Japanese Triple-E Corporation plans to consolidate its polyolefins business
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According to Sinochem News, recently Mitsui Chemicals, Idemitsu Kosan, and Sumitomo Chemical jointly announced that their plan to integrate their polyolefin businesses has been approved by the Japanese Fair Trade Commission. On September 10, 2025, the three parties reached a basic agreement on cooperation. They plan to transfer Sumitomo Chemical’s polypropylene (PP) and linear low-density polyethylene (LLDPE) businesses in Japan to Prime Polymer Co., Ltd., a joint venture between Mitsui Chemicals and Idemitsu Kosan. This business integration focuses on Japan’s domestic polyolefins industry, aiming to build a more resilient basic chemical industry chain, strengthen the domestic industrial support system, and comprehensively enhance the competitiveness of polyolefin products in the market. On December 24 of the same year, the three parties officially signed an agreement on business integration and joint venture, finalizing the details for carrying out the cooperation. To facilitate the implementation of the integration, Prime Polymer Co., Ltd. and Sumitomo Chemical, in accordance with relevant Japanese antitrust laws and regulations, submitted an integration plan to the Fair Trade Commission of Japan and underwent a compliance review. Currently, the overseas antitrust review of the project is still underway. The three parties stated that they will officially proceed with the integration of their polyolefins businesses after obtaining full approval from the competition regulatory authorities in all respective countries, thereby further optimizing the structure of Japan’s chemical industry.
Many of Japan’s polyolefin plants utilize technologies that are twenty years old and have production scales dating back fifteen years. In the current international environment, their competitiveness and adaptability have declined; only a few specialty polymers still retain some degree of competitiveness. Additionally, for Japan, the cost-bearing capacity regarding the raw materials for polyolefins may also have decreased significantly due to rising international oil prices. These three are considered large; some smaller polyolefin product companies may have disappeared in earlier years.