CABLE MANUFACTURER C A B L E J A C K E T • Operating temperature from -40°C to 70°C • High gel resistance • Low shrinkage • Strippable for easy installation • Good flame retardancy • Developed a formulation with oil resistance as per the NEK 606 technical specification • Allowed our customer to use the same cable design in various climates due to its wide operating temperature range • Provided expertise to improve manufacturing efficiencies, helping the customer achieve higher processing speeds ECCOH LSFOH 5806 Formulation KEY REQUIREMENTS WHY AVIENT?

Baby diaper manufactureR BABY DIAPER MANUFACTURER P P N O N W O V E N M U L T I L A Y E R S • Provide slip additives with high concentrated content • Offer products meeting customer FDA requirements • Shorten supply lead time and reduce cost compared with importing from EU • Offered additives with high concentrated content, which is unachievable for competitors • Provided regulatory support, significant cost and time savings • Compressed the timeline through on-site color visualization, exploration, and formulation of new colors by the expert designer Cesa Slip Additives KEY REQUIREMENTS WHY AVIENT?

Medical gown manufacturer MEDICAL GOWN MANUFACTURER P P N O N W O V E N M U L T I L A Y E R S • Excellent anti-microbial and anti-virus performance • Pass JIS Test • Provide technical support including specific specs, processing and molding recommendations • Customized anti-virus solutions designed to support performance standards for materials used in the surgical environment • Provided technical support for material selection, part & tool design, and process development to accelerate commercialization • Supported customer’s products pass the JIS test Cesa WithStand Antimicrobial Additives KEY REQUIREMENTS WHY AVIENT?

FABRIC MASK MANUFACTURER P P N O N W O V E N M U L T I L A Y E R S • Meet regulatory requirements for the application • Provide technical support including specific color, processing and molding recommendations • Deliver a highly hydrophilic performance • Developed a compliant additives solution to meet necessary regulatory specifications • Provided technical expertise throughout the design and manufacturing process • Offered an effective solution to make it soft touch while hydrophilic Cesa Fiber Additives KEY REQUIREMENTS WHY AVIENT?

The results were impressive: • Better tension set, improved compression and enhanced permeability • Slashed $70,000 from production costs by reducing cycle times and eliminating assembly steps • Lower specific gravity of TPEs trimmed overall part weight, which cut $36,000 in annual freight costs • Reprocessability of TPEs shrank scrap rates, saving more than $70,000 in material waste SWITCH TO TPEs BOOSTS BOTTOM LINE CASE STUDY READ MORE ONLINE For a manufacturer seeking to redesign a liquid injection-molded silicone medical pump valve insert, Avient suggested custom-formulated grades of Dynalloy™ OBC and Versaflex™ TPEs that would deliver better multi-functional performance than the previous design, while also facilitating easier two-shot molding.

ACTIVE INGREDIENTS RESISTANCE RATING Clorox® Disinfecting Wipes 5813-79 Quaternary ammonium +++++ +++++ +++++ ++ +++ ++++ Formula 409® Heavy Duty Degreaser N/A Lauramine oxide, ethanolamine +++++ +++++ +++++ + ++ +++ Lysol® All-Purpose Cleaner 777-66 Quaternary ammonium +++++ +++++ +++++ + + ++ $$$ $$$ $$$$ $ $$$ $ MATERIAL COMPARISON WITH COMMON CONSUMER DISINFECTANTS P AB S P PE T P PB T E 90 0 CR E 90 0 H I C R E 92 0 C RCRITERIA FOR RESISTANCE RATING + strength and elongation at yield retention between 90-110% + strength and elongation at yield retention between 75-125% + no statistically significant reduction in elongation at break (p < 0.05) + visual observation score of 4 or better (minor/no crazing, no cracks) + samples survived disinfectant exposure in strain jig Lysol® is a trademark of Reckitt Benckiser LLC Formula 409® is a trademark of The Clorox Company Clorox® is a trademark of The Clorox Company An independent, A2LA-accredited lab tested the following polymers with various disinfectants to help customers choose the material suitable for their specific application requirements.

Microsoft PowerPoint - AVNT Seaport Conference Presentation AVIENT CORPORATION S E A P O R T C O N F E R E N C E (NYSE: AVNT) A U G U S T 2 4 , 2 0 2 1 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. Q 2 2021 P E RFO R MA N CE U P DAT E $69 $122 $0.42 $0.87 Q2 2021 – ORGANIC PERFORMANCE 10 Sales Adjusted Operating Income $870 $1,235 + 42% + 77% + 107% (1) (1) (1) Q2 2021 SEGMENT PERFORMANCE 11 CAI $488 $624 ($ in millions) SEM Distribution $54 $86 +28% +59% $239 $404 $15 $24 +69% +60% $159 $241 $17 $37 +52% +118% SPECIALTY EBITDA MARGIN EXPANSION 12 CAI (1) 2018-2020 financial information is pro forma to include a full year of Clariant Masterbatch business acquisition 15.3% 15.2% 16.2% 18.5% 2018 2019 2020 YTD 2021 14.8% 15.2% 17.6% 19.1% 2018 2019 2020 YTD 2021 SEM • Continued portfolio transformation to high-growth end markets and sustainable solutions • Clariant Masterbatch synergy realization • Investments in composites and outdoor high performance applications drive growth and mix improvements CAI EBITDA MARGIN EXPANSION 13 Legacy CAI 18.9% 18.9% 20.3% 2019 2020 YTD 2021 Legacy 11.9% 13.8% 16.8% 2019 2020 YTD 2021 • Synergy capture translating to the bottom line • Positive mix with growth in healthcare, consumer and packaging end-markets • World-class vitality index of 35% represents sales from products introduced in the last five years. Whether an additional line at an existing manufacturing plant, or a new facility in a growing region, we ramp-up quickly and cost-efficiently. 29 Capex / Revenue 2021E (%) AVIENT IS ASSET LIGHT Avient Specialty Other 2 2 2 2 3 3 3 4 3 4 4 5 5 5 5 5 6 7 27 e nt e nt ( xc l.

AVIENT CORPORATION P R O F O R M A F I N A N C I A L S F O R D Y N E E M A A C Q U I S I T I O N A N D D I S T R I B U T I O N A S D I S C O N T I N U E D O P E R A T I O N S (NYSE: AVNT) S E P T E M B E R 2 7 , 2 0 2 2 DISCLAIMER Forward-Looking Statements Certain statements contained in or incorporated by reference into this presentation constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995.

POWER TOOL MANUFACTURER P I S T O N R I N G A N D C O N N E C T I N G R O D F O R P O W E R T O O L • Exceptional mechanical properties • Good wear and abrasion resistance • High purity and light weight • Worked directly with the manufacturer from design to molding to better understand and satisfy key requirements • Improved strength, stiffness and stability with one-stop technology service to best meet customer’s needs • Provided lightweighting solution to help customer achieve its sustainability goal Edgetek™ PK PEEK Formulation KEY REQUIREMENTS WHY AVIENT?

BOS B A T T E R Y S F R A M E • Recycled materials where possible • Non-halogen flame retardant performance to V0 rating • BOS company color RAL9004 (on visible parts) • Thermal performance for some parts • High strength at low thickness for load-bearing parts • Provided multiple polymer solutions for the battery frame including recycled nylon, thermoplastic elastomers and thermally conductive formulations • Utilized recycled nylon with up to 35% glass fiber content to provide high strength for load-bearing parts at a low thickness to minimize weight • Enabled customer to launch a new innovative battery system with a modular design for use in multiple applications – maximizing the working life of the battery Nymax™ REC Recycled Nylon Formulations and Therma-Tech™ Thermally Conductive Formulations KEY REQUIREMENTS WHY AVIENT?