[미국특허]
Ziegler-natta—metallocene dual catalyst systems with activator-supports
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C08F-004/52
C08F-004/64
C08F-004/76
B01J-037/00
C08F-004/6592
B01J-021/12
B01J-031/16
B01J-037/26
B01J-037/02
B01J-031/22
C08F-004/10
C08F-004/02
C08F-004/68
출원번호
US-0863528
(2015-09-24)
등록번호
US-9540457
(2017-01-10)
발명자
/ 주소
Ding, Errun
Yang, Qing
Guatney, Lloyd W.
Greco, Jeffrey F.
출원인 / 주소
Chevron Phillips Chemical Company LP
대리인 / 주소
Marchant & Gould P.C.
인용정보
피인용 횟수 :
4인용 특허 :
83
초록▼
Catalyst systems having both a metallocene catalyst component and a Ziegler-type catalyst component are disclosed. Such catalyst systems can contain a metallocene compound, a co-catalyst, and a supported catalyst containing a fluorided silica-coated alumina, a magnesium compound, and vanadium and/or
Catalyst systems having both a metallocene catalyst component and a Ziegler-type catalyst component are disclosed. Such catalyst systems can contain a metallocene compound, a co-catalyst, and a supported catalyst containing a fluorided silica-coated alumina, a magnesium compound, and vanadium and/or tetravalent titanium.
대표청구항▼
1. A catalyst composition comprising: (A) a supported catalyst comprising: (a) a fluorided silica-coated alumina;(b) a magnesium compound; and(c) titanium (IV) and/or vanadium;(B) a metallocene compound; and(C) a co-catalyst. 2. The composition of claim 1, wherein: the fluorided silica-coated alumin
1. A catalyst composition comprising: (A) a supported catalyst comprising: (a) a fluorided silica-coated alumina;(b) a magnesium compound; and(c) titanium (IV) and/or vanadium;(B) a metallocene compound; and(C) a co-catalyst. 2. The composition of claim 1, wherein: the fluorided silica-coated alumina comprises from about 20 to about 45 wt. % silica and from about 3 to about 12 wt. % fluorine;the supported catalyst comprises from about 0.5 to about 3 wt. % magnesium, and the magnesium compound is not a reducing agent; andthe supported catalyst comprises from about 0.5 to about 10 wt. % titanium, and the supported catalyst is substantially free of Ti(III). 3. The composition of claim 2, wherein the supported catalyst comprises a titanium (IV) compound comprising a titanium halide, a titanium alkoxide, an alkoxytitanium halide, or a combination thereof. 4. The composition of claim 1, wherein the supported catalyst comprises a magnesium halide, a magnesium alkoxide, an alkoxymagnesium halide, or a combination thereof. 5. The composition of claim 1, wherein the supported catalyst comprises from about 1 to about 50 ppm THF by weight. 6. The composition of claim 1, wherein a molar ratio of the metallocene compound to titanium (IV) in the catalyst composition is in a range from about 10:1 to about 1:10. 7. The composition of claim 6, wherein the metallocene compound comprises a bridged zirconium or hafnium based metallocene compound with a cyclopentadienyl group and a fluorenyl group, and with an alkenyl substituent on the bridging group and/or on the cyclopentadienyl group. 8. The composition of claim 6, wherein the metallocene compound comprises an unbridged zirconium or hafnium based metallocene compound containing two cyclopentadienyl groups, two indenyl groups, or a cyclopentadienyl and an indenyl group. 9. The composition of claim 1, wherein the catalyst composition has a catalyst activity greater than about 10,000 g/g/hr, under slurry polymerization conditions, with a triisobutylaluminum co-catalyst, using isobutane as the diluent, at a polymerization temperature of 90° C. and a reactor pressure of 400 psig. 10. An olefin polymerization process, the process comprising contacting the catalyst composition of claim 1 with an olefin monomer and an optional olefin comonomer in a polymerization reactor system under polymerization conditions to produce an olefin polymer. 11. The process of claim 10, wherein: the polymerization reactor system comprises a slurry reactor, a gas-phase reactor, a solution reactor, or a combination thereof;the olefin polymer is an ethylene/alpha-olefin copolymer; andthe ethylene/alpha-olefin copolymer has less than about 0.005 long chain branches per 1000 total carbon atoms and/or has a substantially constant short chain branch distribution. 12. The process of claim 10, wherein an increase in the melt index of the olefin polymer with the addition of hydrogen from 0 to 880 ppm is greater than an increase in the melt index of an olefin polymer obtained using the same catalyst system without the metallocene compound, under the same polymerization conditions. 13. A process to produce a catalyst composition, the process comprising: (i) contacting: (a) a fluorided silica-coated alumina;(b) a magnesium compound; and(c) a titanium (IV) compound and/or vanadium compound;to form a supported catalyst; and(ii) contacting the supported catalyst, a metallocene compound, and a co-catalyst to form the catalyst composition. 14. The process of claim 13, wherein step (i) is conducted in a non-polar solvent. 15. The process of claim 13, wherein step (i) is conducted in a polar aprotic solvent. 16. The process of claim 13, wherein the fluorided silica-coated alumina comprises from about 20 to about 45 wt. % silica and from about 2 to about 15 wt. % fluorine. 17. The process of claim 13, wherein the supported catalyst comprises from about 0.5 to about 7 wt. % magnesium. 18. The process of claim 17, wherein the magnesium compound is not a reducing agent. 19. The process of claim 13, wherein the supported catalyst comprises from about 0.5 to about 10 wt. % titanium. 20. The process of claim 19, wherein the supported catalyst is substantially free of Ti(III).
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상세보기
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