Exhibit 31.1 CERTIFICATION I, Robert M. Patterson Exhibit 31.2 CERTIFICATION I, Jamie A. Exhibit 32.2 CERTIFICATION PURSUANT TO 18 U.S.C.

October 8, 2015 CLEVELAND – Oct. 8, 2015 – The Board of Directors of PolyOne Corporation (NYSE: POL) has declared a quarterly cash dividend of twelve cents ($0.12) per share on the common stock outstanding, representing a 20% increase to the quarterly cash dividend and the fifth consecutive year of annual dividend growth. The $0.12 per share will be paid on January 7, 2016 to stockholders of record on December 18, 2015.

January 8, 2015 CLEVELAND – PolyOne Corporation (NYSE: POL), a premier provider of specialized polymer materials, services and solutions, will host an Investor Day for investment professionals on Monday, May 18, 2015, from 12:00 p.m. to 5:00 p.m., at the InterContinental New York Times Square hotel. While we remain laser focused and in aggressive pursuit of our 2015 performance targets, we’re also planning for a future driven by specialty innovation, collaboration and growth, leading to strong double digit adjusted EPS expansion for many years to come.

Distributors have until December 1, 2015 to implement the same changes. The modified WHMIS regulation is now referred to as WHMIS 2015; which adopts GHS. The European Union has already required several changes to SDSs under both the chemical registration framework of REACH, and the Classification Labeling and Packaging (CLP) which result in similar format changes to those required under GHS.

Chief Financial Officer, Material Solutions at Celanese Corporation from 2011 to 2015. Training and Organizational Development Senior Manager from March 2015 to December 2015. Training and Organizational Development Manager from July 2013 to February 2015.

Additionally, they meet strict regulatory requirements, passing Registration, Evaluation, Authorization, and Restriction of Chemicals (REACH) and Restriction of Hazardous Substances (RoHS) standards and certification by TÜV Rheinland.

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March 17, 2015 At NPE 2015 next week, samples of building products made with Geon Bold will be on display at PolyOne’s Customer Innovation Center (Room S230 BC). In addition, PolyOne will also be presenting “Important Considerations for Weatherable Building Products in Dark Colors” at PROFILES 2015, on June 9-10, 2015.

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