IPC분류정보
| 국가/구분 |
United States(US) Patent
등록
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| 국제특허분류(IPC7판) |
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| 출원번호 |
US-0085931
(2002-02-28)
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발명자
/ 주소 |
- McDaniel, Max P.
- Collins, Kathy S.
- Smith, James L.
- Benham, Elizabeth A.
- Johnson, Marvin M.
- Eaton, Anthony P.
- Jensen, Michael D.
- Martin, Joel L.
- Hawley, Gil R.
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| 출원인 / 주소 |
- Phillips Petroleum Company
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| 대리인 / 주소 |
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| 인용정보 |
피인용 횟수 :
35 인용 특허 :
9 |
초록
▼
This invention provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer. This invention also provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer, wherein said catalyst composition comprises a post-
This invention provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer. This invention also provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer, wherein said catalyst composition comprises a post-contacted organometal compound, a post-contacted organoaluminum compound, and a post-contacted fluorided solid oxide compound.
대표청구항
▼
This invention provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer. This invention also provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer, wherein said catalyst composition comprises a post-
This invention provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer. This invention also provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer, wherein said catalyst composition comprises a post-contacted organometal compound, a post-contacted organoaluminum compound, and a post-contacted fluorided solid oxide compound. er to satisfy octahedral coordination requirements of the transition metal. 5. The process according to claim 1, wherein said octahedral transition metal complex is of a symmetry selected from the group consisting of C2and C3symmetries, said transition metal is selected from the group consisting of zirconium and hafnium, said adjusting pressure consists of applying high pressures, and wherein substantially pure isotactic poly alpha-olefins are produced. 6. The process according to claim 1, wherein said octahedral transition metal complex is of a symmetry selected from the group of C2and C3symmetries, said transition metal is selected from the group consisting of zirconium and hafnium, said adjusting pressure includes alternating pressure between high pressure and low pressure, and wherein elastomeric poly alpha-olefins are produced. 7. The process according to claim 6, wherein said alternating pressure is carried out at a frequency about equal to or lower than the polymerization insertion rate. 8. The process according to claim 1, wherein said octahedral transition metal complex has C1symmetry and comprises one bidentate chelating ligand, said transition metal is selected from the group consisting of zirconium and hafnium, said adjusting the pressure consists of applying high pressures, and wherein the poly alpha-olefins produced are substantially elastomeric. 9. The process according to claim 3 or 4, wherein said octahedral transition metal complex has C1symmetry, n equals one, said transition metal is selected from the group consisting of zirconium and hafnium, and wherein high pressure is applied to produce poly alpha-olefins that are substantially elastomeric. 10. The process according to any one of claim 1, 5, 6 or 7, wherein said transition metal is selected from the group consisting of vanadium, niobium, tantalum, scandium, yttrium, lanthanum, lanthanides, and actinides. 11. A polymerization process comprising the steps of contacting styrene monomer or monomers comprising styrene in a solvent selected from the group consisting of polar and non-polar solvents under polymerization conditions and at a pressure of about atmospheric or higher with a homogeneous catalyst system including: (i) a cationic form of a chiral octahedral transition metal complex comprising 1, 2 or 3 bidentate chelating ligands and no cyclopentadienyl ligands and having symmetry selected from the group consisting of C1and C2symmetries; and (ii) an anion of an acid selected from the group consisting of a Lewis acid and a Bronsted acid; to obtain syndiotactic polystyrene or a copolymer comprising syndiotactic polystyrene, provided that when said octahedral transition metal complex comprises one ligand, said ligand is chiral. 12. The process according to claim 11, wherein said monomers comprising styrene include aliphatic alpha-olefin, and wherein said polymerization conditions include operation at low pressure, such that an elastomeric copolymer containing sequences of syndiotactic polystyrene and atactic poly-aliphatic alpha-olefins is obtained. 13. The process according to claim 12, wherein said aliphatic alpha-olefin is propylene. 14. The process according to claim 11, wherein said monomers comprising styrene include aliphatic alpha-olefin, and wherein said polymerization conditions include operation at alternating pressure, such that an elastomeric copolymer containing sequences of syndiotactic polystyrene and elastomeric poly-aliphatic alpha-olefins is obtained. 15. The process according to claim 14, wherein said aliphatic alpha-olefin is propylene. 16. A process for the polymerization of one or more alpha-olefins having at least 3 carbon atoms, the process comprising the step of contacting alpha-olefin monomer or monomers in a solvent selected from the group consisting of polar solvents and non-polar solvents under polymerization conditions, at or ab
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