[특허]Polymer resins with improved processability and melt fracture characteristics

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B29D-022/00 C08F-010/00 C08F-010/02 B32B-001/08
출원번호	US-0778693 (2013-02-27)
등록번호	US-8815357 (2014-08-26)
발명자 / 주소	Inn, Yongwoo Yang, Qing
출원인 / 주소	Chevron Phillips Chemical Company LP
대리인 / 주소	Conley Rose, P.C.
인용정보	피인용 횟수 : 4 인용 특허 : 40

초록 ▼

A metallocene-catalyzed polymer comprising (i) a higher molecular weight component and (ii) a lower molecular weight component wherein the polymer has a polydispersity index of from about 10 to about 26; a zero shear viscosity of from about 5×105 Pa·s to about 2×1014 Pa·s and a smooth-to-matte trans

A metallocene-catalyzed polymer comprising (i) a higher molecular weight component and (ii) a lower molecular weight component wherein the polymer has a polydispersity index of from about 10 to about 26; a zero shear viscosity of from about 5×105 Pa·s to about 2×1014 Pa·s and a smooth-to-matte transition critical stress of from about 20 kPa to about 85 kPa at a shear rate of from about 1.5 s−1 to about 17 s−1. A dual metallocene catalyzed polyethylene comprising (i) a higher molecular weight component and (ii) a lower molecular weight component wherein the polymer has a polydispersity index of from about 10 to about 26; a zero shear viscosity of from about 5×105 Pa·s to about 2×1014 Pa·s and a smooth-to-matte transition stress of from about 20 kPa to about 85 kPa at a shear rate of from about 1.5 s−1 to about 17 s−1.

대표청구항 ▼

1. A metallocene-catalyzed polymer comprising (i) a higher molecular weight component and (ii) a lower molecular weight component wherein the polymer has a polydispersity index of from about 10 to about 26; a zero shear viscosity of from about 5×105 Pa·s to about 2×1014 Pa·s and a smooth-to-matte tr

1. A metallocene-catalyzed polymer comprising (i) a higher molecular weight component and (ii) a lower molecular weight component wherein the polymer has a polydispersity index of from about 10 to about 26; a zero shear viscosity of from about 5×105 Pa·s to about 2×1014 Pa·s and a smooth-to-matte transition critical stress of from about 20 kPa to about 85 kPa at a shear rate of from about 1.5 s−1 to about 17 s−1. 2. The polymer of claim 1 wherein the higher molecular weight component is present in an amount of from about 3 wt. % to about 30 wt. %. 3. The polymer of claim 1 wherein the lower molecular weight component is present in an amount of from about 70 wt. % to about 97 wt. %. 4. The polymer of claim 1 having a weight average molecular weight of from about 260 kg/mol to about 350 kg/mol. 5. The polymer of claim 1 having a number average molecular weight of from about 12 kg/mol to about 26 kg/mol. 6. The polymer of claim 1 having a z-average molecular weight of from about 1500 kg/mol to about 2500 kg/mol. 7. The polymer of claim 1 having a short-chain branching content of from about 0.5 SCB/1000C to about 3.5 SCB/1000C wherein from about 50% to about 80% of the short chain branches are located in the higher molecular weight component. 8. The polymer of claim 1 having a long-chain branching content of from about 0.002 branches per 1000 carbon to about 0.2 branches per 1000 carbon. 9. The polymer of claim 1 having a high load melt index of from about 5 to about 12. 10. The polymer of claim 1 having a CY-a parameter of from about 0.03 to about 0.4. 11. The polymer of claim 1 having a tau eta value of from about 7 s to about 2.0×105 s. 12. The polymer of claim 1 having a magnitude of slip-stick fracture of from about 200 psi to about 1200 psi. 13. The polymer of claim 1 having an N—100 value of from about 0.2 to about 0.5. 14. The polymer of claim 1 having a viscosity at 100 rad/s of from 2×103 Pa·s to about 2.4×103 Pa·s. 15. A composition comprising the polymer of claim 1 and a polymer processing aid. 16. The composition of claim 15 wherein the polymer processing aid comprises fluoroelastomers, polyethylene glycol, low molecular weight waxes, or combinations thereof. 17. An article made from the polymer of claim 1. 18. An article made from the composition of claim 15. 19. A dual metallocene catalyzed polyethylene comprising (i) a higher molecular weight component and (ii) a lower molecular weight component wherein the polymer has a polydispersity index of from about 10 to about 26; a zero shear viscosity of from about 5×105 Pa·s to about 2×1014 Pa·s and a smooth-to-matte transition stress of from about 20 kPa to about 85 kPa at a shear rate of from about 1. 5 s−1 to about 17 s−1. 20. A composition comprising the dual metallocene catalyzed polyethylene of claim 19 and a fluoroelastomer. 21. A pipe made from the composition of claim 20. 22. The polymer of claim 1 wherein the polymer is a copolymer of ethylene and 1-hexene.

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이 특허에 인용된 특허 (40) 인용/피인용 타임라인 분석

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Sherk Fred T. (Bartlesville OK) Inkrott Janet L. (Bartlesville OK), Diluent and inert gas recovery from a polymerization process.
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Yang, Qing; Jayaratne, Kumudini C.; Jensen, Michael D.; McDaniel, Max P.; Martin, Joel L.; Thorn, Matthew G.; Lanier, Jerry T.; Crain, Tony R., Dual metallocene catalysts for polymerization of bimodal polymers.
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Patsidis Konstantinos (Bayreuth DEX) Alt H. G. (Bayreuth OK DEX) Palackal Syriac J. (Bartlesville OK), Fluorene compounds and methods for making.
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Krishnaswamy, Rajendra K.; Yang, Qing, HDPE resins for use in pressure pipe and related applications.
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Schmid Michael (Bayreuth DEX) Alt Helmut G. (Bayreuth DEX) Welch M. Bruce (Bartlesville OK), High activity ethylene selective metallocenes.
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Hottovy John D. ; Hensley Harvey D. ; Przelomski David J. ; Cymbaluk Teddy H. ; Franklin ; III Robert K. ; Perez Ethelwoldo P., High solids slurry polymerization.
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Geerts Rolf L. (Bartlesville OK) Palackal Syriac J. (Bartlesville OK) Pettijohn Ted M. (Bartlesville OK) Infield Robert M. (Barnsdall OK), Metallocene catalyst systems, preparation, and use.
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Welch M. Bruce (Bartlesville OK) Alt Helmut G. (Bayreuth DEX) Peifer Bernd (Bayreuth DEX), Metallocene compounds and preparation thereof containing terminal alkynes.
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Peifer Bernd (Bayreuth DEX) Alt Helmut G. (Bayreuth DEX) Welch M. Bruce (Bartlesville OK), Metallocene preparation and use.
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Alt Helmut G. (Bayreuth DEX) Patsidis Konstantinos (Bayreuth OK DEX) Welch M. Bruce (Bartlesville OK) Geerts Rolf L. (Bartlesville OK) Peifer Bernd (Bayreuth OK DEX) Palackal Syriac J. (Bartlesville , Metallocenes and processes therefor and therewith.
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Welch, M. Bruce; Palackal, Syriac J.; Hauger, Bryan E.; Dockter, David W.; Koppl, Alexander; Alt, Helmut G., Metallocenes, polymerization catalyst systems, their preparation, and use.
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Burns David H. (Houston TX) Martin William E. (Houston TX), Method for controlling removal of polymerization reaction effluent.
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DesLauriers, Paul J.; Rohlfing, David C., Method for employing SEC-FTIR data to predict mechanical properties of polyethylene.
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Jenkins ; III John M. (So. Charleston WV) Jones Russell L. (Chapel Hill NC) Jones Thomas M. (So. Charleston WV) Beret Samil (Danville CA), Method for fluidized bed polymerization.
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Welch M. Bruce (Bartlesville OK) Alt Helmut G. (Bayreuth DEX) Peifer Bernd (Bayreuth OK DEX) Palackal Syriac J. (Bartlesville OK) Glass Gary L. (Dewey OK) Pettijohn Ted M. (Bartlesville OK) Hawley Gi, Method for making and using a supported metallocene catalyst system.
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Zenk Roland (Bayreuth DEX) Alt Helmut G. (Bayreuth OK DEX) Welch M. Bruce (Bartlesville OK) Palackal Syriac J. (Bartlesville OK), Method for preparing cyclopentadienyl-type ligands and metallocene compounds.
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Alt Helmut G. (Bayreuth DEX) Palackal Syriac J. (Bartlesville OK) Zenk Roland (Bayreuth DEX) Welch M. Bruce (Bartlesville OK) Schmid Michael (Bayreuth DEX), Organometallic fluorenyl compounds and use thereof in an alpha-olefin polymerization process.
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Alt Helmut G. (Bayreuth DEX) Palackal Syriac J. (Bayreuth DEX) Patsidis Konstantinos (Bayreuth OK DEX) Welch M. Bruce (Bartlesville OK) Geerts Rolf L. (Bartlesville OK) Hsieh Eric T. (Bartlesville OK, Organometallic fluorenyl compounds, preparation, and use.
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Zenk Roland (Bayreuth DEX) Alt Helmut G. (Bayreuth OK DEX) Welch M. Bruce (Bartlesville OK), Organometallic fluorenyl compounds, preparation, and use.
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Lee,Ki Soo; Lee,Choong Hoon; Lee,Sangwoo; Lee,Eunjung; Lee,Soojeong; Choi,Seungwoo, Polyethylene pipe having better melt processibility and high resistance to stress and method of preparing the same using metallocene catalyst.
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Yang,Qing; Jensen,Michael D.; Thorn,Matthew G.; McDaniel,Max P.; Martin,Joel L.; Crain,Tony R., Polymerization catalysts for producing high melt index polymers without the use of hydrogen.
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Alt Helmut G. (Bayreuth DEX) Patsidis Konstantinos (Bayreuth DEX) Welch M. Bruce (Bartlesville OK) Chu Peter P. (Bartlesville OK), Process of polymerizing olefins using diphenylsilyl or dimethyl tin bridged 1-methyl fluorenyl metallocenes.
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이 특허를 인용한 특허 (4) 인용/피인용 타임라인 분석

Rohatgi, Vivek; Inn, Yongwoo; Sukhadia, Ashish M.; Yang, Qing; DesLauriers, Paul J., Polymers with improved processability for pipe applications.
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Rohatgi, Vivek; Inn, Yongwoo; Sukhadia, Ashish M.; Yang, Qing; DesLauriers, Paul J., Polymers with improved processability for pipe applications.
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Canich, Jo Ann M.; Izmer, Vyatcheslav V.; Kononovich, Dmitry S.; Voskoboynikov, Alexander Z., Tetrahydro-as-indacenyl catalyst composition, catalyst system, and processes for use thereof.
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Canich, Jo Ann M.; Atienza, Crisita Carmen H.; Izmer, Vyatcheslav V.; Kononovich, Dmitry S.; Voskoboynikov, Alexander Z., Tetrahydroindacenyl catalyst composition, catalyst system, and processes for use thereof.
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