Nozzle Drool Nozzle temperature too hot • Decrease nozzle temperature • Decrease back pressure • Increase screw decompression • Verify material has been dried at proper conditions Incorrect nozzle • Use reverse taper tip Weld Lines Melt front temperatures are too low • Increase pack and hold pressure Mold design • Increase gate size • Perform short shots to determine fill pattern and verify proper vent location • Add vents and/or false ejector pin • Move gate location Warp Process related • Increase pack pressure • Increase pack time Mold design • Non-uniform mold cooling Part design • Non-uniform wall thickness Thermolator incorrect temperature • Check settings • Inspect thermocouple Processing Guide 7 Sticking in Mold Overfilled cavity • Decrease injection rate and pressure • Decrease pack and hold pressure • Adjust transfer position • Decrease cooling time Mold design • Increase draft angle • Polish cores in direction of ejection Part is too hot 1.844.4AVIENT www.avient.com Copyright © 2024, Avient Corporation.

Design Guide 37 Hot spots Improper cooling Venting plugged Barrel too hot Too hot Melt temperature Reduced transfer Check venting Add a flow leader Insure cushion position Insure proper screw recov- ery Add a foaming agent Increase hold pressure Reduce melt Reduce mold Increase mold Sink Root cause: Material is shrinking away from mold surface. 38 Gravi-Tech Condensation Wrong screw configuration Injection speed too fast Residence time too long Excessive Check mold surface for condensation Check for condensation in feed throat Check dry material dew point Increase mold Reduce melt Reduce screw speed Reduce decompression Splay • Silver streaks on part Root cause: Material degradation Design Guide 39 Venting impaired Leaking check ring Heating band burned out Melt temperature Transfer position too high Clean mold surface Check vents Increase melt Increase mold Increase back pressure Decrease transfer Surface Finish Root cause: Material is not reproducing the mold surface finish. 40 Gravi-Tech Tooling damage Heater band overriding Leaking check ring Melt temperature Pack pressure too high Hold time too low Reduce gate size Increase cooling in gate area Check gate for blockage Check thermocouples for continuity Ensure cushion is maintained Dry material Reduce melt Reduce tip temperature Gate Vestige Root cause: Material doesn’t have a clean break at gate. NON-RETURN VALVES Check Ring The check ring insures that material cannot flow back over the screw tip upon injection. IMPORTANT ADVICE Screw Tip Breakage The primary cause is not enough “soak” time.

These aren’t small challenges, but the right materials can help tip the scales in your favor.

Pinch grip - The tip-pinch or two-point grip is used for picking up objects, such as a coin or credit card.

Non-PFAS additives EXISTING EVOLVING pipette tips Non-PFAS polymer processing aids flame retardants Meeting tough flame retardancy regulations medical tubing solvent barrier Oil and solvent resistant Copyright © . 2024 37 Margin expansion opportunity CAI margin expansion +350bps margin expansion • Organic volume growth and SG&A efficiencies from prioritizing resources • Increased sales in higher margin growth platforms such as functional additives Productivity • Plant network optimization • Manufacturing efficiencies • Sourcing programs 38Copyright © .

S&P 500 -100% 200% 300% 400% 500% 600% POL S&P 500 PolyOne Corporation Page 85 Formula for Success Innovation Market Beating Performance Excellence in Execution PolyOne Corporation Page 86 Track Record of Successful Acquisitions $12 $50 2007 2014 $22 $39 2012 2014 $24 $69 2012 2014 GLS ColorMatrix Spartech OI in $ millions PolyOne Corporation Page 87 Driving Toward Premier Profitability EBIT Margins for top tier companies Victrex 41% 18% Albemarle Eastman 17% Hexcel 17% FMC 16% Ecolab 14% 12% Specialty EBIT Margin – 2014 IFF 19% Celanese 13% PolyOne Corporation Page 88 2006 2014 2020 “Where we were” “Where we are” Platinum Vision Operating Income % Specialty: Global Color, Additives & Inks 1.7% 14.7% 20%+ Global Specialty Engineered Materials 1.1% 12.1% 20%+ Designed Structures & Solutions 1.4%(2012) 7.3% 12 – 14% Performance Products & Solutions 5.5% 7.7% 10 – 12% Distribution 2.6% 6.1% 6.5 – 7.5% Specialty Platform % of Operating Income 6.0% 65% 80%+ ROIC 5.0% 11.3% 15% Adjusted EPS Growth N/A 37% Double Digit Expansion 2020 Platinum Vision PolyOne Corporation Page 89 Platinum Vision: Pathway to Accelerated Growth Organic Sales Growth Margin Expansion Share Repurchases Acquisitions PolyOne Corporation Page 90 2006 2010 2014 2020 Driving Toward a Premium Specialty Multiple 6x 4x Commodity POL 8x Hybrid 10x 14x+ Mid-Tier Specialty Premium Specialty M ul tip le POL POL POL PolyOne Corporation Page 91 The New PolyOne: A Specialty Growth Company Why Invest In PolyOne?