Hi-Bis GmbH is a Germany-based chemical manufacturer specializing in high-purity specialty bisphenols used as comonomers and intermediates in advanced polymers. Established as a joint venture with partners including Honshu Chemical Industry and Mitsui & Co., the company is best known for producing TMC (1,1-bis(4-hydroxyphenyl)-3,3,5-trimethylcyclohexane), a key building block for high-heat polycarbonate grades such as Apec-type materials.
Operating from the Bitterfeld-Wolfen chemical park in Saxony-Anhalt, Hi-Bis supplies polymer producers serving automotive lighting, electrical, and electronics applications where elevated heat resistance and optical clarity are required. The company’s activities focus on the synthesis and purification of specialty bisphenols to stringent quality and regulatory standards, supporting European and global engineering plastics supply chains.