Abstract: Compositions are provided for alleviating or preventing discoloration, known as “scorching”, in flame-retarded flexible polyurethane foams. The anti-scorch compositions contain combinations of antioxidant agents, epoxy compounds, organic phosphites—alone or in combination with metal salts of carboxylic acids. The compositions are useful, for example, for polyurethane foams retarded with aliphatic or aromatic phosphorus-based flame retardants, or with halogen-containing flame retardants.

Abstract: Compositions and methods for alleviating or preventing discoloration in flame-retarded flexible polyurethane foams, known as “scorching”, are provided. The anti-scorch compositions contain antioxidant agents combined with at least one, and preferably with two, additional compounds selected from ?-diketone compounds, epoxy compounds, organic phosphites or phosphonites, and metal salts of carboxylic acids.

Abstract: A bis-polyhalobenzyl compound of the formula: wherein X is oxygen or sulfur, Y is bromine or chlorine, m, n is an integer from 3 to 5 inclusive, for use as a flame retardant, and a process for producing it.

Abstract: An anti-scorch composition for flame-retarded flexible polyurethane foams, comprising, in combination, one or more antioxidant agents, together with one or more salt(s) of an organic acid.

Abstract: The present invention provides novel pentabromobenzyl alkyl ethers serving as highly effective flame retardants in polymers. The invention further provides a fire retarded polymer composition comprising said pentabromobenzyl alkyl ethers.

Abstract: A fire retarded polymer composition, such as polystyrene polymer, copolymer and/or alloy that comprises heat expandable graphite (HEG) and nitrogen-containing fire retardants (N-FR). The polymer may also be homopolymers of styrene, rubber modified high-impact polystyrenes (HIPS), acrylonitrile-butadiene-styrene copolymers (ABS) or styrene-acrylonitrile copolymers (SAN). The polymer may be an alloy consisting of blends in various ratios of polystyrene polymers and/or copolymers with polycarbonates (PC).

Abstract: The present invention provides novel pentabromobenzyl alkyl ethers serving as highly effective flame retardants in polymers. The invention further provides a fire retarded polymer composition comprising said pentabromobenzyl alkyl ethers.

Abstract: A fire retarded polymer composition is disclosed, which comprises a polymer component, at least one halogen-containing fire retardant and a heat expandable graphite. The polymer component is selected from among polystyrenes, polyesters and polyolefins. The halogen of the fire retardant is bromine or chlorine, and the total amount of the fire retardant and the heat expandable graphite is from about 6.5 to about 40% by weight. The composition may also contain a metal oxide fire retardant, such as antimony trioxide, but if so, it contains it in amounts much lower than those required in prior art compositions to achieve the same degree of fire retardancy. It is preferred that the heat expandable graphite be such as to expand 50 times or more on shock heating from room temperature to 900° C. The process by which the expandable graphite is produced is not critical, and it is known, for example, to produce it by oxidation of natural or artificial graphite.