CLEVELAND – December 9, 2024 – Avient Corporation, a premier provider of specialty and sustainable materials solutions and services, announces the addition of flame-retardant (FR) grades manufactured without intentionally added PFAS-based raw materials to its portfolio of Complēt™ PKE Long Fiber Reinforced Polyketone Thermoplastics. These 30% or 40% long glass fiber (LGF) reinforced thermoplastics have a flammability rating of V-0 at 1.5 mm in both black and natural grades. These glass-filled Complēt PKE FR grades are formulated without PFAS-based raw materials, providing alternatives amid growing regulatory guidelines for these chemicals.

Geon(TM) DB3114 BLACK 70 FR FASTER FUSE Geon(TM) DB5445 BLACK NON PHTHALATE FR PP FR 8-6 LMS-1000

B70 G50 H BLACK MF5420-0013 FR Blue PP FR 8-6 LMS-1000

The PK blends included unfilled, high impact (HI), and FR grades. Images of A) Trilliant HC8900 series, B) FR PC alloys, and C) FR copolyester tensile bars in the strain apparatus following a 72-hour treatment with Virex® TB. L.; Horan, T.

Hammerhead™ FR Flame Retardant Composite Panels Avient’s Hammerhead™ FR thermoplastic composite sandwich panels with integrated flame-retardant technology. Download eBook to get an in-depth look on how you can benefit from Hammerhead FR Panels

Microsoft PowerPoint - AVNT Q4 2021 Earnings Presentation (v17) - W PEERS x ESI AVIENT CORPORATION F O U R T H Q U A R T E R 2 0 2 1 R E S U L T S A N D 2 0 2 2 F I N A N C I A L G U I D A N C E (NYSE: AVNT) F E B R U A RY 8 , 2 0 2 2 DISCLAIMER 2 Forward-Looking Statements In this presentation, statements that are not reported financial results or other historical information are “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. D is t. ) K W R P P G F U L R P M A V Y F M C H U N H X L S C L E C L E M N C E A S H Source: Peer data per Bloomberg market data as of February 15, 2022. OUR VALUATION VERSUS PEERS Avient Specialty Formulators Other Chemical/Specialty Companies 5.4 8.5 10.1 10.0 15.7 15.0 14.2 12.7 10.2 25.0 19.7 17.7 13.2 12.3 10.0 9.9 8.9 8.5 8.3 6.6 A vi en t (2 01 1) A vi en t (2 01 6) A vi en t (2 02 1) A vi en t (T o da y) R P M K W R P P G A V Y F U L A L B E C L H X L A S H F M C B N R E M N U N V R C E S C L H U N Historic Multiple SUMMARY: WHY INVEST IN AVIENT?

Processing Guidelines Base Resin PA6 Barrel Temperatures °F °C Rear Zone 440–470 227–243 Center Zone 450–480 232–249 Front Zone 460–490 238–254 Nozzle 470–500 243–260 Melt Temperature 470–500 243–260 Mold Temperature 120–180 49–82 Pack and Hold Pressure 50–75% of Injection Pressure Injection Velocity 0.5 in/s–3 in/s 13 mm/s–76 mm/s Back Pressure 50–100 psi 3.4–6.9 Bar Screw Speed 30–70 rpm Cushion 0.25 in 6.35 mm Drying Parameters 2–4 Hours @ 180°F 2–4 Hours @ 82°C Moisture % Allowable 0.08–0.18%* Screw Type General Purpose Screw Screw Compression Ratio 2.0:1– 2.5:1 Screw L/D 20:1 Non-return Check Valve Free Flow Check Ring Nozzle Type Reverse Taper Clamp Pressure 2–3 Tons/in² Barrel Capacity 30-80% of barrel should be used * Avient suggests measuring moisture using a Karl Fischer method or Vapor Pro® moisture analyzer that titrates only for moisture. HDPE is not recommended for purging as it can cause delamination or lead to black specks. Only naturally balanced runner systems (“H” pattern) are recommended 4.

Utilizing the Social Plastic from Plastic Bank, two new Maxxam™ REC Recycled Polyolefin formulations were developed, one in each RAL color requested. The Maxxam REC Recycled Polyolefin formulations met the required technical specifications, including good UV resistance, scratch resistance, impact resistance, and with a matte finish, making them suitable for use in the cubyko leaf waterproof outdoor socket. THE IMPACT The new Maxxam REC Recycled Polyolefin formulations from Avient enabled Hager to bring the new cubyko leaf to market quickly, with a first launch in the French market in January 2024.

The specialty polymer solution from PolyOne meets relevant safety standards, including a UL94-V0 flame class rating at 3mm thickness, and offers Sylumis significant production efficiencies via injection molding in place of metal forming.

Avient’s development team went back to work and quickly developed a flame-retardant grade that meets UL requirements for a V0 rating.