Mitsui Chemicals, Idemitsu Kosan, and Sumitomo Chemical to integrate polyolefin businesses

Mitsui Chemicals, Idemitsu Kosan, and Sumitomo Chemical signed an MOU to integrate Sumitomo Chemical's PP and LLDPE businesses into Prime Polymer, a joint venture between Mitsui and Idemitsu. The integration will occur in two phases, with Sumitomo Chemical acquiring a 20% stake in Prime Polymer by July 1, 2026.

“Mitsui Chemicals, Idemitsu Kosan, and Sumitomo Chemical have entered into a Memorandum of Understanding regarding the integration of the polyolefin (PO) business operated by Prime Polymer... with Sumitomo Chemical’s polypropylene (PP) business and linear low-density polyethylene (LLDPE) business in ”adsalecprj.com

• 1 source
• adsalecprj.comJoint venture set up for business integration of Sumitomo Chemical’s PP and LLDPE - CPRJAdsale Plastics NetworkJan 8, 2026

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