Magnitude of residual/applied stress in the component While it is intuitive that higher temperatures and higher applied stress can expedite creep behavior and stress cracking, chemical exposure can be more obscure and inconsistent. Processing parameters and part design can influence the residual stresses in a part; higher melt and mold temperatures with longer cooling times can reduce residual stress during molding, whereas coring features, bosses, and round/oval holes (when necessary) can help alleviate internal stresses around part corners. Briefly, ASTM D638 Type I tensile bars were prepared for each material by injection molding using a 2-stage setup procedure, applying a hold pressure of 60% of the injection pressure once a 98% full part was achieved.

Find out how part design can reduce stress in molded plastic parts and improve ESCR in your products Sync design with manufacturability: Learn about how Avient Design can help simplify your new product development process Bring Us Your Sustainability Challenges

More information about Avient and its locations can be found on our website – www.Avient.com A full copy of the Code of Conduct can be found here: https://www.avient.com/company/policies-and-governance-0 In order to improve our internal processes and bring ColorMatrix in line with the overall Avient system a more effective working process for identifying risk will be adopted during the coming year, which will allow us to improve the mitigation and monitoring of risk across our suppliers. 

Microsoft PowerPoint - AVNT Q3 2024 Earnings Presentation_10.29_12PM AVIENT CORPORATION T H I R D Q U A R T E R 2 0 2 4 R E S U L T S A N D 2 0 2 4 F I N A N C I A L G U I D A N C E (NYSE: AVNT) O C T O B E R 3 1 , 2 0 2 4 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. You can identify these statements by the fact that they do not relate strictly to historic or current facts.

NYSE: AVNT) provides specialized and sustainable material solutions that transform customer challenges into opportunities, bringing new products to life for a better world. Light-weighting solutions that replace heavier traditional materials like metal, glass and wood, which can improve fuel efficiency in all modes of transportation and reduce

provides specialized and sustainable material solutions that transform customer challenges into opportunities, bringing new products to life for a better world. Light-weighting solutions that replace heavier traditional materials like metal, glass and wood, which can improve fuel efficiency in all modes of transportation and reduce

NYSE: AVNT) provides specialized and sustainable material solutions that transform customer challenges into opportunities, bringing new products to life for a better world. Light-weighting solutions that replace heavier traditional materials like metal, glass and wood, which can improve fuel efficiency in all modes of transportation and reduce

While these things matter, I want to talk about culture. Sounds hard to believe, I know. Exhibit 31.1 CERTIFICATION I, Robert M.

BENEFITS OF VERSAFLEX PF FOR SURFACE PROTECTIVE FILMS: • Customizable tack • Single-step manufacturing process (co- extrusion) • Low volatile organic compound (VOC) emissions during manufacturing • Eliminates secondary coating and drying operations • Eliminates hazardous liquid chemicals compared to solvent systems • Reduces converting costs versus coating • Reduces energy consumption MARKETS AND APPLICATIONS Versaflex PF formulations, customizable based on desired level of tack, are co-extruded with protective films to provide just the right amount of protection during the fabrication, assembly, shipment, storage and installation of finished goods in many industries and end-use applications including: • Optical films and display panels for consumer electronics • Home appliances • Construction and building materials • Furniture and cabinetry • Automotive and other transportation 100/0 90/10 80/20 70/30 60/40 40/60 30/70 20/80 10/90 0/100 0.9 1.1 2.0 2.4 2.8 3.7 3.8 4.9 0 1 2 3 4 5 6 7 8 6.5 1.6 MD6727 MD6748 MD6700 MD6666 9512 MD6649 MD6741 0 2 4 6 8 10 12 % of MD6741/MD6700 Degree of tack can be customized for substrate surfaces. TAILORING TACK BY BLENDING VERSAFLEX PF Film Thickness: 39 micron LDPE/13 micron Versaflex PF F = Final tack after 7 days @ 25° C i = Initial tack after 20 mins @ 25° C Pe S tr en gt h on S te , N /2 5m m Pe S tr en gt h on S te , N /2 5m m PEEL STRENGTH ON STAINLESS STEEL Film Thickness: 51 micron LDPE/25 micron Versaflex PF www.avient.com Copyright © 2020, Avient Corporation. Processing conditions can cause material properties to shift from the values stated in the information.

Microsoft PowerPoint - AVNT Q3 2021 Earnings Presentation - WEBSITE AVIENT CORPORATION T H I R D Q U A R T E R 2 0 2 1 R E S U LT S (NYSE: AVNT) O C T O B E R 2 8 , 2 0 2 1 DISCLAIMER Forward-Looking Statements In this presentation, statements that are not reported financial results or other historical information are “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. As we grow, we can add capacity with minimal investment. With the Clariant Color business acquisition and divestment of the PP&S business, our exposure is now concentrated in less-cyclical and high-growth markets, with increased geographic diversification and a more specialized portfolio that can significantly expand EBITDA margins. 24 Avient reflects 2021 estimated EBITDA of $580M OUR VALUATION VERSUS PEERS Avient Specialty Other 11.0 18.3 16.3 15.4 14.5 11.6 11.1 36.2 28.0 24.9 13.0 11.5 11.3 10.0 9.2 8.8 7.7 6.7 en t SUMMARY: WHY INVEST IN AVIENT?