Georges Sturtz

The fire-resistance properties of polycarbonates: I. New fire-resistant polycarbonates containing phosphoric acid diester groups

SummaryThe present paper describes two types of polycarbonates possessing fire-resistance. The first type is obtained by reacting dialkyl bis(hydroxy-4-phenyl) alkyl phosphonates with phosgene and the second type is a copolymer of bisphenol A and dialkyl bisphenol phosphonates.We show that the incorporation of dialkyl bisphenol phosphonates into the bisphenol A polycarbonate chains can be satisfactorily carried out using interfacial polycondensation.The products with groups-P (OCH3)2 possess high oxygen indices (OI).