Following are top reasons why many manufacturers and designers choose high-performance thermoplastics: • High-temperature resistance • Chemical resistance • Flame/smoke/toxicity (FST) performance • Chemically inert PLUS, ALL THE BENEFITS OF PLASTIC In addition to their elite-level properties, high-performance thermoplastics deliver the typical advantages of polymers over other material types such as metal, glass and ceramic, including: • Light weight • Design freedom/part consolidation • Easy colorability • Efficient, high-volume processing • Elimination of secondary operations • Enhanced product experience for the end user - quieter environment - improved tactile feel - better usability ADVANTAGES Going Above and Beyond • Amorphous structure • High marks for toughness, chemical resistance, hydrolytic stability, resistance to boiling water, and extreme thermal capabilities • Best for: aerospace interiors, hot water fittings, and medical and dental devices that are subjected to repeated steam sterilization • Also used in food equipment exposed to temperature extremes, such as coffeemakers or freezer-to-microwave cookware Polyaryletherketones Polysulfones Liquid crystal polymers Polyetherimides Polyphenylene sulfides There are five major families of high-performance thermoplastics PO LY AR YL ET H ER KE TO N ES PO LY SU LF O N ES• Semi-crystalline structure • High marks for thermal stability, chemical resistance and mechanical properties over a wide temperature range • Better-than-average levels of combustion resistance and electrical performance • Some PAEK materials, like polyetheretherketone (PEEK), are also extremely tough and have excellent impact strength • Best for: aerospace, automotive, industrial and medical components • May be used to create stock shapes such as rods, bars, and tubes All in the Family PO LY PH EN YL EN E SU LF ID ES • Semi-crystalline structure • Excellent temperature resistance with continuous service temperatures up to 230°C • High marks for modulus and resistance to creep, corrosion, and chemicals • Above-average electrical properties • Best for: complex parts with extremely tight tolerances; often used as an alternative to metals and thermosets in automotive underhood parts, appliances, electronics, and industrial applications Polyaryletherketones Polysulfones Liquid crystal polymers Polyetherimides Polyphenylene sulfides There are five major families of high-performance thermoplastics PO LY ET H ER IM ID ES LI Q U ID C RY ST AL P O LY M ER S • Semi-crystalline structure • High degree of anisotropy: strength, stiffness and thermal expansion will be greater in one direction vs. the other • High marks for temperature, chemical and electrical resistance • Exceptional mechanical strength and high flow rates; often used to fill extremely long parts with thin walls • Best for: electronic connectors, sensors, bullet-resistant vests, jet engine enclosures, brake and transmission friction parts, and gaskets • Amorphous structure • High marks for thermal, mechanical, and chemical properties • Often selected for demanding applications requiring ultra-high mechanical strength combined with high temperature, corrosion and wear resistance • Impact resistance may be lower than that of PSUs and PAEKs • Best for: aerospace interiors, automotive lighting, medical devices, and electrical and fiber optic connectors All in the Family Source: https://www.craftechind.com/standard-and-custom-parts-in-high-performance-plastics/ TEMPERATURE AND MATERIAL TYPE The two broad classifications of high-performance thermoplastics—amorphous and semi-crystalline— have different temperature characteristics.

Microsoft PowerPoint - PolyOne Investor Presentation 5.4.20_v8 • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • P E O P LE P RO D U CT S P LA N E T P E RF O R MAN C E •• •• •• JVs Performance Products & Solutions Distribution Specialty     To be the world’s premier provider of specialized polymer materials, services and solutions To be the world’s premier provider of specialized polymer materials, services and sustainable solutions • • • • • • • • • • • • • • 2016 2017 2018 2019 Lightweighting Reduced Material Requirements Improved Recyclability Renewable Energy Applications Eco-conscious Bio-derived Content Reduced Energy Use VOC Reduction $275M $325M $355M $410M 14% Total Annual Growth 9% Organic Annual Growth PolyOne Corporation 33 Senior management uses comparisons of adjusted net income from continuing operations attributable to PolyOne shareholders and diluted adjusted earnings per share (EPS) from continuing operations attributable to PolyOne shareholders, excluding special items, to assess performance and facilitate comparability of results.

VALUE BENEFITS OF USING THE FLEXCART NANO SYSTEM The FlexCart Nano metering system is market leading: • Robust and dependable system control • Reliable yield (typically above 90%) and sustainable packaging • Fully supported technology • Small footprint designed for very low throughputs FLEXCART™ NANO LIQUID METERING SYSTEM Combined with the PlanetPak™ delivery packaging ATTRIBUTE FLEXCART NANO Footprint (LxW cm) 55 x 30 Controller options 3000 Typical max. throughput (kg/hr) 50 Max. metering rate (cc/s) 1.8 Continuous use No Transfer pumps N/A Metering pumps Peri Interchangeable cassette No Note: Peri = Peristatic Pump PLANETPAK™ CONTAINERS The FlexCart range of metering systems is designed to work with the standardized Avient range of packaging, typically achieving 99% reliable yield on continuous operating systems, and at the same time achieving a sustainable packaging format in terms of full recyclability.

Key Features • Excellent heat & flame resistance • High chemical resistance • Low thermal shrinkage • Self-extinguishing flame retardant properties • Soft-hand yields good textile properties Disadvantages • Low tenacity • Low modulus FIBER-LINE® PROCESS FOR NOMEX® META-ARAMID • Coating • Twisting • Precision Winding FIBER-LINE® NOMEX® PRODUCTS • Packing Yarn • Wire Harness Yarn • Industrial Fabric Yarn Property UOM Value Breaking Tenacity g/d 5.0 Specific Gravity Ratio 1.38 Elongation @ Break % 30.0 Tensile Modulus g/d 125 Moisture Regain* % 4.5 Creep** % N/A Shrinkage*** % .4 Melt Point °C None Decomposition Temp.

WIRE HARNESS YARN FIBERS PROCESS PRODUCTS Product ID FIBER-LINE® Coating Base Fiber Break Strength Yield Geometry Nominal Diameter Description NX1200T FIBER-LINE® WearcoatTM FIBER-LINE® ColorcoatTM Nomex 13 LBs (5.9 KGs) 9930 FT/LB (6672 M/KG) Round/Flat .438mm High-temperature resistant coating with colorant for identification K400T FIBER-LINE® WearcoatTM Kevlar® 20 LBs (9.1 KGs) 30303 FT/LB (20362 M/KG) Round/Flat .245mm High-temperature resistant coating NX1200 1x3 FIBER-LINE® ColorcoatTM Nomex 39.9 LBs (18.1 KGs) 3225 FT/LB (2167 M/KG) Round .815mm Color coated for identification G150 1x3 FIBER-LINE® WearcoatTM Glass 16.7 LBs (7.6 KGs) 12987 FT/LB (8726 M/KG) Round .372mm High-temperature resistant coating NX200T N/A Nomex 2.5 LBs (1.1 KGs) 68166 FT/LB (45804 M/KG) Round/Flat .168mm Fiber twisted to improve handling MOVING HIGH PERFORMANCE FIBERS FORWARD This data is provided for informational purposes only, and does not constitute a specification.

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 FR P C/ AB S FR P C/ PE T FR P C/ PB T Ed ge te k™ E T8 90 0 CR Ed ge te k™ E T8 90 0 H I C R Ed ge te k™ E T8 92 0 FR 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.

VALUE BENEFITS OF USING THE FLEXCART MICRO SYSTEM The FlexCart Micro metering system is market leading: • Robust and dependable system control • Reliable yield (typically 95%+) and sustainable packaging • Capability of data networking and remote internet support • Small footprint & LN standard recyclable delivery packaging FLEXCART™ MICRO LIQUID METERING SYSTEM Combined with sustainable delivery packaging ATTRIBUTE FLEXCART MICRO Footprint (LxW cm) 60 x 35 Controller options 3000 5000 Typical max. throughput (kg/hr) 250 Max. metering rate (cc/s) 10 Continuous use No Transfer pumps N/A Metering pumps PC/Peri Interchangeable cassette Yes Note: PC = Progressing Cavity Pump Peri = Peristatic Pump PLANETPAK™ CONTAINERS AND LN PACKAGING OPTIONS The FlexCart suite of metering systems is designed to work with the standardized PolyOne range of packaging typically achieving 99% reliable yield on continuous operating systems, while at the same time also achieving a sustainable packaging format in terms of full recyclability.

Who We Are Personal Values INTEG R IT Y R E SP ECT H O N E S T Y Core Values COLLABO R A T IO N E X C E LL ENCE INNOVATION HOME | Contents | Message from the CEO | Who We Are | People | Products | Planet | Performance | Goals & Metrics | Indices Sustainability Report | 2019 7 https://responsiblecare.americanchemistry.com https://endplasticwaste.org/about/ http://www.avient.com What We Do: Material Science Avient’s vision is to create specialized and sustainable material solutions that transform customer challenges into opportunities, bringing new products to life for a better world. In this way, we also keep today’s waste from becoming tomorrow’s contamination. 52% Total Waste RECYCLED OR BENEFICIALLY REUSED IN 2019 0 ZERO Reportable Releases IN EXCESS OF PERMITTED LEVEL TO THE ENVIRONMENT SINCE 2013 0 3,000 6,000 9,000 12,000 15,000 2016 2017 2018 2019 Total Waste 0 5 10 15 20 25 Total Waste Intensity 2016 2017 2018 2019 K g W as te /M T P ro d u ct io n M e tr ic T o n s HOME | Contents | Message from the CEO | Who We Are | People | Products | Planet | Performance | Goals & Metrics | Indices Sustainability Report | 2019 67 Eliminating Plastic Waste Plastic is a miraculous, versatile material that positively impacts our world. We were very pleased to again be recognized for our Board diversity by 2020 Women on Boards, with 30% of our Board being women. 20202020 2 0 % B Y 2 0 2 0 W O M E N O N B O A R D S AVERAGE TENURE 6.5 years AVERAGE AGE 60 GENDER DIVERSITY 30% women “Avient fully understands and values the responsibility of creating a sustainable global business.

Who We Are Personal Values INTEG R IT Y R E SP ECT H O N E S T Y Core Values COLLABO R A T IO N E X C E LL ENCE INNOVATION HOME | Contents | Message from the CEO | Who We Are | People | Products | Planet | Performance | Goals & Metrics | Indices Sustainability Report | 2019 7 https://responsiblecare.americanchemistry.com https://endplasticwaste.org/about/ http://www.avient.com What We Do: Material Science Avient’s vision is to create specialized and sustainable material solutions that transform customer challenges into opportunities, bringing new products to life for a better world. In this way, we also keep today’s waste from becoming tomorrow’s contamination. 52% Total Waste RECYCLED OR BENEFICIALLY REUSED IN 2019 0 ZERO Reportable Releases IN EXCESS OF PERMITTED LEVEL TO THE ENVIRONMENT SINCE 2013 0 3,000 6,000 9,000 12,000 15,000 2016 2017 2018 2019 Total Waste 0 5 10 15 20 25 Total Waste Intensity 2016 2017 2018 2019 K g W as te /M T P ro d u ct io n M e tr ic T o n s HOME | Contents | Message from the CEO | Who We Are | People | Products | Planet | Performance | Goals & Metrics | Indices Sustainability Report | 2019 67 Eliminating Plastic Waste Plastic is a miraculous, versatile material that positively impacts our world. We were very pleased to again be recognized for our Board diversity by 2020 Women on Boards, with 30% of our Board being women. 20202020 2 0 % B Y 2 0 2 0 W O M E N O N B O A R D S AVERAGE TENURE 6.5 years AVERAGE AGE 60 GENDER DIVERSITY 30% women “Avient fully understands and values the responsibility of creating a sustainable global business.

ANNUAL REPORT 2021 CREATING A WORLD-CLASS, SUSTAINABLE ORGANIZATION A V IE N T C O R P O R A T IO N A N N U A L R E P O R T 2021 CORPORATE OFFICERS ROBERT M. Weighted-average assumptions used to determine net periodic benefit cost for the years ended December 31: Pension Benefits Health Care Benefits 2021 2020 2019 2021 2020 2019 Discount rate* 2.47 % 3.19 % 4.11 % 2.66 % 3.06 % 3.98 % Expected long-term return on plan assets* 4.86 % 5.05 % 5.68 % — — — Assumed health care cost trend rates at December 31: Assumed health care cost trend rates at January 1: N/A N/A N/A 6.24 % 6.16 % 6.09 % Rate to which the cost trend rate is assumed to decline (the ultimate trend rate) N/A N/A N/A 4.04 % 4.14 % 4.50 % Year that the rate reaches the ultimate trend rate N/A N/A N/A 2066 2054 2027 *The mark-to-market component of net periodic costs is determined based on discount rates as of year-end and actual asset returns during the year. AVIENT.COM A V IE N T C O R P O R A T IO N A N N U A L R E P O R T 2021