# US 11,440,984 B2 · Olefin-based polymer

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- Number: US 11,440,984 B2
- Document ID: US11440984B2
- Status: Granted
- Kind: B2
- Application number: 16/769,814
- Filed: 2018-12-24
- Published: 2020-11-26
- Granted: 2022-09-13
- Earliest claimed: 2017-12-26
- Assignees: LG Chem, Ltd.
- Applicants: LG Chem, Ltd.
- Inventors: Sang Eun Park; Eun Jung Lee; Hyun Jin Ju; In Sung Park; Kyung Bok Bae; Choong Hoon Lee
- Web page: https://patentgrep.com/patent/US11440984B2

## CPC

- C08F 210/16: Copolymers of ethene with alpha-alkenes, e.g. EP rubbers
- C07F 7/28: Titanium compounds
- C08F 210/08: Butenes
- C08F 210/14: Monomers containing five or more carbon atoms
- C08F 4/65908: {in combination with an ionising compound other than alumoxane, e.g. (C6F5)4B-X+}
- C08F 4/65912: {in combination with an organoaluminium compound}
- C08F 210/02: Ethene
- C08F 2420/02: Cp or analog bridged to a non-Cp X anionic donor
- C08F 2420/06: Cp analog where at least one of the carbon atoms of the non-coordinating part of the condensed ring is replaced by a heteroatom
- C08F 2500/03: Narrow molecular weight distribution, i.e. Mw/Mn < 3
- C08F 2500/08: Low density, i.e. < 0.91 g/cm3
- C08F 2500/12: Melt flow index or melt flow ratio
- C08F: MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C07F: ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM (metal-containing porphyrins C07D487/22)

## Abstract

The present invention relates to an olefin-based polymer, which has (1) a density (d) ranging from 0.85 to 0.90 g/cc, (2) a melt index (MI, 190° C., 2.16 kg load conditions) ranging from 0.1 g/10 min to 15 g/10 min, (3) a molecular weight distribution (MWD) in a range of 1.0 to 3.0, and (4) a number average molecular weight (Mn) and a Z+1 average molecular weight (Mz+1) satisfying the Equation 1, {Mn/(Mz+1)}×100>15. The olefin-based polymer according to the present invention is a low-density olefin-based polymer and exhibits excellent tensile strength due to having improved molecular weight as compared to the flow index.

## Claims

### Claim 1

An olefin-based polymer, which has (1) a density (d) ranging from 0.85 to 0.89 g/cc, measured according to ASTM D-792, (2) a melt index (MI) ranging from 0.1 g/10 min to 15 g/10 min, measured at 190° C., 2.16 kg load conditions, (3) a molecular weight distribution (MWD) in a range of 1.0 to 3.0, and (4) a number average molecular weight (Mn) and a Z+1 average molecular weight (Mz+1) satisfying the following Equation 1:
{Mn/(Mz+1)}×100>15, [Equation 1]
wherein the olefin-based polymer is a copolymer of ethylene and an alpha-olefin comonomer having 3 to 12 carbon atoms.

### Claim 2 (depends on 1)

The olefin-based polymer according to claim 1, wherein the olefin-based polymer has (5) a weight average molecular weight (Mw) in a range of 10,000 g/mol to 500,000 g/mol.

### Claim 3 (depends on 1)

The olefin-based polymer according to claim 1, wherein the olefin-based polymer has (6) a number average molecular weight (Mn) in the range of 8,000 g/mol to 300,000 g/mol.

### Claim 4 (depends on 1)

The olefin-based polymer according to claim 1, wherein the olefin-based polymer has (7) a Z+1 average molecular weight (Mz+1) in a range of 50,000 g/mol to 1,500,000 g/mol.

### Claim 5 (depends on 1)

The olefin-based polymer according to claim 1, wherein the olefin-based polymer has (7) a Z+1 average molecular weight (Mz+1) in a range of 80,000 g/mol to 1,000,000 g/mol.

### Claim 6 (depends on 1)

The olefin-based polymer according to claim 1, wherein the olefin-based polymer has (8) I10/I2>7.91(MI2.16)−0.188.

### Claim 7 (depends on 1)

The olefin-based polymer according to claim 1, wherein the alpha-olefin comonomer includes any one or a mixture of two or more selected from the group consisting of propylene, 1-butene, 1-pentene, 4-methyl-1-pentene, 1-hexene, 1-heptene, 1-octene, 1-decene, 1-undecene, 1-dodecene, 1-tetradecene, 1-hexadecene, and 1-eicosene.

### Claim 8 (depends on 1)

The olefin-based polymer according to claim 1, wherein the alpha-olefin comonomer is comprised in an amount of from 5 wt % to 40 wt %, with respect to a total weight of the copolymer.

### Claim 9 (depends on 1)

The olefin-based polymer according to claim 1, wherein the olefin-based polymer is obtained by a preparation method including a step of polymerizing an olefin-based monomer in the presence of a catalyst composition for olefin polymerization including a transition metal compound represented by the following Formula 1:
in Formula 1,
R1 is hydrogen; an alkyl having 1 to 20 carbon atoms; a cycloalkyl having 3 to 20 carbon atoms; an alkenyl having 2 to 20 carbon atoms; an alkoxy having 1 to 20 carbon atoms; an aryl having 6 to 20 carbon atoms; an arylalkoxy having 7 to 20 carbon atoms; an alkylaryl having 7 to 20 carbon atoms; or an arylalkyl having 7 to 20 carbon atoms,
R2a to R2e each independently represent hydrogen; a halogen; an alkyl having 1 to 20 carbon atoms; a cycloalkyl having 3 to 20 carbon atoms; an alkenyl having 2 to 20 carbon atoms; an alkoxy having 1 to 20 carbon atoms; or an aryl having 6 to 20 carbon atoms,
R3 is hydrogen; a halogen; an alkyl having 1 to 20 carbon atoms; a cycloalkyl having 3 to 20 carbon atoms; an alkenyl having 2 to 20 carbon atoms; an aryl having 6 to 20 carbon atoms; an alkylaryl having 7 to 20 carbon atoms; an arylalkyl having 7 to 20 carbon atoms; an alkylamido having 1 to 20 carbon atoms; an arylamido having 6 to 20 carbon atoms; an alkylidene having 1 to 20 carbon atoms; or phenyl substituted with one or more selected from the group consisting of a halogen, an alkyl having 1 to 20 carbon atoms, a cycloalkyl having 3 to 20 carbon atoms, an alkenyl having 2 to 20 carbon atoms, an alkoxy having 1 to 20 carbon atoms, and an aryl having 6 to 20 carbon atoms,
R4 to R9 each independently represent hydrogen; a silyl; an alkyl having 1 to 20 carbon atoms;
a cycloalkyl having 3 to 20 carbon atoms; an alkenyl having 2 to 20 carbon atoms; an aryl having 6 to 20 carbon atoms; an alkylaryl having 7 to 20 carbon atoms; an arylalkyl having 7 to 20 carbon atoms; or a metalloid radical of a Group 14 metal substituted with a hydrocarbyl having 1 to 20 carbon atoms; and two or more adjacent ones of R6 to R9 are optionally connected to each other to form an aliphatic ring having 5 to 20 carbon atoms or an aromatic ring having 6 to 20 carbon atoms, wherein the aliphatic ring or aromatic ring is optionally substituted with a halogen, an alkyl having 1 to 20 carbon atoms, an alkenyl having 2 to 12 carbon atoms, or an aryl having 6 to 12 carbon atoms
Q is Si, or C,
M is a Group 4 transition metal,
X1 and X2 are each independently hydrogen; a halogen; an alkyl having 1 to 20 carbon atoms;
a cycloalkyl having 3 to 20 carbon atoms; an alkenyl having 2 to 20 carbon atoms; an aryl having 6 to 20 carbon atoms; an alkylaryl having 7 to 20 carbon atoms; an arylalkyl having 7 to 20 carbon atoms; an alkylamino having 1 to 20 carbon atoms; an arylamino having 6 to 20 carbon atoms; or an alkylidene having 1 to 20 carbon atoms.

### Claim 10 (depends on 9)

The olefin-based polymer according to claim 9, wherein in Formula 1,
R1 is hydrogen or an alkyl having 1 to 12 carbon atoms,
R2a to R2e each independently represent hydrogen; an alkyl having 1 to 12 carbon atoms; or an alkoxy having 1 to 12 carbon atoms,
R3 is hydrogen; an alkyl having 1 to 12 carbon atoms; or phenyl,
R4 and R5 each independently represent hydrogen; or an alkyl having 1 to 12 carbon atoms,
R6 to R9 each independently represent hydrogen or methyl,
Q is Si,
M is Ti, and
X1 and X2 each independently represent hydrogen or an alkyl having 1 to 12 carbon atoms.

### Claim 11 (depends on 9)

The olefin-based polymer according to claim 9, wherein the transition metal compound of Formula 1 comprises a compound represented by any one among the structures below:

### Claim 12 (depends on 9)

The olefin-based polymer according to claim 9, wherein the catalyst composition further includes one or more cocatalyst compounds represented by the following Formula 8, Formula 9 or Formula 10,
—[Al(R11)—O]a—, [Formula 8]
A(R11)3, [Formula 9]
[L-H]+[W(D)4]− or [L]+[W(D)4]−, [Formula 10]
in Formulas 8 to 10,
R11 is the same or different, and each independently selected from the group consisting of a halogen, a hydrocarbyl having 1 to 20 carbon atoms, and a hydrocarbyl having 1 to 20 carbon atoms substituted with a halogen,
A is aluminum or boron,
D is independently an aryl having 6 to 20 carbon atoms or an alkyl having 1 to 20 carbon atoms in which at least one hydrogen atom is substituted with a substituent selected from the group consisting of a halogen, a hydrocarbyl having 1 to 20 carbon atoms, an alkoxy having 1 to 20 carbon atoms, and an aryloxy having 6 to 20 carbon atoms,
H is a hydrogen atom,
L is a neutral Lewis base and [L-H]+ is a conjugated acid cation in [L-H]+[W(D)4]−, and [L]+ is a Lewis acid in [L]+[W(D)4]−,
W is a Group 13 element, and
a is an integer of 2 or more.

### Claim 13 (depends on 9)

The olefin-based polymer according to claim 9, wherein the polymerization of the olefin-based monomer is carried out at a temperature of about 25° C. to about 500° C., and a pressure of about 1 kgf/cm2 to about 100 kgf/cm2.