# Evonik expands HTPB capacity at Marl, Germany

Evonik is expanding its POLYVEST® HT capacity at its existing site in Marl, Germany, with construction underway and the first phase scheduled to go on stream in Q2 2027.

- Type: Expansion
- Announced: 2026-02-06
- Where: Marl, Germany, Germany
- Starts operating: Q3 2027
- Status: under construction
- Products: hydroxyl-terminated polybutadienes (HTPB), POLYVEST® HT
- Sectors: [Specialty Chemicals](https://endata.com/sectors/specialty-chemicals.md)

## Companies

- [Evonik](https://endata.com/companies/15139.md)

## Sources

- [evonik.com](https://www.evonik.com/en/news/press-releases/2026/02/evonik-expands-global-production-of-hydroxyl-terminated-polybutadienes.html), 2026-02-06: "Construction is now underway to significantly increase output at its existing German site, scheduled to go on stream in the second quarter of 2027."
- [european-coatings.com](https://www.european-coatings.com/news/markets-companies/evonik-expands-global-production-of-hydroxyl-terminated-polybutadienes/), 2026-02-06: "We are reinforcing our commitment to reliably meeting global demand and enhancing supply for our customers."

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