Abstract: An expandable polymeric styrene particle is provided from which molded foamed articles can be produced exhibiting reduced flammability characteristics. The expandable polymeric styrene particle contains a blowing agent, a minor amount of bis(allyl ether) of tetrabromobisphenol A and a minor amount of dibromoethyldibromocyclohexane. The additives can be incorporated during impregnation with the blowing agent or by blending with the expandable particles after impregnation.

Abstract: An expandable polymeric styrene particle is provided from which molded foamed articles can be produced exhibiting reduced flammability characteristics. The expandable polymeric styrene particle contains a blowing agent, a minor amount of bis(allyl ether) of tetrabromobisphenol A and a minor amount of pentabromomonochlorocyclohexane. The additives can be incorporated during impregnation with the blowing agent or by blending with the expandable particles after impregnation.

Abstract: Polyolefins such as polyethylene, polypropylene, and the like are rendered flame retardant by incorporating therein about 2-60 percent of a combination of (1) a Diels-Alder adduct of a chlorinated cyclopentadiene and a polyunsaturated cycloaliphatic compound and (2) a brominated aromatic compound.

Abstract: An expandable polymeric styrene particle is provided from which molded foamed articles can be produced exhibiting reduced flammability characteristics. The expandable polymeric styrene particle contains a blowing agent, a minor amount of bis (allyl ether) of tetrabromobisphenol A and a minor amount of dibromoethyldibromocyclohexane. The additives can be incorporated during impregnation with the blowing agent or by blending with the expandable particles after impregnation.

Abstract: Extruded styrenic polymer foams having improved flammability characteristics are obtained when using volatile fluid blowing agents by incorporating therein a small amount (e.g., from about 0.03 to about 2 weight percent based on polymer) of a waxy material in conjunction with at least one conventional non-waxy halogenated flame retarding agent.

Abstract: A flame-retardant and radiation-resistant polymer composition comprising a polymer and a halogenated acenaphthylene condensate having a structural unit of the formula (I) or (II): ##STR1## (wherein X is chlorine or bromine, n and n' are each an integer of 2 to 6, R is a substituent other than halogen, m and m' are each an integer of 0 to 4, n (or N')+m(or m').ltoreq.6, and when m or m' is 2 or more, each R may be the same or different) and a flame-retardant and radiation-resistant resin molded product prepared therefrom are herein disclosed.

Abstract: The electrical properties of polymeric dielectric materials or compounds including polar additives are enhanced by a method of treating the polar additives with a reactive silicone liquid, and the improved polymeric insulation products of the method.

Abstract: A flame-retardant polyamide composition is described which has good arc tracking resistance. The composition is comprised of a polyamide, a selected organic flame-retardant, melamine or derivative, zinc borate or oxide and glass fiber.

Abstract: Trityl compounds wherein a triphenylmethyl group is attached to oxygen, divalent sulfur, trivalent nitrogen or a halogen are effective synergists for organic bromine flame retardants in polypropylene compositions.

Abstract: A resin stabilizer composition which essentially contains:(a) an organotin sulfur-containing compound, for example, organotin mercaptides, organotin mercaptoacids,organotin mercaptoacid esters, organotin sulfides, organothiostannoic acids and the like, and(b) an organic over-based complex of Group I or II-a metal bases, for example, barium phenate or sulfonate, an over-based calcium phenate or sulfonate or the like.These compositions remarkably contribute to the long term heat stability of vinyl halide resins. Furthermore, among other advantages, significant economies and synergistic resin heat stabilization are offered by these stabilizer compositions.

Abstract: Styrene/maleic anhydride polymers can be made more resistant to combustion by incorporation therein of minor amounts of polyvinyl chloride. The compositions can also comprise MBS, ABS and other flame retardant additives.