# US 7,605,105 B2 · Transition metal polymerization catalysts, their synthesis and use in olefin polymerization > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 7,605,105 B2 - Document ID: US7605105B2 - Status: Granted - Kind: B2 - Application number: 12/025,468 - Filed: 2008-02-04 - Published: 2008-07-03 - Granted: 2009-10-20 - Earliest claimed: 2005-02-01 - Assignees: ExxonMobil Chemical Patents Inc. - Inventors: Lisa S. Baugh; Enock Berluche; Paul V. Hinkle; Francis C. Rix - Web page: https://patentgrep.com/patent/US7605105B2 ## CPC - C07F 15/045: {without a metal-carbon linkage} - C07F 15/04: Nickel compounds - C08F 10/00: Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond - C08F 4/619: Component covered by group C08F4/60 containing a transition metal-carbon bond {(C08F4/60003 - C08F4/60196 take precedence)} - C08F 110/02: Ethene - C07F: ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM (metal-containing porphyrins C07D487/22) - C08F: MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS ## Abstract A transition metal ligand complex has the following formula: wherein R1 and R2 (each occurrence) independently represent an aryl, alkyl, or cycloalkyl group having up to 20 carbon atoms; R3 and R4 (each occurrence) independently represent an aryl, alkyl, or cycloalkyl group having up to 20 carbon atoms; R5 represents an aryl, alkyl, or cycloalkyl group having up to 20 carbon atoms, provided that R4 and R5 may be joined to form a cyclic structure; R6 represents an alkyl or aryl group having up to 20 carbon atoms; and Mt represents a transition metal selected from Group 7, 8, 9, 10, 11, or 12 of the Periodic Table of the Elements. ## Claims ### Claim 1 An olefin polymerization catalyst system comprising an activator and a transition metal ligand complex having the following formula: wherein R1 and R2 (each occurrence) independently represent an aryl, alkyl, or cycloalkyl group having up to 20 carbon atoms; R3 and R4 (each occurrence) independently represent an aryl, alkyl, or cycloalkyl group having up to 20 carbon atoms; R5 represents an aryl, alkyl, or cycloalkyl group having up to 20 carbon atoms, provided that R4 and R5 may be joined to form a cyclic structure; R6 represents an alkyl or aryl group having up to 20 carbon atoms; and Mt represents a transition metal selected from the group consisting of Groups 7, 8, 9, 10, 11, and 12 of the Periodic Table of the Elements. ### Claim 2 (depends on 1) The catalyst system of claim 1 wherein one or each of R1 and R2 represents a t-butyl group. ### Claim 3 (depends on 1) The catalyst system of claim 1 wherein one or each of R3 and R4 represents an aryl group. ### Claim 4 (depends on 3) The catalyst system of claim 3 wherein one or each of R3 and R4 represents an aryl group bearing an alkyl substituent having up to 8 carbons at one or both of the ortho (2,6-) positions to the respective aryl-N bond. ### Claim 5 (depends on 4) The catalyst system of claim 4 and bearing said alkyl substituents at both of the ortho (2,6-) positions to the respective aryl-N bond. ### Claim 6 (depends on 5) The catalyst system of claim 5 wherein each alkyl substituent is independently selected from methyl and isopropyl. ### Claim 7 (depends on 5) The catalyst system of claim 5 wherein each alkyl substituent is isopropyl. ### Claim 8 (depends on 1) The catalyst system of claim 1 wherein R5 represents a phenyl group. ### Claim 9 (depends on 1) The catalyst system of claim 1 wherein R6 represents a phenyl group. ### Claim 10 (depends on 1) The catalyst system of claim 1 wherein R4 and R5 are joined to form a cyclic structure. ### Claim 11 (depends on 10) The catalyst system of claim 10 wherein R4 represents an aryl group bearing an alkyl substituent having up to 8 carbons at one or both of the ortho (2,6-) positions to the aryl-N bond, and R4 and R5 are joined such that the complex has the following formula: wherein R1 and R2 (each occurrence) independently represent an aryl, alkyl, or cycloalkyl group having up to 20 carbon atoms; R3 represent an aryl, alkyl, or cycloalkyl group having up to 20 carbon atoms; R6 represents an alkyl or aryl group having up to 20 carbon atoms; Mt represents a transition metal selected from the group consisting of Groups 7, 8, 9, 10, 11, and 12 of the Periodic Table of the Elements; and R7, R8, R9, R10, R11, and R12 independently represent hydrogen or an alkyl group having up to 8 carbon atoms. ### Claim 12 (depends on 11) The catalyst system of claim 11 wherein R7 represents an isopropyl group; R8, R9, R10, and R12 represent hydrogen; and R11 represents a methyl group. ### Claim 13 (depends on 12) The catalyst system of claim 12 wherein R6 represents a phenyl group. ### Claim 14 (depends on 1) The catalyst system of claim 1 wherein each of R1 and R2 is t-butyl, and each of R3 and R4 is a 2,4,6-trimethylphenyl group. ### Claim 15 (depends on 1) The catalyst system of claim 1 wherein each of R1 and R2 is t-butyl, and each of R3 and R4 is a cyclohexyl group. ### Claim 16 (depends on 1) The catalyst system of claim 1 wherein the transition metal Mt is selected from the group consisting of Groups 10, 11 and 12 of the Periodic Table of Elements. ### Claim 17 (depends on 1) The catalyst system of claim 1 wherein the transition metal Mt is selected from Group 10 of the Periodic Table of Elements. ### Claim 18 (depends on 1) The catalyst system of claim 1 wherein the transition metal Mt is nickel or palladium. ### Claim 19 (depends on 13) The catalyst system of claim 13 wherein the transition metal Mt is nickel. ### Claim 20 (depends on 1) The catalyst system of claim 1 wherein the activator is tris(pentafluorophenyl)borane. ### Claim 21 (depends on 19) The catalyst system of claim 19 wherein the activator is tris(pentafluorophenyl)borane. ### Claim 22 (depends on 1) A process for polymerizing at least one monomer comprising contacting said monomer with the catalyst system of claim 1. ### Claim 23 (depends on 22) The process of claim 22 wherein the monomer comprises ethylene and/or propylene. ### Claim 24 (depends on 21) A process for polymerizing at least one monomer comprising contacting said monomer with the catalyst system of claim 21. ### Claim 25 (depends on 24) The process of claim 24 wherein the monomer comprises ethylene and/or propylene.