[미국특허]
Catalyst systems containing boron-bridged cyclopentadienyl-fluorenyl metallocene compounds with an alkenyl substituent
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C08F-004/6592
C08F-010/02
C08F-110/02
C07F-017/00
C08F-210/16
C08L-023/08
C08F-004/659
출원번호
US-0046549
(2016-02-18)
등록번호
US-9469702
(2016-10-18)
발명자
/ 주소
Greco, Jeffrey F.
출원인 / 주소
Chevron Phillips Chemical Company LP
대리인 / 주소
Merchant & Gould P.C.
인용정보
피인용 횟수 :
3인용 특허 :
63
초록▼
Disclosed herein are catalyst compositions containing boron-bridged, cyclopentadienyl-fluorenyl metallocene compounds with an alkenyl substituent. These catalyst compositions can be used for the polymerization of olefins. For example, ethylene copolymers produced using these catalyst compositions ca
Disclosed herein are catalyst compositions containing boron-bridged, cyclopentadienyl-fluorenyl metallocene compounds with an alkenyl substituent. These catalyst compositions can be used for the polymerization of olefins. For example, ethylene copolymers produced using these catalyst compositions can be characterized by a combination of a flat or a conventional comonomer distribution and low levels of long chain branching.
대표청구항▼
1. A catalyst composition comprising a metallocene compound, an activator, and an optional co-catalyst, wherein the metallocene compound has the formula: wherein: M is Ti, Zr, or Hf;each X independently is a monoanionic ligand;CpA is a cyclopentadienyl group with an alkenyl substituent;CpB is a flu
1. A catalyst composition comprising a metallocene compound, an activator, and an optional co-catalyst, wherein the metallocene compound has the formula: wherein: M is Ti, Zr, or Hf;each X independently is a monoanionic ligand;CpA is a cyclopentadienyl group with an alkenyl substituent;CpB is a fluorenyl group; andeach R independently is H, a C1 to C36 hydrocarbyl group, or a C1 to C36 hydrocarbylsilyl group. 2. The composition of claim 1, wherein: M is Zr or Hf;each X independently is a halide or a C1 to C18 hydrocarbyl group;CpB is a substituted fluorenyl group; andeach R independently is H or a C1 to C18 hydrocarbyl group. 3. The composition of claim 1, wherein: M is Zr or Hf;each X independently is Cl, methyl, phenyl, or benzyl;CpA is a cyclopentadienyl group with only one alkenyl substituent;CpB is a substituted fluorenyl group; andeach R independently is a C1 to C6 alkyl group. 4. The composition of claim 1, wherein the catalyst composition comprises an organoaluminum co-catalyst, and wherein the activator comprises an activator-support, the activator-support comprising fluorided alumina, sulfated alumina, fluorided silica-alumina, sulfated silica-alumina, fluorided silica-coated alumina, sulfated silica-coated alumina, or any combination thereof. 5. The composition of claim 1, wherein the activator comprises an activator-support, the activator-support comprising a solid oxide treated with an electron-withdrawing anion. 6. The composition of claim 5, wherein: a catalyst activity of the catalyst composition is greater than about 100,000 grams of ethylene polymer per gram of the metallocene compound per hour, under slurry polymerization conditions, with a triisobutylaluminum co-catalyst, using isobutane as a diluent, and with a polymerization temperature of 80° C. and a reactor pressure of 390 psig. 7. The composition of claim 1, wherein the activator comprises an aluminoxane compound, an organoboron or organoborate compound, an ionizing ionic compound, or any combination thereof. 8. A metallocene compound having the formula: wherein: M is Ti, Zr, or Hf;each X independently is a monoanionic ligand;CpA is a cyclopentadienyl group with an alkenyl substituent;CpB is a fluorenyl group; andeach R independently is H, a C1 to C36 hydrocarbyl group, or a C1 to C36 hydrocarbylsilyl group. 9. The compound of claim 8, wherein: M is Zr or Hf;each X independently is a halide or a C1 to C18 hydrocarbyl group; andeach R independently is H or a C1 to C18 hydrocarbyl group. 10. The compound of claim 8, wherein: M is Zr or Hf;each X independently is Cl, methyl, phenyl, or benzyl; andeach R independently is a C1 to C6 alkyl group. 11. The compound of claim 8, wherein the alkenyl substituent is a C3 to C8 terminal alkenyl group. 12. The compound of claim 8, wherein: each X independently is a halide or a C1 to C18 hydrocarbyl group;CpB is a substituted fluorenyl group; andeach R independently is H or a C1 to C18 hydrocarbyl group. 13. The compound of claim 8, wherein: each X independently is Cl, methyl, phenyl, or benzyl;CpA is a cyclopentadienyl group with one alkenyl substituent;CpB is a substituted fluorenyl group; andeach R independently is a C1 to C6 alkyl group. 14. The compound of claim 8, wherein: CpA is a cyclopentadienyl group with one C3 to C8 terminal alkenyl substituent; andCpB is a fluorenyl group with two C1 to C6 linear or branched alkyl substituents. 15. The compound of claim 8, wherein: each X is Cl; andeach R independently is H or a C1 to C18 hydrocarbyl group. 16. The compound of claim 15, wherein: M is Zr or Hf;the alkenyl substituent is a C3 to C8 terminal alkenyl group;CpB is a substituted fluorenyl group; andeach R independently is C1 to C6 linear or branched alkyl group. 17. The composition of claim 1, wherein: the catalyst composition comprises an organoaluminum co-catalyst; andthe activator comprises a fluorided solid oxide and/or a sulfated solid oxide. 18. The composition of claim 17, wherein: M is Zr or Hf;each X independently is a halide or a C1 to C18 hydrocarbyl group;the alkenyl substituent is a C3 to C8 terminal alkenyl group;CpB is a substituted fluorenyl group; andeach R independently is H or a C1 to C18 hydrocarbyl group. 19. The composition of claim 1, wherein the activator comprises an aluminoxane compound. 20. The composition of claim 19, wherein: M is Zr or Hf;each X independently is a halide or a C1 to C18 hydrocarbyl group;the alkenyl substituent is a C3 to C8 terminal alkenyl group;CpB is a substituted fluorenyl group; andeach R independently is H or a C1 to C18 hydrocarbyl group.
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