Abstract: Certain phosphonic acid salts heated at temperatures over 200° C. generate thermally stable, highly efficient flame retardant materials well suited for use as flame retardant additives in polymers. Various methods for preparing flame retardant materials from more than one phosphonic acid salts are provided, wherein each method can generate different flame retardant materials from the same mixture of starting phosphonic acids. The flame retardants of the invention can be used as the sole flame retardant in a composition or in combination with other flame retardants, synergists or adjuvants.

Abstract: Certain phosphonic acid salts heated at temperatures over 200° C. generate thermally stable, highly efficient flame retardant materials well suited for use as flame retardant additives in polymers. The flame retardants of the invention can be used as the sole flame retardant in a composition or in combination with other flame retardants, synergists or adjuvants.

Abstract: Certain phosphonic acid salts heated at temperatures over 200° C. generate thermally stable, highly efficient flame retardant materials well suited for use as flame retardant additives in polymers. Various methods for preparing flame retardant materials from more than one phosphonic acid salts are provided, wherein each method can generate different flame retardant materials from the same mixture of starting phosphonic acids. The flame retardants of the invention can be used as the sole flame retardant in a composition or in combination with other flame retardants, synergists or adjuvants.

Abstract: Certain phosphonic acid salts heated at temperatures over 200° C. generate thermally stable, highly efficient flame retardant materials well suited for use as flame retardant additives in polymers. The flame retardants of the invention can be used as the sole flame retardant in a composition or in combination with other flame retardants, synergists or adjuvants.

Abstract: Antimony free flame retardant compositions are prepared by combining a polymer resin, certain halogenated polyphenylene ether flame retardants and a non-brominated phenoxy oligomer or polymer such as a poly-phenylene ether, aryloxyester, or aryloxycarbonate. The present antimony free flame retardant compositions also typically have more desirable physical properties than similar compositions comprising antimony trioxide and other flame retardant. In particular embodiments, ATO free flame retardant HIPS and PC/ABS compositions are provided.

Abstract: Antimony free flame retardant compositions are prepared by combining a polymer resin, certain halogenated polyphenylene ether flame retardants and a non-brominated phenoxy oligomer or polymer such as a poly-phenylene ether, aryloxyester, or aryloxycarbonate. The present antimony free flame retardant compositions also typically have more desirable physical properties than similar compositions comprising antimony trioxide and other flame retardant. In particular embodiments, ATO free flame retardant HIPS and PC/ABS compositions are provided.

Abstract: A halogenated non-polymeric phenyl ether flame retardant is described having the general formula (I): wherein each X is independently Cl or Br, n is an integer of 1 or 2, and each p is independently an integer of 1 to 4, provided that, when each X is Cl, the total amount halogen in the ether is from about 50 to about 65 wt % and when each X is Br, the total amount halogen in the ether is from at least 70 wt % to about 79 wt % and wherein from about 30% to about 80%, for example from about 35% to about 75% of the halogenated ethers are fully halogenated the remainder being partially halogenated. The present flame retardant provides superior mechanical properties when incorporated into a polymer than similar flame retardants which contain a higher amount of fully halogenated species.

Abstract: A halogenated non-polymeric phenyl ether flame retardant is described having the general formula (I): wherein each X is independently Cl or Br, n is an integer of 1 or 2, and each p is independently an integer of 1 to 4, provided that, when each X is Cl, the total amount halogen in the ether is from about 50 to about 65 wt % and when each X is Br, the total amount halogen in the ether is from at least 70 wt % to about 79 wt % and wherein from about 30% to about 80%, for example from about 35% to about 75% of the halogenated ethers are fully halogenated the remainder being partially halogenated. The present flame retardant provides superior mechanical properties when incorporated into a polymer than similar flame retardants which contain a higher amount of fully halogenated species.

Abstract: A flame retardant composition comprises (a) an organic halide flame retardant in the form of a powder having an average particle size less than or equal 15 microns and (b) an inorganic oxide in an amount up to 5% of the total weight of the organic halide and the inorganic oxide.