# US 2010/0168323 A1 · Propylene-based polymer and method for producing the same, and propylene-based resin composition > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2010/0168323 A1 - Document ID: US20100168323A1 - Status: Published application - Kind: A1 - Application number: 12/514,323 - Filed: 2007-11-16 - Published: 2010-07-01 - Earliest claimed: 2006-11-17 - Assignees: Japan Polypropylene Corporation - Inventors: Masaaki ITO; Hideshi Uchino; Kazuya Sakata; Masaru Aoki; Masato Nakano; Shinichi Kitade - Web page: https://patentgrep.com/patent/US20100168323A1 ## CPC - C08F 210/06: Propene - C08F 10/00: Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond - C08F 10/10: Isobutene - C08L 23/14: Copolymers of propene (C08L23/16 takes precedence) - C08F 4/65904: {in combination with another component of C08F4/64} - C08F 4/65912: {in combination with an organoaluminium compound} - C08F 4/65927: {two cyclopentadienyl rings being mutually bridged} - C08F 110/06: Propene - C08L 2205/02: containing two or more polymers of the same C08L -group - C08L 2314/06: Metallocene or single site catalysts - C08F: MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS - C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06) ## Abstract A propylene-based polymer comprising the following component (A) insoluble in p-xylene at 25° C. and component (B) soluble in p-xylene at 25° C., wherein (i) the weight average molecular weight (Mw) measured with GPC is 100,000 to 1,000,000, (ii) the content of the component insoluble in hot p-xylene is 0.3% by weight or lower, and (iii) the degree of strain hardening (λ max) in measurement of elongational viscosity is 2.0 or higher; and a method for producing the same, along with a resin composition comprising a propylene-ethylene copolymer (Z) in an amount of 50.0 to 99.9% by weight and a propylene-based polymer (M) in an amount of 0.1 to 50.0% by weight. Component (A): a component (CXIS) insoluble in p-xylene at 25° C., having requirements specified by (A1) to (A5). Component (B): a component (CXS) is soluble in p-xylene at 25° C., having requirements specified by (B1) to (B4). ## Claims ### Claim 1 A propylene-based polymer comprising component (A) insoluble in p-xylene at 25° C. and component (B) soluble in p-xylene at 25° C., wherein (i) a weight average molecular weight (Mw) measured with GPC is from 100,000 to 1,000,000, (ii) a content of a component insoluble in hot p-xylene is 0.3% by weight or lower, and (iii) a degree of strain hardening (λ max) in measurement of elongational viscosity is 2.0 or higher, wherein the component (A) is the component insoluble in p-xylene at 25° C. (CXIS) comprising following characteristics (A1) to (A5) wherein: (A1) a content thereof is 20% by weight or more and less than 95% by weight relative to total weight of the polymer; (A2) a weight average molecular weight (Mw) measured with GPC is 100,000 to 1,000,000; (A3) an isotactic triad fraction (mm) measured with 13C-NMR is 93% or more; (A4) a degree of strain hardening (λ max) in measurement of elongational viscosity is 2.0 or higher; and (A5) said component (A) insoluble in p-xylene at 25° C. (CXIS) comprises a propylene unit and an ethylene unit or an α-olefin unit, and the component (B) is the component soluble in p-xylene at 25° C. (CXS) comprising following characteristics (B1) to (B3) wherein: (B1) a content thereof is 5% by weight or more and less than 80% by weight relative to total weight of the polymer; (B2) a weight average molecular weight (Mw) measured with GPC is 100,000 to 1,000,000; and (B3) said component (B) soluble in p-xylene at 25° C. (CXS) comprises a propylene unit and an ethylene unit and/or an α-olefin unit. ### Claim 2 (depends on 1) The propylene-based polymer according to claim 1, wherein, said component (B) further comprises a characteristic (B4) wherein (B4) a degree of strain hardening (λ max) in measurement of elongational viscosity is equal to or higher than 2.0. ### Claim 3 (depends on 1) The propylene-based polymer according to claim 1, wherein the propylene-base polymer has a branched structure comprising a crystalline propylene polymer segment as a side chain, and an amorphous propylene copolymer segment as a main chain. ### Claim 4 (depends on 1) The propylene-based polymer according to claim 1, wherein said component (A) has a branched structure comprising a crystalline propylene polymer segment as a side chain, and an amorphous propylene copolymer segment as a main chain. ### Claim 5 (depends on 1) The propylene-based polymer according to claim 1, wherein said component (A) comprises at least one ethylene unit, and the ethylene content is 0.1 to 10% by weight. ### Claim 6 (depends on 1) The propylene-based polymer according to claim 1, wherein said component (B) comprises at least one ethylene unit, and the ethylene content is 10 to 60% by weight. ### Claim 7 (depends on 1) A method for producing the propylene-based polymer according to claim 1, wherein a catalyst comprises components (a), (b) and (c), comprising: (i) polymerizing propylene only, or propylene and at least one of ethylene and an α-olefin, wherein ethylene, the α-olefin or total amount of ethylene and the α-olefin is polymerized in an amount of 0 to 10% by weight relative to total monomer components; and (ii) polymerizing propylene and at least one of ethylene and the α-olefin, wherein ethylene, the α-olefin or total amount of ethylene and the α-olefin is polymerized in an amount of 10 to 90% by weight relative to total monomer components, wherein said components (a), (b) and (c) are: (a): A metallocene compound represented by the general formula (1) wherein each of R11 and R12 represents independently an alkyl group having carbon atoms of 1 to 6, an aryl group having carbon atoms of 6 to 16, an aryl group having a halogen and having carbon atoms of 6 to 16, a hetero cyclic group having nitrogen, oxygen or sulfur and having carbon atoms of 4 to 16, and at least one of R11 and R12 represents a hetero cyclic group having nitrogen, oxygen or sulfur and carbon atoms of 4 to 16. In addition, each of R13 and R14 represents independently an alkyl group having a halogen and carbon atoms of 1 to 6, an aryl group having carbon atoms of 6 to 16, an aryl group having a halogen and carbon atoms of 6 to 16, an aryl group having silicon and having carbon atoms of 6 to 16, and a hetero cyclic group having nitrogen, oxygen or sulfur and carbon atoms of 6 to 16. X11 and Y11 each independently represent a hydrogen atom, a halogen atom, a hydrocarbon group having carbon atoms of 1 to 20, a hydrocarbon group having silicon and carbon atoms of 1 to 20, a halogenated hydrocarbon group having carbon atoms of 1 to 20, a hydrocarbon group having oxygen and carbon atoms of 1 to 20, an amino group, or a hydrocarbon group having nitrogen and carbon atoms of 1 to 20; and Q11 represents a bivalent hydrocarbon group having carbon atoms of 1 to 20, a silylene group or a germylene group which may have a hydrocarbon group having carbon atoms of 1 to 20; (b): An ion-exchange layered silicate; and (c): An organoaluminum compound. ### Claim 8 (depends on 7) The method for producing the propylene-based polymer according to claim 7, wherein said (i) polymerizing propylene only, or propylene and at least one of ethylene and an α-olefin comprises bulk polymerizing using propylene as a solvent, or gas-phase polymerizing wherein each monomer is maintained in an gaseous state, and is said (ii) polymerizing propylene and at least one of ethylene and the α-olefin comprises gas-phase polymerizing. ### Claim 9 A resin composition comprising a propylene-ethylene copolymer component (Z) in an amount of 50.0 to 99.9% by weight, and a propylene-based polymer component (M) in an amount of 0.1 to 50.0% by weight, wherein the propylene-ethylene copolymer component (Z) is obtained by sequential production by a multi-stage polymerization method of a crystalline propylene polymer component and a propylene-ethylene random copolymer component, and has following (Z1) characteristics, wherein (Z1): an amount of the component (CXS-Z) soluble in p-xylene at 25° C. in the component (Z) is 5 to 50% by weight relative to total amount of the component (Z), and amount of the component (CXIS-Z) insoluble in p-xylene at 25° C. in the component (Z) is 50 to 95% by weight relative to total amount of the component (Z), and the propylene-based polymer component (M) is obtained by sequential production by a multi-stage polymerization method of a crystalline propylene polymer component and a propylene-ethylene random copolymer component, comprises a component (A) insoluble in p-xylene at 25° C. and a component (B) soluble in p-xylene at 25° C., has a structure wherein the crystalline propylene polymer segment and the amorphous propylene copolymer segment are chemically bonded, and has following (A1) and (B1) characteristics, wherein: (A1): an amount of the component (A) is 20 to 95% by weight relative to total amount of the component (M); and (B1): Amount an amount of the component (B) is 5 to 80% by weight relative to total amount of the component (M). ### Claim 10 (depends on 9) The resin composition according to claim 9, wherein said component (Z) is produced by using a Ziegler-Natta-based catalyst. ### Claim 11 (depends on 9) The resin composition according to claim 9, wherein chemical bond type of said component (M) is a branched structure comprising an amorphous propylene copolymer segment as a main chain, and a crystalline propylene polymer segment as a side chain. ### Claim 12 (depends on 9) The resin composition according to claim 9, wherein a degree of strain hardening (λ max) of said component (M) in measurement of elongational viscosity is 2.0 or higher. ### Claim 13 (depends on 9) The resin composition according to claim 9, wherein a content of said component (B) is 0.2 to 10% by weight relative to total amount of the composition. ### Claim 14 A resin composition comprising a propylene-ethylene copolymer component (Z) in an amount of 50.0 to 99.9% by weight, and a propylene-based polymer component (M) in an amount of 0.1 to 50.0% by weight, wherein the propylene-ethylene copolymer component (Z) is obtained by sequential production by a multi-stage polymerization method of a crystalline propylene polymer component and a propylene-ethylene random copolymer component, and has following (Z1) characteristics, wherein (Z1): an amount of the component (CXS-Z) soluble in p-xylene at 25° C. in the component (Z) is 5 to 50% by weight relative to total amount of the component (Z), and amount of the component (CXIS-Z) insoluble in p-xylene at 25° C. in the component (Z) is 50 to 95% by weight relative to total amount of the component (Z), and the propylene-based polymer component (M) is produced sequentially by a multi-stage polymerization method, wherein the propylene-based polymer component (M) comprises a component (A) insoluble in p-xylene at 25° C. comprising (A1) to (A4) characteristics, a component (B) soluble in p-xylene at 25° C. comprising (B1) to (B2) characteristics, and (M1) to (M3) characteristics, wherein: (M1): a weight average molecular weight (Mw) of the component (M), measured with GPC is 100,000 to 1,000,000, (M2): a content of component insoluble in hot p-xylene in the component (M) is 0.3% by weight or lower relative to total amount of the component (M), (M3): a degree of strain hardening (λ max) of said component (M) in measurement of elongational viscosity is 2.0 or higher, (A1): an amount of the component (A) is 20 to 95% by weight relative to total amount of the component (M), (A2): a weight average molecular weight (Mw) of the component (A) measured with GPC is 100,000 to 1,000,000, (A3): an isotactic triad fraction (mm) of the component (A), measured with 13C-NMR is 93% or more, and (A4): a degree of strain hardening (λ max) of the component (A), in measurement of elongational viscosity is 2.0 or higher. (B1): an amount of the component (B) is 5 to 80% by weight relative to total amount of the component (M), and (B2): a weight average molecular weight (Mw) of the component (B), measured with GPC, is 100,000 to 1,000,000. ### Claim 15 (depends on 14) The resin composition according to claim 14, wherein said component (B) comprises at least one ethylene unit, and the ethylene content is 10 to 60% by weight. ### Claim 16 (depends on 14) The resin composition according to claim 14, wherein, said component (B), further comprises a characteristic (B3) wherein (B3) the degree of strain hardening (λ max) in measurement of elongational viscosity is 2.0 or higher. ### Claim 17 (depends on 14) The resin composition according to claim 14, wherein a content of said component (B) is 0.2 to 10% by weight relative to total amount of the composition. ### Claim 18 (depends on 9) A resin composition comprising 0 to 70 parts by weight of ethylene/α-olefin-based elastomer or styrene-based elastomer, and 0 to 70 parts by weight of an inorganic filler, relative to 100 parts by weight of the resin composition according to claim 9. ### Claim 19 (depends on 1) A method comprising obtaining the propylene-based polymer according to claim 1, as an impact resistance modifier of the propylene-ethylene copolymer (Z) obtained by sequential production by a multi-stage polymerization method of a crystalline propylene polymer component and a propylene-ethylene random copolymer component, using a Ziegler-Natta catalyst. ### Claim 20 (depends on 14) A resin composition comprising 0 to 70 parts by weight of ethylene/α-olefin-based elastomer or styrene-based elastomer, and 0 to 70 parts by weight of an inorganic filler, relative to 100 parts by weight of the resin composition according to claim 14.