¹https://www.nbcnews.com/news/us-news/three-substations-attacked-washington-state-rcna63214  ² https://www.ferc.gov/sites/default/files/2020-04/E-4_10.pdf 

November 12, 2020 CLEVELAND – November 12, 2020 – Avient Corporation, a premier provider of specialized and sustainable material solutions and services, has officially opened its new CycleWorks facility in Pogliano, Italy. For more insights on CycleWorks and opportunities to collaborate, as well as Avient’s broader sustainability initiatives, register here for the upcoming Plastic Recyclers Europe online conference next month: https://www.prseventeurope.com/prse2020/en/page/conference-programme

The webcast can be viewed live at avient.com/investors, or by clicking here: https://edge.media-server.com/mmc/p/eaivs28r.   NYSE: AVNT), with 2020 pro forma revenues of

November 3, 2020 2020 2020

Figure 1 Surface energy of various thermoplastic elastomers with rigid thermoplastics Engineering Plastics Polyamide 6,6 ABS Polycarbonate Acrylic Polystyrene Polypropylene Polyethylene Elastomers COPA TPU COPE S-TPE TPV mPE Surface Energy (mN/m) 46 43 40 37 34 31 28 Figure 2 Schematic diagram of the peel test Table I Physical property of TPE-1 Shore A Hardness (10 second delay) 44 Specific Gravity (g/cm3) 0.90 Color Natural 300 % Modulus (PSI) 348 Tensile Strength (PSI) 603 Elongation at Break (%) 598 Tear Strength (lbf/in) 110 Table II Adhesion value of TPE-1 on different substrates Substrate Average Peel Strength (lbf) Failure Type PP 17 Cohesive Copolyester 13 Adhesive PET 13 Adhesive PPE/HIPS 18 Adhesive PMMA 15 Adhesive PS 18 Adhesive PC 17 Adhesive PC/ABS 14 Adhesive HIPS 13 Adhesive ABS 13 Adhesive Table III Properties and peel strength of TPE-2 materials 15.37Nylon 11.16.5POM 227Polyester 22.619PC/ABS 24.5-ABS 20.828PP Peel Strength (PIL) 713721Tensile Elongation (%): 10811010Tensile Strength (psi): 5651Hardness: BA 15.37Nylon 11.16.5POM 227Polyester 22.619PC/ABS 24.5-ABS 20.828PP Peel Strength (PIL) 713721Tensile Elongation (%): 10811010Tensile Strength (psi): 5651Hardness: BA Figure 3 Capillary viscosity of TPE-1 and -2 at 200°C 1.00E+00 1.00E+01 1.00E+02 1.00E+03 1.00E+01 1.00E+02 1.00E+03 1.00E+04 1.00E+05 Shear rate (1/sec) Vi sc os ity (P a* se c) TPE-1 TPE-2A TPE-2B GLS Corporation Abstract Introduction Experimental Material Two classes of “universal overmolding TPEs” have been developed and used in this study.

December 14, 2020 Dec. 14, 2020 NYSE: AVNT), with projected 2020 pro forma revenues of approximately

Microsoft Word - Avient_SecurityPolicy_2020 SECURITY POLICY Avient Corporation places a high priority on protecting the security of our people, our buildings and equipment, and our proprietary information, technology and systems. Bob Patterson Chairman, President, and CEO August 1, 2020

2LKAB Minerals, MicaFort http://lkabminerals.com/Products/MicaFort  1https://www.avient.com/sites/default/files/2020-09/stat-tech-tri-fold-processing-guide.pdf 2https://www.avient.com/sites/default/files/2020-12/therma-tech-processing-guide.pdf 1Gravi-Tech Processing Guide https://www.avient.com/sites/default/files/2020-10/2020-gravi-tech-processing-guide.pdf

The webcast can be viewed at avient.com/investors, or by clicking here: https://edge.media-server.com/mmc/p/ko4y5g9z. 2020 2020

October 12, 2020 Oct. 12, 2020 ET, November 3, 2020