Production method for cyclic olefin copolymer and catalyst composition for copolymerization of norbornene monomer and ethylene

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United States of America Patent

PATENT NO 11795256
APP PUB NO 20230192930A1
SERIAL NO

18003424

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Abstract

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A production method for a cyclic olefin copolymer which is capable of efficiently producing a cyclic olefin copolymer by copolymerizing monomers including a norbornene monomer and ethylene while suppressing the formation of a polyethylene-like impurity, and a catalyst composition for the copolymerization of a norbornene monomer and ethylene. Monomers including a norbornene monomer and ethylene are polymerized in the presence of a metal-containing catalyst, and the metal-containing catalyst has a structure in which a nitrogen atom is bonded to a transition metal of Group 4 of the periodic table and an atom of Group 15 of the periodic table.

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Patent Owner(s)

Patent OwnerAddress
POLYPLASTICS CO LTD2-18-1 KONAN MINATO-KU TOKYO 1088280 ?1088280

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Tada, Tomoyuki Fuji, JP 42 486
Wakitani, Naoyuki Fuji, JP 3 0

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