# US 2013/0158223 A1 · Carboxylate metal complex and catalyst for olefin polymerization > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0158223 A1 - Document ID: US20130158223A1 - Status: Published application - Kind: A1 - Application number: 13/819,053 - Filed: 2011-07-22 - Published: 2013-06-20 - Earliest claimed: 2010-08-31 - Assignees: The University of Tokyo; Showa Denko K.K. - Inventors: Shingo Ito; Kyoko Nozaki; Yoshikuni Okumura; Junichi Kuroda - Web page: https://patentgrep.com/patent/US20130158223A1 ## CPC - C07F 15/045: {without a metal-carbon linkage} - C07D 213/24: with substituted hydrocarbon radicals attached to ring carbon atoms - C07F 9/5442: {Aromatic phosphonium compounds (P-C aromatic linkage)} - C07F 15/006: {Palladium compounds} - C07F 15/0066: {without a metal-carbon linkage} - 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) - C07D: HETEROCYCLIC COMPOUNDS (macromolecular compounds C08) - C08F: MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS ## Abstract The present invention provides a metal complex of group 10 elements of the periodic table having a carboxylate structure represented by formula (C2); a catalyst for polymerization of olefin mainly comprising the metal complex; and a method for producing polymers by homopolymerizing olefin represented by formula (1), polymerizing two or more kinds of the above olefin, or copolymerizing olefin represented by formula (1) with polar group-containing olefin represented by formula (2) (the meaning of the symbols are as set forth in the description) using the catalyst. A metal complex of group 10 elements of the periodic table, in which all of the coordinating atoms to the metal are a hetero atom is stable and useful as a catalyst component for olefin polymerization, and can be used for a long time in homopolymerization of olefin or copolymerization of two or more kinds of olefin. ## Claims ### Claim 1 A carboxylate metal complex represented by formula (C1) (in the formula, M represents a metal atom of group 10 element in the periodic table; X represents a phosphorous atom (P) or an arsenic atom (As); R1 represents a hydrogen atom or hydrocarbon group having 1 to 30 carbon atoms which may be substituted by one or more functional groups selected from a halogen atom, alkoxy group, aryloxy group, acyloxy group and amino group; R2 and R3 independently represent a hydrogen atom, alkoxy group, aryloxy group, acyloxy group, silyl group, amino group or hydrocarbon group having 1 to 30 carbon atoms which may be substituted by one or more functional groups selected from a halogen atom, alkoxy group, aryloxy group, acyloxy group and amino group; R2 and R3 may bond to each other to form a ring structure; Y represents divalent hydrocarbon group having 1 to 70 carbon atoms which may be substituted by one or more functional groups selected from a halogen atom, alkoxy group, aryloxy group, acyloxy group and amino group; L represents a neutral electron-donating ligand and n is 0, ½, 1 or 2. ### Claim 2 (depends on 1) The carboxylate metal complex as claimed in claim 1, wherein the carboxylate metal complex represented by formula (C1) is represented by formula (C2) (in the formula, four R4s independently represent a hydrogen atom, alkyl group having 1 to 8 carbon atoms, alkoxy group having 1 to 8 carbon atoms, aryloxy group having 6 to 18 carbon atoms or a halogen atom; and M, R1, R2, R3, L and n have the same meanings as in claim 1). ### Claim 3 (depends on 2) The carboxylate metal complex as claimed in claim 2, wherein M in formula (C2) is Ni or Pd. ### Claim 4 (depends on 2) The carboxylate metal complex as claimed in claim 2, wherein R1 in formula (C2) is hydrocarbon group having 1 to 30 carbon atoms which may be substituted by a halogen atom. ### Claim 5 (depends on 4) The carboxylate metal complex as claimed in claim 4, wherein R1 in formula (C2) is methyl group or trifluoromethyl group. ### Claim 6 (depends on 5) The carboxylate metal complex as claimed in claim 5, wherein R1 in formula (C2) is methyl group. ### Claim 7 (depends on 2) The carboxylate metal complex as claimed in claim 2, wherein both of R2 and R3 in formula (C2) are isopropyl group or cyclohexyl group. ### Claim 8 (depends on 2) The carboxylate metal complex as claimed in claim 2, wherein all of R4s in formula (C2) are a hydrogen atom. ### Claim 9 (depends on 2) The carboxylate metal complex as claimed in claim 2, wherein L in formula (C2) is 2,6-dimethylpyridine and n is 1. ### Claim 10 (depends on 1) A catalyst for olefin polymerization mainly comprising the carboxylate metal complex claimed in claim 1. ### Claim 11 A method for producing a polymer characterized in polymerizing olefin represented by formula (1) singly or in combination of two or more kinds thereof, or copolymerizing olefin represented by formula (1) and polar group-containing olefin represented by formula (2) CH2═CHR5 (1) (In the formula, R5 represents a hydrogen atom or hydrocarbon group having 1 to 20 carbon atoms) CH2═CR6R7 (2) (In the formula, R6 represents a hydrogen atom or methyl group, R7 represents —COOR8, —CN, —OCOR8, —CH2—OCOR8, —CH2OH, —CH2—N(R9)2 or —CH2-Hal (R8 represents a hydrogen atom or hydrocarbon group having 1 to 5 carbon atoms, R9 represents a hydrogen atom, hydrocarbon group having 1 to 5 carbon atoms or aromatic substituent having 6 to 18 carbon atoms or alkoxycarbonyl group, and Hal represents a halogen atom).