Also Called: Phosphonic acid, P-methyl-, diphenyl ester, polymer with 4,4'-(1-methylethylidene)bis[phenol];Polyphosphonate homopolymer / oligomers;Diphenyl P-methylphosphonate polymer with 4,4'-(1-methylethylidene)bis[phenol];Polymer of diphenyl methylphosphonate / 4,4'-(isopropylidene)diphenol