivendra Kumar
• Sibtain Fazle
• Kasiri Sepideh
• Salomons Stephen
• Taylor Kenneth Edward
• Keshtkar Mehdi

Classifications

• C08F210/16 Primary

  Copolymers of ethene with alpha-alkenes, e.g. EP rubbers · CPC title

• C08L23/0815

  with aliphatic 1-olefins containing one carbon-to-carbon double bond · CPC title

• C08J2323/08

  Copolymers of ethene (C08J2323/16 takes precedence) · CPC title

• C08J5/18 Primary

  Manufacture of films or sheets · CPC title

• C08F2500/18

  Bulk density · CPC title