C - Chemistry – Metallurgy – 07 – F
Patent
C - Chemistry, Metallurgy
07
F
402/127, 260/458
C07F 9/09 (2006.01) C07F 9/40 (2006.01) C08G 79/04 (2006.01) C08K 5/5333 (2006.01)
Patent
CA 1140567
ABSTRACT OF THE DISCLOSURE 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 poly(oxyorganophosphate/phosphonate) products contain a backbone structure of repeating units represented by the average formula Image (I) 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: Image wherein R4, R5, R6, and R7 are individually selected from hydrogen atom, hydrocarbon radical, and halo- genated hydrocarbon radical. Articles and compositions such as textiles and polyurethanes are rendered flame retardant by incorporation of poly(oxyorganophosphate/phosphonate) products of Formula (I).
323575
Gowling Lafleur Henderson Llp
Stauffer Chemical Company
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