Top 10 Companies in the Polysulphone (PSU) Industry (2025): Market Leaders Enabling High-Performance Solutions

In Business Insights
November 03, 2025


The Global Polysulphone (PSU) Market was valued at USD 1.25 Billion in 2024 and is projected to reach USD 1.78 Billion by 2030, growing at a Compound Annual Growth Rate (CAGR) of 5.8% during the forecast period (2024–2030). This growth is being driven by increasing demand for high-temperature thermoplastics, stringent regulatory requirements in food contact and medical applications, and the accelerating adoption of Advanced Engineering Plastics solutions across industrial and consumer sectors.

As the high-performance polymers industry advances toward specialized applications and sustainable innovations, the spotlight is on the key material suppliers who are driving technological advancement, performance optimization, and material science breakthroughs. In this blog, we profile the Top 10 Companies in the Polysulphone (PSU) Industry—a mix of chemical majors, specialty compounders, and advanced material pioneers shaping the future of global polymer solutions.


🔟 1. Solvay S.A.

Headquarters: Brussels, Belgium
Key Offering: RADEL® R PSU, UDEL® PSU, Specialty PSU Compounds

Solvay is the global leader in polysulphone manufacturing, offering a comprehensive portfolio of PSU materials known for their exceptional thermal stability, chemical resistance, and biocompatibility. Their advanced polymers division serves medical device manufacturers, aerospace contractors, and industrial equipment producers worldwide.

Innovation Initiatives:

  • Developing next-generation medical-grade PSU

  • PSU innovation partnerships with healthcare companies

  • Committed to circular economy principles and sustainable production

Download FREE Sample Report: Global and United States Polysulphone (PSU) Market – View in Detailed Research Report


9️⃣ 2. BASF SE

Headquarters: Ludwigshafen, Germany
Key Offering: ULTRASON® PSU, Custom PSU Compounds

BASF operates in over 80 countries and supplies high-performance polymers to thousands of industrial customers annually. The company maintains a strong focus on PSU research and development, particularly for applications requiring sterilization compatibility and dimensional stability.

Innovation Initiatives:

  • Strategic PSU capacity expansions in Europe and Asia

  • Collaboration with automotive and electronics manufacturers for specialized PSU grades


8️⃣ 3. PolyOne Corporation

Headquarters: Avon Lake, Ohio, USA
Key Offering: Custom PSU Formulations, Color Concentrates

PolyOne, now part of Avient Corporation, has been a key player in PSU compounding and distribution. Their expertise lies in developing specialized PSU grades with enhanced properties for specific end-use applications.

Innovation Initiatives:

  • Focus on healthcare and consumer applications requiring rigorous certifications

  • Development of anti-microbial PSU formulations for medical devices


7️⃣ 4. Omnia Plastica S.p.A.

Headquarters: Milan, Italy
Key Offering: Standard and Custom PSU Grades

Omnia Plastica specializes in engineering plastics distribution and has established itself as a reliable supplier of PSU materials across European markets.

Innovation Initiatives:

  • Quality certifications including ISO 13485 for medical applications

  • Technical support services for PSU processing and application development

Download FREE Sample Report: Global and United States Polysulphone (PSU) Market – View in Detailed Research Report


6️⃣ 5. RTP Company

Headquarters: Winona, Minnesota, USA
Key Offering: Reinforced PSU Compounds, Specialty Formulations

RTP Company, now part of Avient Corporation, delivers engineered thermoplastic compounds including advanced PSU grades to customers in highly regulated industries.

Innovation Initiatives:

  • Global distribution network serving 2,000+ customers annually

  • Focus on high-performance applications requiring exceptional mechanical properties


5️⃣ 6. Sigma-Aldrich (Merck KGaA)

Headquarters: Darmstadt, Germany
Key Offering: Laboratory Grade PSU, Research Chemicals

Sigma-Aldrich, part of Merck KGaA, supplies high-purity PSU materials for research and development applications across academic and industrial sectors.

Innovation Initiatives:

  • High-performance polymer offerings including PSU for electronic research.

    Innovation Initiatives:

    • ISO 9001 certified manufacturing facilities

    • Development of analytical standards for PSU characterization and testing


    4️⃣ 7. Ensinger GmbH

    Headquarters: Nufringen, Germany
    Key Offering: TECASON® P SU, Semi-finished PSU Products

    Ensinger is a leading manufacturer of engineering plastics, including various PSU grades for medical technology and food processing applications.

    Innovation Initiatives:

    • Global presence with production sites in Europe, North America, and Asia

    • Focus on high-performance applications requiring continuous service at elevated temperatures


    3️⃣ 8. Westlake Plastics Company

    Headquarters: Lenni, Pennsylvania, USA
    Key Offering: Semitron® PSU, Electrical Grade Formulations

    Westlake Plastics specializes in the distribution and fabrication of engineering plastics including PSU rods, sheets, and custom profiles.

    Innovation Initiatives:

    • Custom PSU solutions for electrical insulation applications

    • Technical expertise in PSU machining and fabrication for specialized components.


    2️⃣ 9. Röchling Group

    Headquarters: Mannheim, Germany
    Key Offering: SUSTAPOR® PSU, Medical Device Components

    Röchling specializes in engineering plastics for medical, aerospace, and transportation applications, leveraging PSU’s biocompatibility and sterilization capabilities.

    Innovation Initiatives: