https://www.avient.com/news/polyone-accentuates-what’s-possible-application-specific-materials-and-design-npe-2018
COMPTEK™ High Temperature Formulations: Eighteen months ago, PolyOne acquired COMPTEK (Diez, Germany), a specialist in formulations based on extreme-heat polymeric materials such as PEEK, PES, PEI, PPS, PSU and PPSU.
https://www.avient.com/knowledge-base/article/exploring-world-fluoropolymers
2 Sina Ebnesajjad, “Introduction to Fluoropolymers,” Applied Plastics Engineering Handbook (Elsevier, 2011) pp 49-60.