# US 2014/0194277 A1 · Ethylene-based polymer, polyethylene-based resin composition and use thereof, catalyst component for olefin polymerization, olefin polymerization catalyst containing the component, and method for producing ethylene-based polymer by using the catalyst

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 2014/0194277 A1
- Document ID: US20140194277A1
- Status: Published application
- Kind: A1
- Application number: 14/008,965
- Filed: 2012-03-29
- Published: 2014-07-10
- Earliest claimed: 2011-03-30
- Assignees: Japan Polyethylene Corporation
- Inventors: Yoshiyuki Ishihama; Ryousuke Asakawa; Tsutomu Sakuragi; Tetsurou Fukuda; Kazuya Sakata; Masaru Aoki; Kenji Kawagishi; Keiichi Yoshimoto
- Web page: https://patentgrep.com/patent/US20140194277A1

## CPC

- C08F 210/16: Copolymers of ethene with alpha-alkenes, e.g. EP rubbers
- C08F 4/65927: {two cyclopentadienyl rings being mutually bridged}
- C08F 10/02: Ethene
- C08J 5/18: Manufacture of films or sheets
- C08L 23/0815: {with aliphatic 1-olefins containing one carbon-to-carbon double bond}
- 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 4/65916: {supported on a carrier, e.g. silica, MgCl2, polymer}
- C08L 2205/025: containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
- C08L 2314/06: Metallocene or single site catalysts
- C08F: MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08J: WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H (working, e.g. shaping, of plastics B29)
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)

## Abstract

An object of the present invention is to provide a polyethylene-based resin composition excellent in the moldability and at the same time, excellent in the balance between impact strength and stiffness as well as in the transparency, and a molded product and a film, which are obtained by the molding of the polyethylene-based resin composition. The polyethylene-based resin composition of the present invention comprises from 41 to 99 wt % of (A) an ethylene-based polymer satisfying specific conditions and from 1 to 59 wt % of (B) an ethylene-based polymer satisfying specific conditions, wherein MFR of the composition as a whole is from 0.05 to 50 g/10 min and the density is from 0.910 to 0.960 g/cm3.

## Claims

### Claim 1

An ethylene-based polymer satisfying the following condition (B-1′) to condition (B-6):
(B-1′) MFRB=0.001 to 200 g/10 min,
(B-2″) DensityB=0.880 to 0.970 g/cm3,
(B-3) [Mw/Mn]B=2.0 to 10.0,
(B-4′) in a double logarithmic plot of elongation viscosity η(t) (unit. Pa·sec) and elongation time t (unit. sec) measured at a temperature of 170° C. and an elongation strain rate of 2 (unit. 1/sec), assuming that the maximum elongation viscosity after strain hardening is ηB;Max(t1) and the approximate straight line of the elongation viscosity before hardening is ηB;Linear(t), the degree of strain hardening [λmax(2.0)]B defined by ηB;Max(t1)/ηB;Linear(t1) is from 1.2 to 30.0,
(B-5) the ratio [λmax(2.0)]B/[λmax(0.1)]B of [λmax(2.0)]B defined in the same manner as in the condition (B-4′) and [λmax(0.1)]B measured similarly by setting the elongation strain rate to 0.1 (unit. 1/sec) is from 1.2 to 10.0, and
(B-6) the polymer is produced by an ethylene polymerization reaction in the presence of a transition metal-containing catalyst.

### Claim 2 (depends on 1)

The ethylene-based polymer as claimed in claim 1, further satisfying at least one of the following condition (B-7) and condition (B-8):
(B-7) the branching index (gC′) at a molecular weight of 1,000,000 as measured by a GPC measurement apparatus combining a differential refractometer, a viscosity detector and a light scattering detector is from 0.30 to 0.70, and
(B-8) the content (WC) of components having a molecular weight of 1,000,000 or more as measured by a GPC measurement apparatus combining a differential refractometer, a viscosity detector and a light scattering detector is from 0.01 to 30%.

### Claim 3 (depends on 1)

A polyethylene-based resin composition, comprising:
(A) from 41 to 99 wt % of an ethylene-based polymer satisfying the following condition (A-1) to condition (A-4); and
(B) from 1 to 59 wt % of the ethylene-based polymer claimed in claim 1,
wherein:
MFR of the composition as a whole is from 0.05 to 50 g/10 min and the density is from 0.910 to 0.960 g/cm3;
Conditions of ethylene-based polymer (A):
(A-1) MFRA=0.3 to 100 g/10 min,
(A-2) DensityA=0.915 to 0.970 g/cm3,
(A-3) [Mw/Mn]A=2.0 to 10.0, and
(A-4) in a double logarithmic plot of elongation viscosity 1(t) (unit. Pa·sec) and elongation time t (unit. sec) measured at a temperature of 170° C. and an elongation strain rate of 2 (unit. 1/sec), assuming that the maximum elongation viscosity after strain hardening is ηA;Max(t1) and the approximate straight line of the elongation viscosity before hardening is ηA;Linear(t), the degree of strain hardening [λmax(2.0)]A defined by ηA;Max(t1)/ηA;Linear(t1) is from 1.0 to 2.0.

### Claim 4 (depends on 3)

The polyethylene-based resin composition as claimed in claim 3, wherein said ethylene-based polymer (B) satisfies the following condition (B-1) to condition (B-6):
Conditions of ethylene-based polymer (B):
(B-1) MFRB=0.01 to 1.5 g/10 min and 100>MFRA/MFRB>1.0,
(B-2) DensityB=0.880 to 0.940 g/cm3,
(B-3) [Mw/Mn]B=2.0 to 10.0,
(B-4) [λmax(2.0)]B defined in the same manner as in the condition (A-4) of claim 3 is from 1.2 to 20.0 and 20>[λmax(2.0)]B/[max(2.0)]A>1.0,
(B-5) the ratio [λmax(2.0)]B/[λmax(0.1)]B of [λmax(2.0)]B defined in the same manner as in the condition (A-4) of claim 3 and [λmax(0.1)]B measured similarly by setting the elongation strain rate to 0.1 (unit. 1/sec) is from 1.2 to 10.0, and
(B-6) the polymer is produced by an ethylene polymerization reaction in the presence of a transition metal-containing catalyst.

### Claim 5 (depends on 3)

The polyethylene-based resin composition as claimed in claim 3, wherein said ethylene-based polymer (B) further satisfies the following condition (B-2′):
1.070>densityA/densityB>0.990. (B-2′)

### Claim 6 (depends on 3)

The polyethylene-based resin composition as claimed in claim 3, wherein said ethylene-based polymer (A) is an ethylene polymer or ethylene.α-olefin copolymer produced by homopolymerization of ethylene or copolymerization with an α-olefin caused by a Ziegler-Natta catalyst produced with a magnesium compound and a titanium compound.

### Claim 7 (depends on 3)

A molded product obtained by an injection molding, compression-injection molding, rotational molding, extrusion molding, hollow molding or blow molding of the polyethylene-based resin composition claimed in claim 3.

### Claim 8 (depends on 3)

A film obtained by an extrusion molding, hollow molding, blow molding or inflation molding of the polyethylene-based resin composition claimed in claim 3.

### Claim 9

An olefin polymerization catalyst component, comprising the following component (A-1b) and component (A-2b):
Component (A-1b). a metallocene compound represented by the following formula (1b):
wherein:
M1b represents any one transition metal of Ti, Zr and Hf;
each of X1b and X2b independently represents a hydrogen atom, a halogen atom, a hydrocarbon group having a carbon number of 1 to 20, a hydrocarbon group containing an oxygen atom or a nitrogen atom and having a carbon number of 1 to 20, a hydrocarbon group-substituted amino group having a carbon number of 1 to 20, or an alkoxy group having a carbon number of 1 to 20;
each of Q1b and Q2b independently represents a carbon atom, a silicon atom or a germanium atom;
each R1b independently represents a hydrogen atom or a hydrocarbon group having a carbon number of 1 to 10 and at least two members out of four R1b optionally combine to form a ring together with Q1b and Q2b;
mb is 0 or 1 and when mb is 0, Q1b is bonded directly to the conjugated 5-membered ring including R2b and R3b; and
each of R2b, R3b and R4b independently represents a hydrogen atom, a halogen atom, a hydrocarbon group having a carbon number of 1 to 20, a silicon-containing hydrocarbon group containing from 1 to 6 silicons and having a carbon number of 1 to 18, a halogen-containing hydrocarbon group having a carbon number of 1 to 20, a hydrocarbon group containing an oxygen atom or a sulfur atom and having a carbon number of 1 to 40, or a silyl group substituted with a hydrocarbon group having a carbon number of 1 to 40 and out of R2b, R3b and R4b, only either one pair of adjacent R3b and R3b and adjacent R2b and R3b may form a ring together with the carbon atoms to which the pair is bonded; and
Component (A-2b). a metallocene compound represented by the following formula (2b):
wherein:
M2b represents any one transition metal of Ti, Zr and Hf;
each of X11b and X12b independently represents a hydrogen atom, a halogen atom, a hydrocarbon group having a carbon number of 1 to 20, a hydrocarbon group containing an oxygen atom or a nitrogen atom and having a carbon number of 1 to 20, a hydrocarbon group-substituted amino group having a carbon number of 1 to 20, or an alkoxy group having a carbon number of 1 to 20;
Q11b represents a carbon atom, a silicon atom or a germanium atom;
each R11b independently represents a hydrogen atom or a hydrocarbon group having a carbon number of 1 to 10 and two R11b may combine with each other to form a ring together with Q1b;
each of R12b, R14b and R15b independently represents an atom or a group selected from a hydrogen atom, a halogen atom, a hydrocarbon group having a carbon number of 1 to 20, a silicon-containing hydrocarbon group containing from 1 to 6 silicons and having a carbon number of 1 to 18, a halogen-containing hydrocarbon group having a carbon number of 1 to 20, a hydrocarbon group containing an oxygen atom or a sulfur atom and having a carbon number of 1 to 40, and a silyl group substituted with a hydrocarbon group having a carbon number of 1 to 40, provided that at least one member is not a hydrogen atom;
each R13b independently represents a hydrocarbon group having a carbon number of 1 to 20, a silicon-containing hydrocarbon group containing from 1 to 6 silicons and having a carbon number of 1 to 18, a halogen-containing hydrocarbon group having a carbon number of 1 to 20, a hydrocarbon group containing an oxygen atom or a sulfur atom and having a carbon number of 1 to 40, or a silyl group substituted with a hydrocarbon group having a carbon number of 1 to 40; and
out of R12b, R13b, R14b and R15b, any only one pair of adjacent R12b and R12b, adjacent R13b and R13b and adjacent R12b and R13b and any only one pair of adjacent R14b and R14b, adjacent R15b and R15b and adjacent R14b and R15b may form a ring together with the carbon atoms to which the pair is bonded.

### Claim 10

An olefin polymerization catalyst component, comprising a metallocene compound represented by the following formula (1c):
wherein:
M1c represents any one transition metal of Ti, Zr and Hf;
each of X1c and X2c independently represents a hydrogen atom, a halogen atom, a hydrocarbon group having a carbon number of 1 to 20, a hydrocarbon group containing an oxygen atom or a nitrogen atom and having a carbon number of 1 to 20, a hydrocarbon group-substituted amino group having a carbon number of 1 to 20, or an alkoxy group having a carbon number of 1 to 20;
each of Q1c and Q2c independently represents a carbon atom, a silicon atom or a germanium atom;
each R1c independently represents a hydrogen atom or a hydrocarbon group having a carbon number of 1 to 10 and at least two members out of four R1c may combine to form a ring together with Q1c and Q2c;
mc is 0 or 1 and when mc is 0, Q1c is bonded directly to the conjugated 5-membered ring including R2c;
each of R2c and R4c independently represents a hydrogen atom, a halogen atom, a hydrocarbon group having a carbon number of 1 to 20, a silicon-containing hydrocarbon group containing from 1 to 6 silicons and having a carbon number of 1 to 18, a halogen-containing hydrocarbon group having a carbon number of 1 to 20, a hydrocarbon group containing an oxygen atom and having a carbon number of 1 to 20, or a hydrocarbon group-substituted silyl group having a carbon number of 1 to 20; and
R3c represents a substituted aryl group represented by the following formula (1-ac)]:
wherein:
Y1c represents an atom of Group 14, Group 15 or Group 16 of the periodic table;
each of R5c, R6c, R7c, R8c and R9c independently represents a hydrogen atom, a fluorine atom, a chlorine atom, a bromine atom, a hydrocarbon group having a carbon number of 1 to 20, a hydrocarbon group containing oxygen or nitrogen and having a carbon number of 1 to 20, a hydrocarbon group-substituted amino group having a carbon number of 1 to 20, an alkoxy group having a carbon number of 1 to 20, a silicon-containing hydrocarbon group containing from 1 to 6 silicons and having a carbon number of 1 to 18, a halogen-containing hydrocarbon group having a carbon number of 1 to 20, or a hydrocarbon group-substituted silyl group having a carbon number of 1 to 20;
adjacent groups of R5c, R6c, R7c, R8c and R9c may combine with each other to form a ring together with the atoms bonded to these groups;
nc is 0 or 1 and when nc is 0, the substituent R5c is not present on Y1c; and
pc is 0 or 1 and when pc is 0, the carbon atom to which R7c is bonded and the carbon atom to which R9c is bonded are bonded directly;
provided that when Y1c is a carbon atom, at least one of R5c, R6c, R7c, R8c and R9c is not a hydrogen atom.

### Claim 11 (depends on 9)

An olefin polymerization catalyst, comprising the olefin polymerization catalyst component claimed in claim 9.

### Claim 12 (depends on 1)

A production method of an ethylene-based polymer, the method comprising producing an ethylene-based polymer satisfying at least the condition (B-4′) among the conditions of claim 1 in the presence of an olefin polymerization catalyst containing the following components (A) and (B):
Component (A). at least any one of the following catalyst components (A-i) to (A-iii):
(A-i) an olefin polymerization catalyst component, comprising the following component (A-1b) and component (A-2b):
Component (A-1b). a metallocene compound represented by the following formula (1b):
wherein:
M1b represents any one transition metal of Ti, Zr and Hf;
each of X1b and X2b independently represents a hydrogen atom, a halogen atom, a hydrocarbon group having a carbon number of 1 to 20, a hydrocarbon group containing an oxygen atom or a nitrogen atom and having a carbon number of 1 to 20, a hydrocarbon group-substituted amino group having a carbon number of 1 to 20, or an alkoxy group having a carbon number of 1 to 20;
each of Q1b and Q2b independently represents a carbon atom, a silicon atom or a germanium atom;
each R1b independently represents a hydrogen atom or a hydrocarbon group having a carbon number of 1 to 10 and at least two members out of four R1b optionally combine to form a ring together with Q1b and Q2b;
mb is 0 or 1 and when mb is 0, Q1b is bonded directly to the conjugated 5-membered ring including R2b and R3b and
each of R2b, R3b and R4b independently represents a hydrogen atom, a halogen atom, a hydrocarbon group having a carbon number of 1 to 20, a silicon-containing hydrocarbon group containing from 1 to 6 silicons and having a carbon number of 1 to 18, a halogen-containing hydrocarbon group having a carbon number of 1 to 20, a hydrocarbon group containing an oxygen atom or a sulfur atom and having a carbon number of 1 to 40, or a silyl group substituted with a hydrocarbon group having a carbon number of 1 to 40 and out of R2b, R3b and R4b, only either one pair of adjacent R3b and R3b and adjacent R2b and R3b may form a ring together with the carbon atoms to which the pair is bonded; and
Component (A-2b). a metallocene compound represented by the following formula (2b):
wherein:
M2b represents any one transition metal of Ti, Zr and Hf;
each of X1b and X12b independently represents a hydrogen atom, a halogen atom, a hydrocarbon group having a carbon number of 1 to 20, a hydrocarbon group containing an oxygen atom or a nitrogen atom and having a carbon number of 1 to 20, a hydrocarbon group-substituted amino group having a carbon number of 1 to 20, or an alkoxy group having a carbon number of 1 to 20;
Q11b represents a carbon atom, a silicon atom or a germanium atom;
each R11b independently represents a hydrogen atom or a hydrocarbon group having a carbon number of 1 to 10 and two R11b may combine with each other to form a ring together with Q11b;
each of R12b, R14b and R15b independently represents an atom or a group selected from a hydrogen atom, a halogen atom, a hydrocarbon group having a carbon number of 1 to 20, a silicon-containing hydrocarbon group containing from 1 to 6 silicons and having a carbon number of 1 to 18, a halogen-containing hydrocarbon group having a carbon number of 1 to 20, a hydrocarbon group containing an oxygen atom or a sulfur atom and having a carbon number of 1 to 40, and a silyl group substituted with a hydrocarbon group having a carbon number of 1 to 40, provided that at least one member is not a hydrogen atom;
each R13b independently represents a hydrocarbon group having a carbon number of 1 to 20, a silicon-containing hydrocarbon group containing from 1 to 6 silicons and having a carbon number of 1 to 18, a halogen-containing hydrocarbon group having a carbon number of 1 to 20, a hydrocarbon group containing an oxygen atom or a sulfur atom and having a carbon number of 1 to 40, or a silyl group substituted with a hydrocarbon group having a carbon number of 1 to 40; and
out of R12b, R13b, R14b and R15b, any only one pair of adjacent R12b and R12b, adjacent R13b and R13b and adjacent R12b and R13b and any only one pair of adjacent R14b and R14b adjacent R15b and R15b and adjacent R14b and R15b may form a ring together with the carbon atoms to which the pair is bonded;
(A-ii) the olefin polymerization catalyst component comprising a metallocene compound represented by the following formula (1c):
wherein:
M1c represents any one transition metal of Ti, Zr and Hf;
each of X1c and X2c independently represents a hydrogen atom, a halogen atom, a hydrocarbon group having a carbon number of 1 to 20, a hydrocarbon group containing an oxygen atom or a nitrogen atom and having a carbon number of 1 to 20, a hydrocarbon group-substituted amino group having a carbon number of 1 to 20, or an alkoxy group having a carbon number of 1 to 20;
each of Q1c and Q2c independently represents a carbon atom, a silicon atom or a germanium atom;
each R1c independently represents a hydrogen atom or a hydrocarbon group having a carbon number of 1 to 10 and at least two members out of four R1c may combine to form a ring together with Q1c and Q2c;
mc is 0 or 1 and when mc is 0, Q1c is bonded directly to the conjugated 5-membered ring including R2c;
each of R2c and R4c independently represents a hydrogen atom, a halogen atom, a hydrocarbon group having a carbon number of 1 to 20, a silicon-containing hydrocarbon group containing from 1 to 6 silicons and having a carbon number of 1 to 18, a halogen-containing hydrocarbon group having a carbon number of 1 to 20, a hydrocarbon group containing an oxygen atom and having a carbon number of 1 to 20, or a hydrocarbon group-substituted silyl group having a carbon number of 1 to 20; and
R3c represents a substituted aryl group represented by the following formula (1-ac)]:
wherein:
Y1c represents an atom of Group 14, Group 15 or Group 16 of the periodic table;
each of R5c, R6c, R7c, R8e and R9c independently represents a hydrogen atom, a fluorine atom, a chlorine atom, a bromine atom, a hydrocarbon group having a carbon number of 1 to 20, a hydrocarbon group containing oxygen or nitrogen and having a carbon number of 1 to 20, a hydrocarbon group-substituted amino group having a carbon number of 1 to 20, an alkoxy group having a carbon number of 1 to 20, a silicon-containing hydrocarbon group containing from 1 to 6 silicons and having a carbon number of 1 to 18, a halogen-containing hydrocarbon group having a carbon number of 1 to 20, or a hydrocarbon group-substituted silyl group having a carbon number of 1 to 20;
adjacent groups of R5c, R6c, R7c, R8c and R9c may combine with each other to form a ring together with the atoms bonded to these groups;
nc is 0 or 1 and when nc is 0, the substituent R5c is not present on Y1c; and
pc is 0 or 1 and when pc is 0, the carbon atom to which R7c is bonded and the carbon atom to which R9c is bonded are bonded directly;
provided that when Y1c is a carbon atom, at least one of R5c, R6c, R7c, R8c and R9c is not a hydrogen atom, and
(A-iii) an olefin polymerization catalyst component containing a metallocene compound represented by the following formula (1d):
wherein:
M1d represents any one transition metal of Ti, Zr and Hf;
each of XId and X2d independently represents a hydrogen atom, a halogen atom, a hydrocarbon group having a carbon number of 1 to 20, a hydrocarbon group containing an oxygen atom or a nitrogen atom and having a carbon number of 1 to 20, a hydrocarbon group-substituted amino group having a carbon number of 1 to 20, or an alkoxy group having a carbon number of 1 to 20;
each of Q1d and Q2d independently represents a carbon atom, a silicon atom or a germanium atom; each R1d independently represents a hydrogen atom or a hydrocarbon group having a carbon number of 1 to 10 and at least two members out of four R1d may combine to form a ring together with Q1d and Q2d;
md is 0 or 1 and when md is 0, Q1d is bonded directly to the conjugated 5-membered ring including R2d and R3d;
each of R2d and R3d represents a hydrogen atom, a halogen atom, a hydrocarbon group having a carbon number of 1 to 20, a silicon-containing hydrocarbon group containing from 1 to 6 silicons and having a carbon number of 1 to 18, a halogen-containing hydrocarbon group having a carbon number of 1 to 20, a hydrocarbon group containing an oxygen atom and having a carbon number of 1 to 20, or a hydrocarbon group-substituted silyl group having a carbon number of 1 to 20, provided that at least one R2d is not a hydrogen atom;
R4d represents a saturated or unsaturated divalent hydrocarbon group having a carbon number of 4 or 5 for forming a condensed ring with the 5-membered ring to which R4d is bonded;
R5d is an atom or a group bonded to a carbon atom of R4d and each independently represents a hydrogen atom, a halogen atom, a hydrocarbon group having a carbon number of 1 to 20, a silicon-containing hydrocarbon group containing from 1 to 6 silicons and having a carbon number of 1 to 18, a halogen-containing hydrocarbon group having a carbon number of 1 to 20, a hydrocarbon group containing an oxygen atom and having a carbon number of 1 to 20, or a hydrocarbon group-substituted silyl group having a carbon number of 1 to 20; and
nd represents an integer of 0 to 10 and when nd is 2 or more, at least two R5d may form a ring together with the carbon atoms to which R5d are bonded, and
Component (B). a compound capable of reacting with a metallocene compound of the component (A) to produce a cationic metallocene compound.

### Claim 13 (depends on 12)

An ethylene-based polymer, which is produced by the production method of claim 12, wherein the ethylene-based polymer satisfies the following condition (B-1′) to condition (B-6):
(B-1′) MFRB=0.001 to 200 g/10 min,
(B-2″) DensityB=0.880 to 0.970 g/cm3,
(B-3) [Mw/Mn]B=2.0 to 10.0,
(B-4′) in a double logarithmic plot of elongation viscosity r(t) (unit. Pa·sec) and elongation time t (unit. sec) measured at a temperature of 170° C. and an elongation strain rate of 2 (unit. 1/sec), assuming that the maximum elongation viscosity after strain hardening is ηB;Max(t1) and the approximate straight line of the elongation viscosity before hardening is ηB;Linear(t), the degree of strain hardening [λmax(2.0)]B defined by ηB;Max(t1)/ηB;Linear(t1) is from 1.2 to 30.0,
(B-5) the ratio [λmax(2.0)]B/[λmax(0.1)]B of [λmax(2.0)]B defined in the same manner as in the condition (B-4′) and [max(0.1)]B measured similarly by setting the elongation strain rate to 0.1 (unit. 1/sec) is from 1.2 to 10.0, and (B-6) the polymer is produced by an ethylene polymerization reaction in the presence of a transition metal-containing catalyst.

### Claim 14 (depends on 12)

The polyethylene-based resin composition of claim 12, comprising
(A) from 41 to 99 wt % of an ethylene-based polymer satisfying the following condition (A-1) to condition (A-4); and
(B) from 1 to 59 wt % of the ethylene-based polymer,
wherein:
MFR of the composition as a whole is from 0.05 to 50 g/10 min and the density is from 0.910 to 0.960 g/cm3;
Conditions of ethylene-based polymer (A):
(A-1) MFRA=0.3 to 100 g/10 min,
(A-2) DensityA=0.915 to 0.970 g/cm3,
(A-3) [Mw/Mn]A=2.0 to 10.0, and
(A-4) in a double logarithmic plot of elongation viscosity η(t) (unit. Pa·sec) and elongation time t (unit. sec) measured at a temperature of 170° C. and an elongation strain rate of 2 (unit. 1/sec), assuming that the maximum elongation viscosity after strain hardening is ηA;Max(t1) and the approximate straight line of the elongation viscosity before hardening is ηA;Linear(t), the degree of strain hardening [λmax(2.0)]A defined by ηA;Max(t1)/ηA;Linear(t1) is from 1.0 to 2.0.