Synthesis of l,l-Dichloro-2,2-bis4-(4'- Hydroxyphenyl)phenylethene and Its Incorporation into Homo- and Heteropolycarbonates

摘要

Polycarbonates from l,l-dichloro-2,2-bis-(4-hydroxyphenyl)-ethylene (BPC) constitute a highly flame-resistant family of engineering thermoplastics. The preparation of polycarbonates from BPC was first reported in 1964 as a copolymer with bisphenol A (BPA). A new monomer analogue of BPC has been synthesized which has a higher aspect ratio than BPC. This monomer has been polymerized to polycarbonates with the goal of improved ductility and heat-resistance. An efficient synthesis of the monomer l,l-dichloro-2,2-bis[4'-(4-hydroxyphenyl)phenyl]ethane (TABPC) is reported, as are the molecular weights and glass transition temperatures of homo-and heteropolycarbonates of TABPC.