Polyarylene esters containing phosphorus

摘要

What are disclosed are resinous polyarylene esters containing more than 1 percent by weight of phosphorus and having the formula-CO-A-CO-O-B-On, wherein B is a bivalent aromatic group and A represents at least in part -phenylene-P(O)x(R)-phenylene-, wherein R is lower alkyl or aryl and x is 0 or 1, the rest, if any, of A having the formula given for B, which esters have decomposition temperatures of at least 450 DEG C. and can be sintered or thermoplastically processed into sheets or other shapes having good self-extinguishing properties.