This year Eastman Crystex celebrates its 75th year. The Crystex story began in 1944 when Stauffer Chemical Company filed a patent for its insoluble sulphur product. The name Crystex evolved from “No Crystals” and “Crystals-X” as a literal explanation of the product function and benefit to tyre makers. The brand grew, and high thermal stability grades were introduced. In a short time, Crystex became known for providing robust properties that tyremakers needed as they innovated and operated in more challenging production environments.