Japan Polypropylene Corporation

Japan Polyethylene Corporation

Toshiaki Egashira

Hiroyuki Shimizu

Hideshi Uchino

Kazuhiro Yamamoto

Fumihiko Shimizu

Akio Tanna

Naomasa Sato

Minoru Kobayashi

Takaaki Hattori

Masahiro Uematsu

Tetsuya Morioka

An object of the present invention is to provide a novel production method of ethylene-based ionomer having excellent mechanical properties and heat resistance which exhibits remarkably excellent breaking elongation, breaking stress, and strain hardening, and has a high melting point. The present invention relates to a production method of an ethylene-based ionomer including a heating conversion step of heating a specific ethylene/unsaturated carboxylic acid ester copolymer and converting the ester group in the copolymer into a metal-containing carboxylate containing a metal ion of Group 1, 2, or 12 of the periodic table.

Production method of ethylene-based ionomer and ethylene-based ionomer

Provided is a process of effectively producing an ethylene/unsaturated carboxylic acid copolymer having excellent mechanical and thermal properties. A process for producing an ethylene/unsaturated carboxylic acid copolymer comprises: producing an ethylene/unsaturated carboxylic acid ester copolymer from ethylene and unsaturated carboxylic acid ester using a late-transition-metal complex catalyst; and heating the ethylene/unsaturated carboxylic acid ester copolymer at a temperature capable of converting the ester group into a carboxylic acid group, thereby converting into the ethylene/unsaturated carboxylic acid copolymer.

Process for producing ethylene/unsaturated carboxylic acid copolymer, and said copolymer

To provide an industrially useful &#x3b1;-olefin&#x2022;((meth)acrylic acid)-based olefin copolymer having both a high molecular weight and a high comonomer content, a catalyst component capable of realizing a production of two different kinds of &#x3b1;-olefin&#x2022;((meth)acrylic acid)-based olefin copolymers, and a production process using the catalyst. An &#x3b1;-olefin&#x2022;((meth)acrylic acid)-based olefin copolymer is produced by using a metal complex complexed with a ligand represented by the following formula (Y is phosphorus or arsenic) for a catalyst composition. 

Triarylphosphine or triarylarsine compound, alpha-olefin polymerization catalyst using the compound, ternary copolymer, and production process of alpha-olefin-((meth)acrylic acid)-based copolymer

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Kanagawa, Japan

Toshiaki Egashira