Process for preparing a poly(oxyorganophosphate/phosphonate) product, products thereof, use of some of these products as flame retardants and materials treated therewith

摘要

Phosphorus containing flame retardants are prepared by a two step process having as essential steps:1. reacting diorgano organophosphonate with reactant comprising phosphorus oxide reagent to yield a metaphosphate/phosphonate reaction product, and thereafter;2. reacting the reaction product of step (1) with reactant comprising epoxide to yield poly(oxyorganophosphate/phosphonate) product.;Selected novel poly(oxyorganophosphate/phosphonate) products contain a backbone structure of repeating units represented by the average formula:wherein m is an integer from 1 to 50; R, R₁, and R₂ are individually selected from saturated hydrocarbon radical, alkaryl radical, aralkyl radical, and aryl radical; and R₃ is:wherein R₄ R₅, R₆, and R, are individually selected from hydrogen atom, hydrocarbon radical, and halogenated hydrocarbon radical.;Articles and compositions such as textiles and polyurethanes are rendered flame retardant by incorporation of poly(oxyorganophosphate/phosphonate) prepared by the process of the invention particularly products of Formula (I).