Which three Japanese chemical companies are integrating their polyolefin operations, and what specific businesses are being transferred?

The three Japanese chemical firms integrating their polyolefin operations are Mitsui Chemicals, Idemitsu Kosan, and Sumitomo Chemical. According to the announcement, Sumitomo Chemical’s domestic polypropylene (PP) and linear low-density polyethylene (LLDPE) businesses in Japan will be integrated into Prime Polymer Co., Ltd.—a joint venture established by Mitsui Chemicals and Idemitsu Kosan.

What is the current regulatory status of the polyolefin business integration, and what remains pending before full implementation?

The integration plan has received approval from Japan’s Fair Trade Commission; however, overseas antitrust reviews are still ongoing. The three companies have stated they will formally implement the polyolefin business integration only after obtaining approval from all relevant competition authorities worldwide.

Three Major Japanese Chemical Firms to Integrate Polyolefin Operations

May 6, 2026

Mitsui Chemicals, Idemitsu Kosan, and Sumitomo Chemical received approval from Japan's Fair Trade Commission to consolidate their polyolefin operations into a new joint venture, Premier Polymer, strengthening the local chemical supply chain.

ccin

2026-05-06

Three Major Japanese Chemical Firms to Integrate Polyolefin Operations

FAQ

Scan to get the App