Injection-moldable Therma-Tech™ enables you to design a housing with the required thermal conductivity at a lighter weight than aluminum. THERMA-TECH TT3300-5001EC GREY THERMA-TECH TT6600-5001EC GREY THERMA-TECH TT6600-5008EC ANTHRACITE THERMA-TECH TT9200-5003EC GREY THERMA-TECH TT9200-5003EC MID ANTHRACITE Applications Sensor, Camera & ECU Housings Sensor, Camera & ECU Housings Sensor, Camera & ECU Housings Sensor, Camera & ECU Housings Sensor, Camera & ECU Housings Defining Features Thermally & Electrically Conductive Thermally & Electrically Conductive Thermally & Electrically Conductive Thermally & Electrically Conductive Thermally & Electrically Conductive Filler/ Reinforcement Glass Fiber Glass Fiber Glass Fiber Glass Fiber Glass Fiber Surface Resistivity Reduced total program life cost – The lightweighting and part consolidation benefits of using Therma-Tech material can help you achieve overall system cost reductions.

Gravi-Tech™ Lead Replacement Formulations Stat-Tech™ Static Dissipative & Electrically Conductive Formulations Therma-Tech™ Thermally Conductive Formulations

AUTOMOTIVE OEM V E H I C L E L I G H T H E A T S I N K S • Replace aluminium to reduce part weight and cost • Excellent thermal performance • Simplify manufacturing process • Reduced part weight by 40% and 44% in two heat sink designs while matching the performance of the incumbent material • Met thermal efficiency demands through part re-design and material selection support • Customized multiple formulations to satisfy customer needs • Improved manufacturability by changing to a single injection molding step Therma-Tech™ Thermally Conductive Formulations KEY REQUIREMENTS WHY AVIENT? All Rights Reserved https://www.avient.com/products/engineered-polymer-formulations/conductive-signal-radiation-shielding-formulations/therma-tech-thermally-conductive-formulations

Therma-Tech TT3300-8701 EI FR BK

BATTERY JUNCTION BOX Stat-Tech™ Static Dissipative & Electrically Conductive Formulations Surround™ EMI/RFI Shielding Formulations • Integrated EMI/RFI shielding • Lightweight • Easier to process vs metals MODULE CONNECTOR Therma-Tech™ Thermally Conductive Formulations • Flame resistance • Easy molding • Good stiffness and mechanical strength • Thermal conductivity EV CONNECTOR Edgetek™ PKE Polyketone Formulations • Excellent chemical resistance • Low moisture uptake • Non-halogenated flame retardant performance • Colorable (RAL Orange) • Reduced carbon footprint vs PA6 and PA66 COOLING SYSTEM Therma-Tech™ Thermally Conductive Formulations • Tensile strength • Chemical resistance • Thermal conductivity BATTERY FRAME Maxxam™ FR Flame Retardant Polyolefin Formulations Edgetek™ Engineered Polymer Formulations Polystrand™ Continuous Glass Fiber Reinforced Thermoplastics • Flame resistance • Easy molding • Lightweight • Non-halogenated flame retardant HOUSING TRAY OnForce™ Long Glass Fiber Reinforced Polypropylene Composites Stat-Tech™ Static Dissipative & Electrically Conductive Formulations Polystrand™ Continuous Glass Fiber Reinforced Thermoplastics • Design integration & freedom • Structural performance • EMI shielding BATTERY MANAGEMENT CONTROLLER Stat-Tech™ Static Dissipative & Electrically Conductive Formulations Surround™ EMI/RFI Shielding Formulations • Integrated EMI/RFI shielding • Lightweight • Easier to process vs metals BATTERY HOUSING/COVER OnForce™ Long Glass Fiber Reinforced Polypropylene Composites Complēt™ Long Fiber Reinforced Structural Thermoplastics • Metal replacement • Lightweighting • Flame retardancy • Structural performance • Design integration & freedom Polystrand™ Continuous Glass Fiber Reinforced Thermoplastics • Localized biaxial reinforcement • Impact performance • Overmolding compatibility • Flame retardancy • Integrated assembly point stiffening ENGINEERED MATERIALS FOR EV BATTERIES CELL MODULE Therma-Tech™ Thermally Conductive Formulations • Flame resistance • Easy molding • Good stiffness and mechanical strength • Thermal conductivity UNDERBODY PROTECTION Polystrand™ Continuous Glass Fiber Reinforced Thermoplastics • Superior impact performance • Significantly lighter than steel • Simplified integration with housing • Corrosion resistance • Flame retardancy

© 2019, All Right Reserved PolyOne Corporation, 33587 Walker Road, Avon Lake, Ohio USA 44012 AUTOMOTIVE PARTS MANUFACTURER P L A T E H E A T E X C H A N G E R • High thermal conductivity • Very good flow rate for thin walls • Chemical resistance to glycol • Good aging for both chemical & temperature resistance • Improved thermal performance by eliminating the effects of corrosion • Reduced overall part weight • Provided greater design freedom meaning a more complex part could be designed and molded • Enabled several heat exchangers to be consolidated into one, saving space in the vehicle and increasing efficiency Therma-Tech™ Thermally Conductive Formulation KEY REQUIREMENTS WHY AVIENT? All Rights Reserved. https://www.polyone.com/products/engineered-polymer-formulations/conductive-signal-radiation-shielding-formulations/therma Automotive parts manufacturer

ELAUSA ELECTRONICS V E H I C L E L I G H T H E A T S I N K • Replace aluminium to reduce part cost and weight • Maintain similar thermal transition to current material • Simplify manufacturing • Reduced part weight from 38g to 9g • Provided the required thermal efficiency through part re-design and material choice • Enabled upfront simulation data through Avient Design reducing risk of metal replacement • Simplified manufacture process to a single injection molding step Therma-Tech™ Thermally Conductive Formulations KEY REQUIREMENTS WHY AVIENT? All Rights Reserved https://www.avient.com/products/engineered-polymer-formulations/conductive-signal-radiation-shielding-formulations/therma-tech-thermally-conductive-formulations

 A reconciliation of each non-GAAP financial measure with the most directly comparable GAAP financial measure is attached to this presentation which is posted on our website at www.polyone.com. 4 POLYONE CORPORATION About PolyOne Reach 7,000 associates | 77 facilities | $3.4 B 2015 revenue Global Presence 10,000 global customers | Americas, Europe, Africa, Asia | Global sales, technical and manufacturing footprint Solutions 35,000+ polymer solutions | 12 innovation centers | Support for design through manufacturing 5 POLYONE CORPORATION What We Do Value Formulation Expertise Inputs Base resins Additives Modifiers Pigments Expertise in Polymer Materials, Services and Solutions OEMs Brand Owners Processers Assemblers Driving customer value with specialty products & services Service InVisiOSM Color Services IQ Design Labs LSS Customer First POLYONE CORPORATION 6 CAI 23% SEM 15% DSS 13% POD 29% PPS 20% 2015 Revenue: $3.4 Billion At a Glance United States 66% Europe 13% Canada 7% Asia 7% Latin America 7% $0.12 $0.27 $0.21 $0.13 $0.68 $0.82 $1.00 $1.31 $1.80 $1.96 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2015 Revenue: $3.4 Billion 2015 Operating Income: $322 Million CAI 38% SEM 23% DSS 4% POD 19% PPS 16% Adjusted Earnings Per Share 7 POLYONE CORPORATION Old PolyOne *Operating Income excludes corporate charges and special items 2% 43% 65% 0% 20% 40% 60% 80% 100% 2005 2010 2015 2020 % o f O pe ra tin g In co m e* JV's Performance Products & Solutions Distribution Specialty 80%+ Specialty OI $5M $87M $229M Transformation 2020 Platinum Vision Platinum Vision Mix Shift Highlights Specialty Transformation POLYONE CORPORATION 8 -$0.10 $0.00 $0.10 $0.20 $0.30 $0.40 $0.50 $0.60 $0.70 2009 2010 2011 2012 2013 2014 2015 2016 Adjusted Earnings Per Share $0.56 3Q -2% 0% 2% 4% 6% 8% 10% 12% 2009 2010 2011 2012 2013 2014 2015 2016 Adjusted Consolidated Operating Margin 2.8% 5.2% 5.6% 6.7% 8.3% 6.9% 9.5% 9.9% 3Q 28 Consecutive Quarters of EPS Growth 9 POLYONE CORPORATION 2006 2016 YTD 2020 “Where we were” “Where we are” Platinum Vision 1) Operating Income % of Sales Specialty: Color, Additives & Inks 1.7% 17.0% 20%+ Specialty Engineered Materials 1.1% 15.2% 20%+ Designed Structures & Solutions N/A 0.6% (TTM) 8 – 10% Performance Products & Solutions 5.5% 11.6% 12 – 14% Distribution 2.6% 6.6% 6.5 – 7.5% 2) Specialty Platform % of Operating Income 6.0% 60% 80%+ 3) ROIC* 5.0% 11.6% 15% 4) Adjusted EPS Growth N/A 11.5% Double Digit Expansion Proof of Performance & 2020 Goals *ROIC is defined as TTM adjusted OI divided by the sum of average debt and equity over a 5 quarter period POLYONE CORPORATION 10 2,883 2,414 2006 2015 Volume (lbs in millions) -16% $103 $192 2006 2015 Commercial, R&D and Marketing Spending ($M) +86% $88 $322 2006 2015 Adjusted Operating Profit ($M) +266% Ours is Not a Cost Cutting Story 11 POLYONE CORPORATION Innovation Drives Earnings Growth *Specialty Platform revenue from products introduced in last five years $20 $53 2006 2015 Research & Development Spending ($ millions) Specialty Platform Vitality Index Progression* 14% 34% 2006 2015 CAI & SEM Gross Margin 12% 43% 2006 2015 Target ≥ 35% Innovation Pipeline Potential 12 POLYONE CORPORATION Globalization Specialization Commercial Excellence Operational Excellence Growth in urbanization Changing demographics Climate and resource challenges Increase of individual power Evolution and expansion of healthcare Strategic Growth Opportunities Four Pillar Strategy Global Megatrends Attractive Revenue & Margin Growth Opportunities 13 POLYONE CORPORATION Primary Industries Served 2015 Revenue: $3.4 Billion Electrical & Electronic 5% Building & Construction 12% Appliance 4% Industrial 14% Wire & Cable 9% Healthcare 11% Consumer 10% Packaging 13% Transportation 20% Focus End Markets 14 POLYONE CORPORATION Therma-Tech™ & Sheet GEON™ Vinyl Polymer Colorants Therma-Tech™ TPE’s & Film TPE + OnForce™ Gravi-Tech™ Page 14 Film Target End Markets… Healthcare 15 POLYONE CORPORATION Sound & Vibration Management Fuel Handling Systems Interior & Exterior Trim Structural Braces & Brackets Interior Structural Components Lighting Air management Electronics & Cameras Fluid Handling Target End Markets… Automotive Underhood Components Roof Systems 16 POLYONE CORPORATION PreservaPak™ OnColor™ Smart Batch™ VersaFlex™ TPE Cap Liner ColorMatrix™ Amosorb™ Oxygen Scavenger ColorMatrix™ Ultimate™ UV Light Barrier OnCap™ Laser Marking Additives Target End Markets… Packaging 17 POLYONE CORPORATION Source: Outdoor Industry Association TPE Vibration Dampening (SEM/GLS) TPE + OnForce (SEM) OnForce (SEM) Advanced Composites (SEM) TPE Vibration Dampening (SEM/GLS) Target End Markets… Outdoor High Performance Thermoplastic Elastomers (SEM) Advanced Composites (SEM) Polymer Colorants (CAI) Sheet (DSS) TPE & Film (SEM + DSS) Advanced Composites (SEM) Polymer Colorants (CAI) Thermatech (SEM) Thermoplastic Elastomers (SEM) TPE + OnForce (SEM) OnForce (SEM) 18 POLYONE CORPORATION Free Cash Flow and Strong Balance Sheet Fund Investment / Shareholder Return  Expanding our sales, marketing, and technical capabilities  Investing in operational and LSS initiatives  ~75% of capital expenditures fund growth initiatives Organic Growth Acquisitions Share Repurchases Dividends  Targets that expand our: • Specialty offerings • End market presence • Geographic breadth  Synergy opportunities  Adjacent material solutions  Repurchased 318,000 shares in Q3 2016  Repurchased 17.6 million shares since early 2013  9.7 million shares are available for repurchase under the current authorization  Increased annual dividend by 12.5% to $0.54 per share, representing the sixth consecutive year of dividend growth 19 POLYONE CORPORATION Returning Cash to Shareholders $0.16 $0.20 $0.24 $0.32 $0.40 $0.48 $0.54 $0.10 $0.20 $0.30 $0.40 $0.50 $0.60 2011 2012 2013 2014 2015 2016 2017 Annual Dividend  Since 2011, we have returned nearly $800 million to shareholders  $130 million returned through dividends  $650 million returned through share repurchases $650M $0 $150 $300 $450 $600 $750 2011 2012 2013 2014 2015 Q3'16 Cumulative Share Repurchases (in millions) POLYONE CORPORATION 20 The New PolyOne: A Specialty Growth Company Why Invest In PolyOne?

 A reconciliation of each non-GAAP financial measure with the most directly comparable GAAP financial measure is attached to this presentation which is posted on our website at www.polyone.com. 4 POLYONE CORPORATION About PolyOne Reach 7,000 associates | 77 facilities | $3.4 B 2015 revenue Global Presence 10,000 global customers | Americas, Europe, Africa, Asia | Global sales, technical and manufacturing footprint Solutions 35,000+ polymer solutions | 12 innovation centers | Support for design through manufacturing 5 POLYONE CORPORATION What We Do Value Formulation Expertise Inputs Base resins Additives Modifiers Pigments Expertise in Polymer Materials, Services and Solutions OEMs Brand Owners Processers Assemblers Driving customer value with specialty products & services Service InVisiOSM Color Services IQ Design Labs LSS Customer First POLYONE CORPORATION 6 CAI 23% SEM 15% DSS 13% POD 29% PPS 20% 2015 Revenue: $3.4 Billion At a Glance United States 66% Europe 13% Canada 7% Asia 7% Latin America 7% $0.12 $0.27 $0.21 $0.13 $0.68 $0.82 $1.00 $1.31 $1.80 $1.96 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2015 Revenue: $3.4 Billion 2015 Operating Income: $322 Million CAI 38% SEM 23% DSS 4% POD 19% PPS 16% Adjusted Earnings Per Share 7 POLYONE CORPORATION Old PolyOne *Operating Income excludes corporate charges and special items 2% 43% 65% 0% 20% 40% 60% 80% 100% 2005 2010 2015 2020 % o f O pe ra tin g In co m e* JV's Performance Products & Solutions Distribution Specialty 80%+ Specialty OI $5M $87M $229M Transformation 2020 Platinum Vision Platinum Vision Mix Shift Highlights Specialty Transformation POLYONE CORPORATION 8 -$0.10 $0.00 $0.10 $0.20 $0.30 $0.40 $0.50 $0.60 $0.70 2009 2010 2011 2012 2013 2014 2015 2016 Adjusted Earnings Per Share $0.56 3Q -2% 0% 2% 4% 6% 8% 10% 12% 2009 2010 2011 2012 2013 2014 2015 2016 Adjusted Consolidated Operating Margin 2.8% 5.2% 5.6% 6.7% 8.3% 6.9% 9.5% 9.9% 3Q 28 Consecutive Quarters of EPS Growth 9 POLYONE CORPORATION 2006 2016 YTD 2020 “Where we were” “Where we are” Platinum Vision 1) Operating Income % of Sales Specialty: Color, Additives & Inks 1.7% 17.0% 20%+ Specialty Engineered Materials 1.1% 15.2% 20%+ Designed Structures & Solutions N/A 0.6% (TTM) 8 – 10% Performance Products & Solutions 5.5% 11.6% 12 – 14% Distribution 2.6% 6.6% 6.5 – 7.5% 2) Specialty Platform % of Operating Income 6.0% 60% 80%+ 3) ROIC* 5.0% 11.6% 15% 4) Adjusted EPS Growth N/A 11.5% Double Digit Expansion Proof of Performance & 2020 Goals *ROIC is defined as TTM adjusted OI divided by the sum of average debt and equity over a 5 quarter period POLYONE CORPORATION 10 2,883 2,414 2006 2015 Volume (lbs in millions) -16% $103 $192 2006 2015 Commercial, R&D and Marketing Spending ($M) +86% $88 $322 2006 2015 Adjusted Operating Profit ($M) +266% Ours is Not a Cost Cutting Story 11 POLYONE CORPORATION Innovation Drives Earnings Growth *Specialty Platform revenue from products introduced in last five years $20 $53 2006 2015 Research & Development Spending ($ millions) Specialty Platform Vitality Index Progression* 14% 34% 2006 2015 CAI & SEM Gross Margin 12% 43% 2006 2015 Target ≥ 35% Innovation Pipeline Potential 12 POLYONE CORPORATION Globalization Specialization Commercial Excellence Operational Excellence Growth in urbanization Changing demographics Climate and resource challenges Increase of individual power Evolution and expansion of healthcare Strategic Growth Opportunities Four Pillar Strategy Global Megatrends Attractive Revenue & Margin Growth Opportunities 13 POLYONE CORPORATION Primary Industries Served 2015 Revenue: $3.4 Billion Electrical & Electronic 5% Building & Construction 12% Appliance 4% Industrial 14% Wire & Cable 9% Healthcare 11% Consumer 10% Packaging 13% Transportation 20% Focus End Markets 14 POLYONE CORPORATION Therma-Tech™ & Sheet GEON™ Vinyl Polymer Colorants Therma-Tech™ TPE’s & Film TPE + OnForce™ Gravi-Tech™ Page 14 Film Target End Markets… Healthcare 15 POLYONE CORPORATION Sound & Vibration Management Fuel Handling Systems Interior & Exterior Trim Structural Braces & Brackets Interior Structural Components Lighting Air management Electronics & Cameras Fluid Handling Target End Markets… Automotive Underhood Components Roof Systems 16 POLYONE CORPORATION PreservaPak™ OnColor™ Smart Batch™ VersaFlex™ TPE Cap Liner ColorMatrix™ Amosorb™ Oxygen Scavenger ColorMatrix™ Ultimate™ UV Light Barrier OnCap™ Laser Marking Additives Target End Markets… Packaging 17 POLYONE CORPORATION Source: Outdoor Industry Association TPE Vibration Dampening (SEM/GLS) TPE + OnForce (SEM) OnForce (SEM) Advanced Composites (SEM) TPE Vibration Dampening (SEM/GLS) Target End Markets… Outdoor High Performance Thermoplastic Elastomers (SEM) Advanced Composites (SEM) Polymer Colorants (CAI) Sheet (DSS) TPE & Film (SEM + DSS) Advanced Composites (SEM) Polymer Colorants (CAI) Thermatech (SEM) Thermoplastic Elastomers (SEM) TPE + OnForce (SEM) OnForce (SEM) 18 POLYONE CORPORATION Free Cash Flow and Strong Balance Sheet Fund Investment / Shareholder Return  Expanding our sales, marketing, and technical capabilities  Investing in operational and LSS initiatives  ~75% of capital expenditures fund growth initiatives Organic Growth Acquisitions Share Repurchases Dividends  Targets that expand our: • Specialty offerings • End market presence • Geographic breadth  Synergy opportunities  Adjacent material solutions  Repurchased 318,000 shares in Q3 2016  Repurchased 17.6 million shares since early 2013  9.7 million shares are available for repurchase under the current authorization  Increased annual dividend by 12.5% to $0.54 per share, representing the sixth consecutive year of dividend growth 19 POLYONE CORPORATION Returning Cash to Shareholders $0.16 $0.20 $0.24 $0.32 $0.40 $0.48 $0.54 $0.10 $0.20 $0.30 $0.40 $0.50 $0.60 2011 2012 2013 2014 2015 2016 2017 Annual Dividend  Since 2011, we have returned nearly $800 million to shareholders  $130 million returned through dividends  $650 million returned through share repurchases $650M $0 $150 $300 $450 $600 $750 2011 2012 2013 2014 2015 Q3'16 Cumulative Share Repurchases (in millions) POLYONE CORPORATION 20 The New PolyOne: A Specialty Growth Company Why Invest In PolyOne?

Therma-Tech™ Thermally Conductive Formulations