TARGET APPLICATIONS Excelite additives are available for numerous foaming applications, such as profiles, siding, decking, molding and pipe.

Requirements: High density injection molded plastic for weighting and balancing and noise isolation from spring mechanism Solution: Trilliant™ Gravi-Tech™ Density Modified Formulations 7 Soft touch grip 8 Weighted shell Color, Material & Finish Differentiate the same base injector for multiple price points, medications, or even licensing opportunities with body and grip material, color and texture. • Design conceptualization and rendering services can help bring your vision to life and embody your brand • Recommendations on overmolding and texture will optimize your production and performance Avient Corporation 7 Dampener 11 Stopper 12 9 Plunger 10 Avient Corporation 8 Internal Mechanical Performance Performance and reliability are vital when designing for more effective treatments and better patient outcomes.

APPLICATION BULLETIN DIMENSIONAL STABILITY Tight tolerances, minimal warp SOLUTION: Long fiber reinforced composites with polyketone (PK) POSSIBILITIES: Roof rack structures, running boards, brackets, component housings STRENGTH High strength- to-weight ratio, comparable to metal SOLUTION: Long fiber reinforced composites POSSIBILITIES: Tubular door frames, accessory motor mounts, tailgate locking systems MANUFACTURING EASE Injection moldable, design freedom, insert molding, part consolidation SOLUTION: Long fiber reinforced composites POSSIBILITIES: Seating shells, seat base components, tubular door frames, accessory linkages IMPACT RESISTANCE Durable in rugged environments and uses SOLUTION: Maximum toughness long fiber reinforced composites POSSIBILITIES: Side steps, bed steps, roof racks, brackets, bed extenders, tie downs CORROSION RESISTANCE Metal replacement, eliminate secondary coatings SOLUTION: Long fiber reinforced composites POSSIBILITIES: Underbody skid plate components, fuel doors, fasteners SUSTAINABILITY PIR/PCR content incorporation with high strength, lightweighting for fuel economy SOLUTION: Recycled content long fiber reinforced composites POSSIBILITIES: Roof rack structures, fender flares, rail covers, tail light protectors LIGHTWEIGHTING 30–40% weight reduction when switching from metal SOLUTION: Long carbon fiber reinforced composites POSSIBILITIES: Motor mounts, seating components, accessory mounts EXTREME PERFORMANCE High and low temperature performance, maintained properties with UV exposure, moisture performance SOLUTION: Long fiber reinforced composites POSSIBILITIES: Tail light protectors, fender flairs, guards, underbody components SURFACE AESTHETICS Color matches, fiber-rich or glossy surfaces, carbon fiber appearance SOLUTION: Moisture-resistant long fiber reinforced composites POSSIBILITIES: Lighting bars, side steps, bed steps, bike mounting brackets, cargo carriers NEXT-GEN UPGRADES Transform your aftermarket parts with efficient, lightweight long fiber thermoplastic solutions that redefine performance with strength, toughness, and design freedom.

CAFE: Corporate Average Fuel Economy >50% Improvement REDUCE – TAKEAWAY Reducing Energy Consumption and Dependence on Fossil Fuels Drives Growth Projections Examples Covered Today 45% Other Applications 55% 2022PF $310M 38 46 CAFE1 Miles Per Gallon Proposed Requirements HOW WE ENABLE SUSTAINABILITY Preserve Woon Keat Moh Senior Vice President, President of Color, Additives and Inks – Americas and Asia Avient Corporation 61 PRESERVE Avient Corporation 62 KEY CUSTOMER CHALLENGES: • Preserving Key Natural Resources - Companies are being challenged to mitigate high environmental impact processes such as water-intensive textile dyeing or food spoilage • Incorporating Renewable Materials - Adoption of bio-based raw materials requires design and formulation expertise to overcome performance shortcomings of neat resins • Increasing Healthcare Regulations - Utilizing sustainable materials in healthcare applications requires considerable support in navigating complex regulatory requirements • Increasing Regulatory Compliance - Non-Intentionally Added Substances (NIAS) need to be controlled in sensitive applications • Enabling Faster and More Reliable Connectivity – Substantial investments in 5G infrastructure are required to unlock the potential of the Internet of Things Solutions to preserve and protect natural resources & human life Avient Corporation 63 Spin Dyed Precolor Textile Yarn Renol™ Spin Dyeing Colorants • Replaces water-based dye processes to reduce waste creation • Conserves water and energy 75% LESS WATER PROTECTIVE DENIM Dyneema® Workwear Solutions • Improves tear resistance 50-100% • More protective than competitive alternatives • Enables the amount of protective fiber to be reduced without sacrificing performance 600% IMPROVED ABRASION RESISTANCE Clothing & Textiles 2022 Revenue: $49M Avient Corporation 64 Low Cure Textile Inks Avient Specialty Inks™ Low Cure Inks • Decreases energy consumption • Reduces scrap due to heat-related defects SAVES ENERGY Clothing & Textiles 2022 Revenue: $40M BIO-BASED FORMULATIONS Water Based Textile Inks Zodiac™ Aquarius™ Specialty Inks • Incorporates bio-based materials • Non-formaldehyde solutions available • Reduces waste by enabling high open screen time Avient Corporation 65 Mosquito Netting Cesa™ Fiber Anti-Mosquito Additives • Helps control malaria • Protects consistently using a controlled release of insecticide • Expands access to healthcare breakthroughs to global communities ANNUAL NEW MALARIA CASES 200 Million Antimicrobial Protection Cesa™ WithStand™ Antimicrobial Additives • Reduces microbial / mold growth • Helps reduce odor, staining, discoloration • Excellent comfort and wearability • Chemical resistance - will not discolor or degrade REDUCES MICROBES Human Health & Safety 2022 Revenue: $5M Avient Corporation 66 Cut-Resistant Gloves Dyneema® Solutions • Incorporates bio-based materials • Reduces carbon emissions • Excellent wearability / comfort WORK INJURIES REDUCES Rescue Rope Dyneema® Solutions • Superior strength-to-weight ratio • High break load • Extraordinary reliability SAVES LIVES Human Health & Safety 2022 Revenue: $106M Body Armor Dyneema® Protective Solutions • Exceptional trauma protection • Excellent wearability LIGHTER THAN ARAMID FIBER 35% Avient Corporation 67 40% BIO-DERIVED Pharmaceutical Tubing Versaflex™ Healthcare Pharma Tubing Formulations NEU™ Specialty Engineered Materials • Facilitates incorporation of sustainable materials with healthcare device manufacturers • Eliminates vulcanization processes Medical 2022 Revenue: $40M NON-PHTHALATE Respiratory Conduit Versaflex™ Healthcare Corrugated Tubing Formulations • Non-Phthalate • ISO 10993 & USP Class VI compliant Avient Corporation 68 100% UP TO BIO-BASED CARRIER Medical Devices Mevopur™ Bio-Based Colorants • Minimizes risk through pre-testing • Provides vital regulatory compliance • Minimizes global supply chain risk with validated backup supply Continuous Glucose Monitoring and Auto Injectors Trilliant™ Healthcare Polymer Solutions • Impact performance • Chemical resistance ENABLES HOME CARE Medical 2022 Revenue: $16M Avient Corporation 69 Fiber Optic Cable and Jacketing Fiber-Line™ Optical Fiber Cable Components • Reduction in weight & energy usage • Thermal and abrasion resistant • Extends product life ENABLES CONNECTIVITY Cable Micromodules ECCOH™ Low Smoke Formulations • Non-halogen • Low smoke and toxicity SUPPORTS SUSTAINABLE INFRASTRUCTURE Base Station Components Edgetek™ Low-Density Formulations • Low density – lighter weight • Low warpage & thermal conductivity EXTENDS PRODUCT LIFE Antenna Components PREPERM™ Low Loss Dielectric Formulations • Replaces costly ceramics • Consistent and efficient antenna performance ENHANCES PERFORMANCE 5G Infrastructure 2022 Revenue: $39M Avient Corporation 70 “Nike has partnered with Avient extensively over the years because of their leadership in eco-friendly screen printing inks.” Per Carlsson, Manufacturing and Operations CUSTOMER TESTIMONIALS Avient Corporation 71 50 90 0 20 40 60 80 100 2022 2030 Medical Plastics Market Size PRESERVE – TAKEAWAY Protecting Human Life and Enabling Connectivity Drives Growth Projections Examples Covered Today 56% Other Applications 44% 2022 $525M (in $ Bi lli on s) 8% CAGR 34% CAGR 5G Infrastructure Market Size 12 92 0 10 20 30 40 50 60 70 80 90 100 2023 2024 2025 2026 2027 2028 2029 2030 (in $ Bi lli on s) Source: Grand View Research Source: Global Data Summary Jamie Beggs Senior Vice President and Chief Financial Officer Avient Corporation 72 OUR SUSTAINABILITY REPORT Avient Corporation 73 Avient Corporation 74 2030 SUSTAINABILITY GOALS Avient Corporation 75 PERFORMANCE AND RECOGNITION 1 2 5 ESG Ratings Performance ESG Awards and Certifications top 13% 94th percentile Avient Corporation 76 SUSTAINABILITY INNOVATION AWARDS Ultra-Low Carbon Footprint TPE Innovation Award, Finalist: Plastics Industry Association PCR Colorants + Additives Sustainable Packaging Innovation, Finalist: U.S.

Seller warrants good and clear title in goods subject to the sale (“Product”) and that the Product con- forms at the time of shipment to a Certificate of Analysis, a Cer- tificate of Compliance, or a Product Specification Sheet, if any such document exists, and other specifications signed by Seller (“Specifications”). Säljaren garanterar att de produkter som är föremål för försäljningen (”Produkten”) är fria från rättsliga fel och att Produkten vid leveranstidpunkten stämmer överens med ett så kallat ”Certificate of Analysis”, ett ”Certificate of Compliance” eller ett ”Product Specification Sheet”, om något sådant existerar, och med andra specifikationer undertecknade av Säljaren (”Specifikationer”).

President, Marmon Utility (a manufacturer of medium-high voltage utility, subsea and down-hole power cables and molded insulator systems) from 2011 to 2013. s/ Ernst & Young LLP Cleveland, Ohio February 22, 2022 Exhibit 31.1 CERTIFICATION I, Robert M. AVIENT CORPORATION Exhibit 32.2 CERTIFICATION PURSUANT TO 18 U.S.C.

WithStand™ Antimicrobial Technology provides antimicrobial and antifungal additives that reduce bacterial, mold and fungal growth in finished plastic parts used in hospital surfaces. Through this data, we create safety data sheet sand customer certification statements for intended use and product safety improvements. Combined, Avient facilities have a total of 286 management system certifications.

a wholly-owned subsidiary of Avient Corporation NAME BASE RESIN(S) AVAILABLE FEATURES1 Trilliant™ ABS, LCP, PA, PC, ABS, PA 6, PA 66, PC/ABS, PC/PSU, PEBA, PEEK, PES, POM, PPA, PSU Certified to USP Class VI Formulations locked down Drug master file submissions by product stewardship Pre-colored, small lot production down to 50 lb–250 lb Sterilization, chemical resistance, and secondary process guidance Adherence to FDM-GMP manufacturing standards Antimicrobial technologies Materials for radiation shielding protection NEU™ Specialty Materials2 PEBA, TPU, PA 11, PA 12, PP, PE, TPE Radiopacifiers, stabilizers, and surface modifiers Antimicrobial technologies Pre-colored formulations Small lot capabilities Short lead times Versaflex™ HC TPE Overmolding Clear and heat resistant Ultra clear grades Ultra soft TPE gels, 30 shore OO FDA, USP Class VI, ISO 10993 approved grades Sterilizable under autoclave, radiation, and EtO gas Extrusion, injection, and blow moldable HEALTHCARE SPECIALTY THERMOPLASTICS NAME BASE RESIN(S) TARGET MARKETS AVAILABLE FEATURES1 reSound™ R Recycled Formulations PA6, PA66, PC Transportation, Consumer, Household Appliance, Electrical & Electronics, Industrial PA grades: Up to 100% recycled content PC grades: Up to 70% recycled content PIR and PCR grades available Support the circular economy Comparable performance to prime grades Customizable solution Surround™ ABS, PP, PBT, PC, PA 66 Transportation, Electrical & Electronics Integrated EMI/RFI shielding Long fiber technology Conductive properties Galvanic corrosion protection Lightweighting and ease of processing Stat-Tech™ ABS, PA, PC, PC/ABS, PC/PSU, PEEK, PEI, PES, PP, PPA Transportation, Electrical & Electronics Integrated EMI/RFI shielding Conductive properties Anti-static/dissipative properties Corrosion resistance Lightweighting and ease of processing Clean room materials for semiconductors available Therma-Tech™ LCP, PA, PEEK, PP, PPA, PPS Consumer, Transportation Thermally conductive Low coefficient of thermal expansion Corrosion resistance SPECIALTY ENGINEERED THERMOPLASTICS NAME BASE RESIN(S) TARGET MARKETS AVAILABLE FEATURES1 Barricade™ Elastomers with Fortrex™ Technology Barricade™ high-performance elastomers bring next genera- tion technology to market to bridge the gap between tradi- tional TPEs and silicone Healthcare, Industrial Aerospace, Appliances, Electronics High temperature compression set Processes on thermoplastic injection molding and extrusion equipment Customizable and colorable Process simplicity CROSSLINKABLE ELASTOMERS Barricade formulations leverage licensed Fortrex™ technology.

FX +4.6% FX -1.5% Total Avient +3.1% Note: Regional Sales Percentages exclude impact of foreign exchange Q2 2024 SEGMENT PERFORMANCE (COLOR, ADDITIVES & INKS) $525 $542 Q2 23 Q2 24 $94 $108 Q2 23 Q2 24 19.9% Sales Adjusted EBITDA (in millions) (in millions) Sales Adjusted EBITDA 10 17.9% +200 bps * * * Adjusted EBITDA Margin % • Organic sales growth in all regions led by Americas • Raw material deflation combined with cost reduction actions drove EBITDA margin expansion + 3% (+5% excluding FX) + 15% (+17% excluding FX) Q2 2024 SEGMENT PERFORMANCE (SPECIALTY ENGINEERED MATERIALS) $301 $308 Q2 23 Q2 24 $60 $64 Q2 23 Q2 24 20.6% Sales Adjusted EBITDA (in millions) (in millions) Sales Adjusted EBITDA 11 19.8% +80 bps * * * Adjusted EBITDA Margin % • Sales growth in consumer, healthcare and building & construction end markets offset by weaker demand in telecommunications • EBITDA margin expansion driven by positive end market mix as well as raw material deflation + 2% (+4% excluding FX) + 7% (+8% excluding FX) 2024 G U IDA N CE FY 2024 GUIDANCE Previous (May 7) Current Adjusted EBITDA $510 to $535 million $515 to $540 million Adjusted EPS $2.50 to $2.65 $2.55 to $2.70 Interest Expense $105 million $105 million Adjusted Effective Tax Rate 23% to 25% 23% to 25% Capital Expenditures ~$140 million ~$140 million 13 Q3 2024: Adjusted EPS of $0.62 14 Highlights • Provides performance updates on 2030 Sustainability Goals • Reduced company’s Scope 1 & 2 GHG emissions by 48% since 2019 • Highlights ESG performance ratings, certifications, and awards, including recent upgrades by Ecovadis to Gold and CDP to A- • Reflects Great Place to Work® culture focused on health, safety and employee engagement 2023 SUSTAINABILITY REPORT 14 Sustainability for a Better Tomorrow 2023 SUSTAINABILITY REPORT 15 • Investor Day to be held December 4, 2024 in New York, NY • The focus will be to do a deep dive on the Company’s strategy • Further details to be communicated 2024 AVIENT INVESTOR DAY AP P EN D IX 18 Performance Additives 15% Pigments 13% TiO2 9% Dyestuffs 2% Polyethylene 10%Nylon 5% Polypropylene 4% Styrenic Block Copolymer 4% Other Raw Materials 38% ~40% hydrocarbon based (Grey shaded materials are hydrocarbon based, includes portion of “Other Raw Materials”) Non-hydrocarbon based materials RAW MATERIAL BASKET SEGMENT DATA U.S. & Canada 41% EMEA 36% Asia 18% Latin America 5% 2023 SEGMENT, END MARKET AND GEOGRAPHY GEOGRAPHY REVENUESEGMENT FINANCIALS Consumer 19% Packaging 23%Industrial 16% Building and Construction 9% Telecommunications 4% Energy 5% Defense 7% END MARKET REVENUE $2,007M $358M $1,138M $224M Sales EBITDA Specialty Engineered Materials Color Additives and Inks $502M$3,143M (1) Transportation 10% Healthcare 7% 20 (1) Total company sales and adjusted EBITDA of $3,143M and $502M, respectively, include intercompany sales eliminations and corporate costs 2023 REVENUE | $2 .0 B ILL ION US & Canada 34% EMEA 37% Asia 21% Latin America 8% END MARKET REGION 21 Packaging 34% Consumer 21% Healthcare 8% Industrial 15% Transportation 9% Building & Construction 10% Telecommunications 1% Energy 2% COLOR, ADDITIVES & INKS 2023 REVENUE | $1 .1 B ILL ION US & Canada 52% EMEA 35% Asia 13% 22 Packaging 5% Consumer 16% Healthcare 6%Industrial 16% Transportation 12% Telecommunications 9% Energy 10% Defense 18% Building & Construction 8% END MARKET REGION SPECIALTY ENGINEERED MATERIALS Packaging 32% Consumer 26% Healthcare 9% Industrial 13% Building & Construction 6% Telecommunications 2% Energy 2% Defense 1% Asia (18% of sales) Transportation 9% 2023 AVIENT REGIONAL SALES Packaging 25% Consumer 13% Healthcare 5% Industrial 18% Building & Construction 9% Energy 5% Defense 8% EMEA (36% of sales)Transportation 13% Packaging 13% Consumer 22% Healthcare 10% Industrial 16% Building & Construction 12% Energy 6% Defense 8% US & Canada (41% of sales) Transportation 9% Packaging 59% Consumer 22% Healthcare 2% Industrial 8% Building & Construction 4% LATAM (5% of sales) Transportation 5% Telecommunications 4% Telecommunications 4% 23 BY END MARKET Reconciliation of Non-GAAP Financial Measures (Unaudited) (Dollars in millions, except for per share data) Senior management uses comparisons of adjusted net income from continuing operations attributable to Avient shareholders and diluted adjusted earnings per share (EPS) from continuing operations attributable to Avient shareholders, excluding special items, to assess performance and facilitate comparability of results.

LIQUID FIBER PRODUCT FEATURES Multiple color production • Depending on the manufacturing set-up, several injection points can be added to enable multiple color production at the same time on a single extruder Batch size flexibility • Fiber producers can manufacture anything from a few kilograms to hundreds of tons using the same simple process Rapid color changes • No extruder contamination and easy color-on, color-off operation increases color change speed Waste reduction • Rapid color changes, precise metering and the ability to adjust color in-line reduces waste during color changeovers Continuous metering & long spin pack life • High pigment and dye concentrations mean fewer pack changes are required • Where color is running low for larger volume runs, low level metering sensors alert operators and packs can be changed without disrupting production In-line IV adjustment • Specialist additives are available to adjust Intrinsic Viscosity (IV) in-line for rPET applications • These additives are available as single products, or can be combined with color to create a multi-functional formulation Color design service • ColorMatrix offers a dedicated color design service to help shorten product development cycles and enhance market agility Liquid color processing • Formulations are stable at temperatures up to 60°C and retain good flow properties at temperatures as low as 10°C • These formulations can help lower yarn friction and abrasion, and there is no fuming or evaporation during production COLORMATRIX FLEXCART LIQUID DOSING SYSTEMS Designed to optimize the benefits of liquid colorant and additive technologies, each ColorMatrix™ FlexCart™ model is highly flexible, and offers high-level dosing accuracy and controllability for all injection molding and extrusion applications.