DOW RBM-9001 Certificate of Analysis (COA) - labeled as "Material"

BEIGE G7940-9001-02 Certificate of Analysis (COA) - labeled as "Material"

Kunkle: Senior Vice President, General Counsel and Secretary, May 2015 to date. General Manager of Geon Performance Materials, September 2015 to April 2016. POLYONE CORPORATION Exhibit 32.2 CERTIFICATION PURSUANT TO 18 U.S.C.

July 27, 2015 2015 2015

May 7, 2015 What: Goldman Sachs 2015 Basic Materials Conference When: Tuesday, May 19, 2015 – Presentation Time: 1:10 PM

Validity of this certificate may be confirmed at www.abs-qe.com/cert_validation. Validity of this certificate is based on the successful completion of the periodic surveillance audits of the management system defined by the above scope and is contingent upon prompt,written notification to ABS Quality Evaluations, Inc. of significant changes to the management system or components thereof. RC14001®:2015 Certificate No: 55334 Effective Date: 30 October 2017 Expiration Date: 29 October 2020 Issue Date: 30 October 2017 Alex Weisselberg, President DESIGN AND MANUFACTURE OF COLOR CONCENTRATES Certificate Of Conformance has been assessed by ABS Quality Evaluations, Inc. and found to be in conformance with the requirements set forth by:

Last year, we continued to pursue the aggressive 2015 performance targets established in 2012. POLYONE CORPORATION Exhibit 31.1 CERTIFICATION I, Stephen D. POLYONE CORPORATION Exhibit 32.2 CERTIFICATION PURSUANT TO 18 U.S.C.

DYNAFLEX(TM) G7980-9001-02 BLACK Certificate of Analysis (COA) - labeled as "Material"

MC-73411PE RAL #9001 CREAM W/UV Certificate of Analysis (COA) - labeled as "Material"

Dynaflex G7970-9001-02 Certificate of Analysis (COA) - labeled as "Material"