414 all incorporated herein by reference and in the monograph h schnell chemistry and physics of polycarbonates interscience publishers new york new york 1964 preferably such polycarbonates may be produced by the well known melt polymerization technique taught in the above references such polyurethanes are produced using the novel monomers of the invention by well known methods such as disclosed in u s pat nos 2 266 777 2 284 637 2 284 296 2 511 544 all incorporated herein by reference and in the text polyurethanes chemistry and technology vol 1 j h saunders and k c frisch interscience publishers new york new york 1964 such polyesters are produced using the novel monomers of the invention by well known methods such as disclosed in u s pat nos 2 980 650 3 185 668 3 185 670 and 3 268 482 all incorporated herein by reference and in the text polyesters two parts edited by norman g gaylord interscience publishers new york 1962 such polysulfones are produced using the novel monomers of the invention by well known methods such as disclosed in u s pat nos 3 236 808 3 236 809 3 409 599 and 3 742 087 all incorporated herein by reference such polyethers are produced using the novel monomers.