Patent US5648440A successfully refreshed from Google Patents.
US5648440A
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Catalyst components for polymerization of olefins and use thereof
Assignee: Mitsubishi Chemical Corp
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Filing: 1995-03-01
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Granted: 1997-07-15
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Expires: 2015-03-01
Abstract
Abstract Disclosed is a catalyst component for the polymerization of olefins, which is a compound having the following structure: <IMAGE> (I) wherein R1 is a hydrocarbon radical having 1 to 10 carbon atoms or a halogen-containing hydrocarbon radical having 1 to 10 carbon atoms, and R2s are each a hydrogen atom, a halogen atom, a siloxy group, a lower-alkyl-substituted siloxy group or a hydrocarbon radical having 1 to 10 carbon atoms, or which is a reaction product of the following sub-components (i) and (ii): sub-component (i) which is a compound having the formula R1-B-(OH)2 in which R1 is a hydrocarbon radical having 1 to 10 carbon atoms or a halogen-containing hydrocarbon radical having 1 to 10 carbon atoms; and sub-component (ii) which is an organoaluminum compound.
Inventors
- 👤 Toshihiko Sugano
- 👤 Tomohiko Takahama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:47
CPC Classifications
C; C08; C08F; C08F10/00; C07; C07F; C07F5/00; C07F5/06; C07F5/061; C07F5/066; C07F5/068; C08F110/00; C08F110/02; C08F110/04; C08F110/06; C08F210/00; C08F210/16; C08F4/00; C08F4/42; C08F4/44; C08F4/60; C08F4/62; C08F4/639; C08F4/63912; C08F4/6392; Y; Y10; Y10S; Y10S526/00; Y10S526/943
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
143 words
A method of preparing an α-olefin polymer, comprising the step of: contacting an α-olefin with a catalyst prepared from the combination of the following components (A), (B) and (C), thereby polymerizing said α-olefin: component (A) which is a compound having the formula: ##STR7## wherein R 1 is a hydrocarbon radical having 1 to 10 carbon atoms or a halogen-containing hydrocarbon radical having 1 to 10 carbon atoms, and R 2 s are each a hydrogen atom, a halogen atom, a siloxy group, a lower-alkyl-substituted siloxy group or a hydrocarbon radical having 1 to 10 carbon atoms; component (B) which is a transition-metal compound having at least one conjugated 5-membered cyclic ligand where the transition metal is a member of groups IVB to VIB of the Periodic Table; and component (C) which is an organoaluminum compound other than the compound defined as component (A).
Claim 2
Independent Claim
143 words
A method of preparing an α-olefin polymer, comprising the step of: contacting an α-olefin with a catalyst prepared from the combination of the following components (A), (B) and (C), thereby polymerizing said α-olefin: component (A) which is a compound having the formula: ##STR7## wherein R 1 is a hydrocarbon radical having 1 to 10 carbon atoms or a halogen-containing hydrocarbon radical having 1 to 10 carbon atoms, and R 2 s are each a hydrogen atom, a halogen atom, a siloxy group, a lower-alkyl-substituted siloxy group or a hydrocarbon radical having 1 to 10 carbon atoms; component (B) which is a transition-metal compound having at least one conjugated 5-membered cyclic ligand where the transition metal is a member of groups IVB to VIB of the Periodic Table; and component (C) which is an organoaluminum compound other than the compound defined as component (A).
Claim 3
Independent Claim
131 words
A method of preparing an α-olefin polymer, comprising the step of: contacting an α-olefin with a catalyst prepared by combining components (A), (B) and (C), thereby polymerizing said α-olefin: wherein component (A) is a reaction product of sub-component (i) which is a compound of the formula: R 1 --B--(OH) 2 in which R 1 is a hydrocarbon radical of 1 to 10 carbon atoms or a halogen-containing hydrocarbon radical having 1 to 10 carbon atoms, and sub-component (ii ) which is an organoaluminum compound; component (B) is a transition metal compound having at least one conjugated 5-membered cyclic ligand where the transition metal belongs to one of the Groups IVB to VIB of the Periodic Table; and component (C) is an organoaluminum compound which does not contain boron in the molecule.
Claim 4
Independent Claim
131 words
A method of preparing an α-olefin polymer, comprising the step of: contacting an α-olefin with a catalyst prepared by combining components (A), (B) and (C), thereby polymerizing said α-olefin: wherein component (A) is a reaction product of sub-component (i) which is a compound of the formula: R 1 --B--(OH) 2 in which R 1 is a hydrocarbon radical of 1 to 10 carbon atoms or a halogen-containing hydrocarbon radical having 1 to 10 carbon atoms, and sub-component (ii ) which is an organoaluminum compound; component (B) is a transition metal compound having at least one conjugated 5-membered cyclic ligand where the transition metal belongs to one of the Groups IVB to VIB of the Periodic Table; and component (C) is an organoaluminum compound which does not contain boron in the molecule.
Claim 5
Independent Claim
124 words
A method of preparing an α-olefin polymer, comprising the step of: contacting an α-olefin with a catalyst prepared by combining components (A) and (B), thereby polymerizing the α-olefin; component (A) which is a compound having the formula: ##STR8## wherein R 1 is a hydrocarbon radical having 1 to 10 carbon atoms or a halogen-containing hydrocarbon radical having 1 to 10 carbon atoms, and R 2 s are each a hydrogen atom, a halogen atom, a siloxy group, a lower-alkyl-substituted siloxy group or a hydrocarbon radical having 1 to 10 carbon atoms; and component (B) which is a transition metal compound having at least one conjugated 5-membered cyclic ligand where the transition metal is a member of groups IVB to VIB of the Periodic Table.
Claim 6
Independent Claim
124 words
A method of preparing an α-olefin polymer, comprising the step of: contacting an α-olefin with a catalyst prepared by combining components (A) and (B), thereby polymerizing the α-olefin; component (A) which is a compound having the formula: ##STR8## wherein R 1 is a hydrocarbon radical having 1 to 10 carbon atoms or a halogen-containing hydrocarbon radical having 1 to 10 carbon atoms, and R 2 s are each a hydrogen atom, a halogen atom, a siloxy group, a lower-alkyl-substituted siloxy group or a hydrocarbon radical having 1 to 10 carbon atoms; and component (B) which is a transition metal compound having at least one conjugated 5-membered cyclic ligand where the transition metal is a member of groups IVB to VIB of the Periodic Table.
Claim 7
Independent Claim
115 words
A method of preparing an α-olefin polymer, comprising the step of: contacting an α-olefin with a catalyst prepared by combining components (A) and (B), thereby polymerizing said α-olefin: component (A) which is the reaction product of sub-component (i) which is a compound of the formula: R 1 --B--(OH) 2 in which R 1 is a hydrocarbon radical of 1 to 10 carbon atoms or a halogen-containing hydrocarbon radical of 1 to 10 carbon atoms; and sub-component (ii) which is an organoaluminum compound; and component (B) which is a transition metal compound having at least one conjugated 5-membered cyclic ligand where the transition metal is a member of groups IVB to VIB of the Periodic Table.
Claim 8
Independent Claim
115 words
A method of preparing an α-olefin polymer, comprising the step of: contacting an α-olefin with a catalyst prepared by combining components (A) and (B), thereby polymerizing said α-olefin: component (A) which is the reaction product of sub-component (i) which is a compound of the formula: R 1 --B--(OH) 2 in which R 1 is a hydrocarbon radical of 1 to 10 carbon atoms or a halogen-containing hydrocarbon radical of 1 to 10 carbon atoms; and sub-component (ii) which is an organoaluminum compound; and component (B) which is a transition metal compound having at least one conjugated 5-membered cyclic ligand where the transition metal is a member of groups IVB to VIB of the Periodic Table.
References Cited (Backward Citations)
US5414180A
Cited
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 2000-07-14 | 2001-01-13 | 2001-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-07-14 | 2005-01-13 | 2005-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-07-14 | 2009-01-13 | 2009-07-15 | $7700.00 | Window Closed / Lapsed |