UV stabilizers neutralize the physical and cosmetic damage caused by harmful light. UV and Light Blocking Additives

The recently launched Resilience™ LS material was chosen for its long-term color hold, UV stability and thin-wall 5VA flame retardance, more than meeting technical requirements for the Nuvi light. Rigid vinyl’s inherent flame retardance and UV resistance minimize the need for additives, reducing expense while maintaining protection for the LEDs, electronics and aesthetics.

UV Light Barrier for PET: ColorMatrix™ Ultimate™ Proprietary light barrier technology that protects your content from the harmful effects of UV rays

AVIENT CORPORATION S E C O N D Q U A R T E R 2 0 2 3 R E S U L T S (NYSE: AVNT) J U LY 2 7 , 2 0 2 3 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. Additionally, Adjusted EPS excludes the impact of special items and amortization expense associated with intangible assets. 2 COMPOSITES PORTFOLIO D Y N E E M A ® E X P A N D S O U R E N G I N E E R E D F I B E R S A N D P A N E L S T E C H N O L O G Y LFT Tapes Laminates/Panels Shapes Pultrusion Engineered Fibers 4 DEFENSE TELECOMMUNICATIONS ENERGY TRANSPORTATION Military • Law Enforcement First Responders Body Armor • Helmets Vehicle Protection Sustainable Infrastructure Offshore Wind Electrical Grid Protection EV Battery Components Commercial Laminates Body & Trim • Air Cargo and Railroad Car Panels 5G Applications Fiber Optic Cables Satellite Communications Connectors and Components 5 COMPOSITES SERVE DIVERSIFIED END MARKETS INDUSTRIAL Lifting Slings • Aquaculture High Pressure Pipe Conveyer Springs Q 2 P ER FO RM A N CE Q2 2023 PERFORMANCE VS. GUIDANCE 8 15.4% 15.9% Adjusted EBITDA Margin % Better-than-expected margins driven by: • Favorable mix - strong demand for composite applications • Raw material deflation Q2 EBITDA BRIDGE 9 ($ millions) CAI: Price / Mix 7) Deflation 11) SEM: Price / Mix 2) Deflation 6) Net Price Benefit 26) Wage and Energy Inflation (10) Cost Reductions 13) FX (2) Q2 2023 Actual $131) Adjusted EBITDA Q2 2022 Pro Forma $ 172) Demand (68) • Demand conditions vs. expectations: LATAM • Net price benefit remains greater than wage and energy inflation • Clariant synergies and reduced administrative costs Q2 2023 SEQUENTIAL SALES BY REGION Q 2 2 0 2 3 v s .

These methods of processing thermoplastic materials have been practiced since 80’s primarily by the automotive industry. Injection velocity, 5 in/s OM-1040 360 OM-1060 417 OM-1255 246 OM-1262 379 OM-6050-9 253 OM-6065-9 221 60A S-TPE 329 64A TPV 228 Table 5: Materials Temperature, C, Nozzle/Front/Middle/Rear Mold Temperature, C Injection Hi Pressure, psi OM1040 430/430/410/390 80 500 OM1060 430/430/410/390 80 600 OM1245 430/430/410/390 80 500 OM1262 430/430/410/390 80 800 OM6050 480/480/460/440 80 1000 OM6065 480/480/460/440 80 1200 B-TPE-35A 450/450/430/410 80 500 B-TPE-50A 450/450/430/410 80 800 B-TPE-65A 450/440/430/420 80 800 B.TPV-55A 480/480/470/460 80 800 B-TPV-55A 525/520/510/490 110 1500 B-TPV-70A 535/530/520/500/ 110 1500 Figure 2: Effect of overmold thickness on surface hardness on TPE products. 0.0 10.0 20.0 30.0 40.0 50.0 60.0 70.0 80.0 90.0 100.0 0 2 4 6 8 10 Thickness, mm H ar dn es s, S ho re A 12 CL2000X G6713 G7930 G7960 G7980 Adhesion Testing and Results Design Considerations Conclusions

For the year, our stock price increased 32%, outpacing the S&P 500 and S&P Mid Cap Index. PolyOne Stock Performance The following is a graph that compares the cumulative total shareholder returns for PolyOne’s common shares, the S&P 500 index and the S&P Mid Cap Chemicals index, with dividends assumed to be reinvested when received. The S&P Mid Cap Chemicals index includes a broad range of chemical manufacturers.

Smartbatch™ Combination Colorants and Additives provided cost effectiveness by combining colorant and UV solutions Cesa™ Light Additives provided high concentrate UV protection in nonwoven textiles with dosage at 50% Smartbatch™ Combination Colorants and Additives provided cost effectiveness by combining colorant and UV additive solutions

Wire and cable applications benefit from coatings that add color, add abrasion resistance, absorb and block water, and enhance UV resistance. Protexcoat™ UV Resistant Coating Enhance ultraviolet (UV) resistance, improve processing

ColorMatrix™ Ultimate™ UV Light Barrier is a UV absorbing additive technology for PET packaging that extends shelf life for UV sensitive food, beverage, personal care and home cleaning products.

UV Resistance LSR is inherently UV resistant and will not degrade when exposed to UV. UV attack by sunlight can be prevented by adding UV stabilizers to polymeric materials.