# Sumitomo Chemical transfers polyolefin business to Prime Polymer, acquires 20% stake

Sumitomo Chemical will transfer its polypropylene and linear low-density polyethylene businesses to Prime Polymer through a two-stage company split, and acquire a 20% equity stake in Prime Polymer. The effective date is July 1, 2026.

- Type: Acquisition
- Announced: 2026-07-01
- Where: Japan
- Status: announced
- Products: polypropylene, linear low-density polyethylene
- Sectors: [Plastics and Polymers](https://endata.com/sectors/plastics-polymers.md)

## Companies

- [Sumitomo Chemical](https://endata.com/companies/20503.md)
- [Prime Polymer](https://endata.com/companies/31997.md) (acquirer)
- [Prime Polymer](https://endata.com/companies/31997.md) (partner)

## Sources

- [japanir.jp](https://japanir.jp/en/company/company-4005/ir/4005-20260701-01_wp_corporate_restructuring/), 2026-07-01: "Sumitomo Chemical will transfer the polypropylene business and the linear low-density polyethylene business to Prime Polymer through a two-stage company split with Prime Polymer as the absorption-dividing successor, and Sumitomo Chemical will acquire shares corresponding to 20% of Prime Polymer's eq"
- [plastmatch.com](https://www.plastmatch.com/news/sumitomo-chemical-integrates-pp-and-lldpe-ts951po8-detail), 2026-07-02: "The integration will be carried out in two steps under an absorption-type company split structure."

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Data from Endata (https://endata.com/). Announcements are summarized from public sources and may be incomplete; check the linked originals.