RAUNHEIM, Germany, February 03, 2026 – TOPAS Advanced Polymers GmbH’s parent company Polyplastics will be merged with its parent company Daicel effective April 1, 2026. From a practical point of view, the merger will result in Daicel and Polyplastics operating together as Daicel, with several strategic business units (including a new engineering polymers business unit, which will be Daicel’s largest by revenue) representing the main business lines of the combined companies.
From a legal perspective, the merger will be executed via an absorption-type split of Polyplastics Co., Inc. of Japan into (1) the engineering plastics business (including businesses incidental to it) and (2) the business of holding and administering the shares of Polyplastics’ subsidiaries and affiliates, with Daicel acquiring (1) as a whole. Polyplastics will maintain its juridical personality after the split but will not interact with customers.
In the marketplace and within Daicel, Polyplastics will become the Daicel High Performance Polymers SBU post-merger. Most subsidiaries will also be renamed at that time. For instance, Polyplastics USA will become Daicel HPP USA, whereas TOPAS Advanced Polymers GmbH will retain its identity for the time being.
Daicel originally established Polyplastics in 1962. In 2020, Daicel shifted Polyplastics, then a group company, into a wholly-owned subsidiary to align its group structure with its Mid-Term Management Strategy “Accelerate 2025” and further strengthen Polyplastics’ engineering plastics business. Subsequently, Daicel implemented various synergies, including the adoption of Daicel Production Innovation at Polyplastics’ Fuji Plant. Decision-making has become faster as well.
The engineering plastics business has grown steadily, including the start of POM commercial production by DP Engineering Plastics (Nantong) Co., Ltd. (Nantong, China) in November 2024, the start of operations at the new LCP polymerization plant by Polyplastics Taiwan Co., Ltd. (Kaohsiung) in February 2025, and startup of the second COC plant by TOPAS Advanced Polymers GmbH (Leuna, Germany) scheduled in April 2026. Moreover, Polyplastics posted a record profit in the previous fiscal year (Polyplastics Group consolidated basis), demonstrating the positive effect of conversion into Daicel’s wholly-owned subsidiary.
The upcoming reorganization of the Daicel Group (Business Integration) is intended to create a new Daicel. Integration of Polyplastics into Daicel is aimed at maximizing corporate value through (1) sharing of know-how on the delivery of technical services and solutions, areas of Polyplastics’ strength, (2) closer coordination with Daicel’s safety business and materials business, and (3) utilization of talent for the growth of the group as a whole. The merger will also make corporate functions more efficient, among other measures.
Since the merger is the acquisition of the business as a whole, there will be no significant change to the production, sales, and technical structures of the engineering plastics business, including the TOPAS® COC segment. Daicel will strive to provide higher value to its stakeholders while maintaining the quality and distribution of its products and services as before.
For more information, visit www.polyplastics.com.
Press Contact: Joseph Grande, 413.684.2463, joe@jgrandecommunications.com
