The present invention pertains to a method for producing a copolymer of ethylene and an allyl monomer having a polar group represented by general formula (1), or a copolymer of ethylene, an allyl monomer having a polar group represented by general formula (1), and other monomers, wherein the copolymer is produced in the presence of a boron compound having a boron-hydrogen bond or a boron-carbon bond (for example, a compound represented by general formula (2)) by using a metal complex represented by general formula (C1) as a polymerization catalyst (the symbols in the formulas are as described in the description). According to the present invention, a copolymer of ethylene and an allyl monomer can be efficiently produced with high catalytic activity, wherein the copolymer has a polar group and can be used in various applications. ##STR00001##

The present invention pertains to a method for producing a copolymer of ethylene and an allyl monomer having a polar group represented by general formula (1), or a copolymer of ethylene, an allyl monomer having a polar group represented by general formula (1), and other monomers, wherein the copolymer is produced in the presence of a boron compound having a boron-hydrogen bond or a boron-carbon bond (for example, a compound represented by general formula (2)) by using a metal complex represented by general formula (C1) as a polymerization catalyst (the symbols in the formulas are as described in the description). According to the present invention, a copolymer of ethylene and an allyl monomer can be efficiently produced with high catalytic activity, wherein the copolymer has a polar group and can be used in various applications.

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The present invention relates to a self assembled catalyst. More particularly, the present invention relates to a self-assembled catalyst of formula (I) comprising supramolecular phosphine and carboxylate ligands, process for preparation thereof and use of said catalyst of formula (I) in olefin polymerization.

The present invention relates to a self assembled catalyst. More particularly, the present invention relates to a self-assembled catalyst of formula (I) comprising supramolecular phosphine and carboxylate ligands, process for preparation thereof and use of said catalyst of formula (I) in olefin polymerization.

Provided are a catalyst and a method that enable the production of an olefin-based polymer, which has a polar group and is usable for various applications, at high catalytic activity. A metal complex shown in general formula (C1) (in the formula, M represents a palladium atom or a nickel atom, X represents a phosphorus atom (P), R.sup.5-R.sup.9 are as set forth in the claims, L represents an electron donating ligand, and q is 0, , 1, or 2) is used as a catalyst for polymerization of an olefin having a polar group.

Provided are a catalyst and a method that enable the production of an olefin-based polymer, which has a polar group and is usable for various applications, at high catalytic activity. A metal complex shown in general formula (C1) (in the formula, M represents a palladium atom or a nickel atom, X represents a phosphorus atom (P), R.sup.5-R.sup.9 are as set forth in the claims, L represents an electron donating ligand, and q is 0, , 1, or 2) is used as a catalyst for polymerization of an olefin having a polar group.