Abstract: The problem of lack of uniform dispersion of a fluoropolymer as a flame retardant additive to thermoplastic resins is solved by a dispersion of a fluoropolymer in a flame retardant which is then blended as particles with a thermoplastic resin in molten form. Furthermore, flame retardant precursors are reacted in the presence of a fluoropolymer to form a molten flame retardant mixed with the fluoropolymer in another aspect.

Abstract: This invention provides a flame retardant for polymeric compositions which is a mixture consisting of high molecular weight brominated epoxides modified with tribromophenol, having a low content of organic solvents. The invention further relates to a method for the preparation of the retardant, and to its use in flame retarded engineering thermoplastics having good chemical, thermal, and mechanical properties.

Abstract: A polypropylene composition comprising polypropylene impact copolymer or impact modified polypropylene and an effective flame retarding amount of a mixture of (i) tris(tribromoneopentyl) phosphate and (ii) a carbon-carbon initiator, wherein the composition meets a UL 94 rating of V-1 or V-0, said composition being substantially free from antimony trioxide. A method for improving the flame retarding rating of a polypropylene composition is also disclosed.

Abstract: A flame-retarded styrene-containing polymer composition, which comprises a styrene-containing polymer, tris(2,4,6-tribromophenoxy)-s-triazine, 0.5-1.7 wt % antimony trioxide, and an anti-dripping agent. The bromine content of the composition is generally in the range between 8 and 18 wt %. Additional brominated flame retarding agents may also be included in the composition.

Abstract: A fire-retardant formulation for styrene-containing polymers comprising tris(2,4,6-tribromophenoxy)-s-triazine (FR-245), antimony trioxide and polytetrafluoroethylene (PTFE), wherein the bromine concentration in said fire-retardant formulation is from about 9.0 to about 10.5 wt. %, said antimony trioxide concentration being lower than about 3.2 wt. %.

Abstract: A liquid flame retardant composition having one or more flame retarding agents, which are the epoxides obtainable by reacting tetrabromobisphenol A with epichlorohydrin and their end-capped derivatives represented by Formula (1), is provided. The liquid composition is especially useful in the preparation of rigid polyurethane foams.

Abstract: A fire-retardant formulation for styrene-containing polymers comprising tris(2,4,6-tribromophenoxy)-s-triazine (FR-245), antimony trioxide and polytetrafluoroethylene (PTFE), wherein the bromine concentration in said fire-retardant formulation is from about 9.0 to about 10.5 wt. %, said antimony trioxide concentration being lower than about 3.2 wt. %.

Abstract: A fire-retardant formulation for styrene-containing polymers comprising tris(2,4,6-tribromophenoxy)-s-triazine (FR-245), antimony trioxide and polytetrafluoroethylene (PTFE), wherein the bromine concentration in said fire-retardant formulation is from about 9.0 to about 10.5 wt. %, said antimony trioxide concentration being lower than about 3.2 wt. %.

Abstract: Composition comprising fluoropolymers, such as polytetrafluoroethylene (PTFE), poly(hexafluoroethylene), poly(tetrafluoroethylene-hexafluoroethylene), and poly(tetrafluoroethylene-ethylene-propylene), which are dispersed in flame retardants, such as organic, bromine compounds and/or organic phosphorus compounds, and that consist of particles that comprise one or more fluoropolymers and flame retardants. The fluoropolymers may be enveloped by the flame retardant.

Abstract: This invention provides a flame retardant for polymeric compositions which is a mixture consisting of high molecular weight brominated epoxides modified with tribromophenol, having a low content of organic solvents. The invention further relates to a method for the preparation of the retardant, and to its use in flame retarded engineering thermoplastics having good chemical, thermal, and mechanical properties.

Abstract: The present invention discloses a novel fire retardant composition that includes hexabromocyclododecane (HBCD) and an epoxy resin, including halogenated bisphenolic epoxy resins, halogenated phenol novolac epoxy resins, halogenated cresol novolac epoxy resins, halogenated resorcinol epoxy resins, halogenated hydroquinone epoxy resins, halogenated bisphenol A novolac epoxy resins, halogenated methyl resorcinol epoxy resins and halogenated resorcinol novolac epoxy resins, where the epoxy resin has an epoxy equivalent ranging from 150 to 800 g/eq. The addition of the epoxy resin improves heat stability of HBCD, allowing an increase in the processing temperature.

Abstract: Epoxy resins which are diglycidyl ethers of tetrabromobisphenol A having a crystalline structure and in particulate form have an epoxy equivalent weight between 320 and 380 g/eq and a chlorine content that is smaller than 0.3%.