Abstract:
Phosphorus-sulfur compounds have flame retardant activity in organic polymer systems. The phosphorus-sulfur compounds can be represented by the structure: Formula (I) wherein X is oxygen or sulfur, T is a covalent bond, oxygen, sulfur or nitrogen, provided that at least one of X and T is sulfur, each X' is independently oxygen or sulfur, each m is independently zero or 1 when X' is oxygen and zero, 1 or 2 when X' is sulfur, n is at least 1 and preferably at least 2, each R is independently an unsubstituted or inertly substituted hydrocarbyl group or the R groups together form an unsubstituted or inertly substituted divalent organic group and A is an organic linking group.
Abstract:
Aliphatic bromine-containing polymers are stabilized using a mixture of an alkyl phosphite and an epoxy compound. This stabilizer package is very effective at preventing cross-linking reactions from occurring when the aliphatic bromine-containing polymer is subjected to high temperatures as are seen in melt processing operations. The stabilized aliphatic bromine-containing polymer is useful as a flame retardant for other polymers, notably polystyrene foam.
Abstract:
Certain phosphorus- sulfur compounds are effective in reducing the LOI of combustible organic polymers and in providing better FR characteristics to the polymers as determined by other standardized tests. The phosphorus-sulfur compounds are sulfur-bridged, metal-bridged or in the form of salts such a ammonium, sulfonium or phosphonium salts.
Abstract:
A thermally stable brominated butadiene copolymer, such as brominated styrene/butadiene block copolymer, brominated random styrene/butadiene copolymer or brominated styrene/butadiene graft copolymer, preparation of the brominated butadiene copolymers, use of the brominated butadiene copolymers as a flame retardant additive and polymeric compositions, both foamed and non-foamed, that incorporate a flame-retarding amount of brominated butadiene copolymer.
Abstract:
A thermally stable brominated butadiene copolymer, such as brominated styrene/butadiene block copolymer, brominated random styrene/butadiene copolymer or brominated styrene/butadiene graft copolymer, preparation of the brominated butadiene copolymers, use of the brominated butadiene copolymers as a flame retardant additive and polymeric compositions, both foamed and non-foamed, that incorporate a flame-retarding amount of brominated butadiene copolymer.
Abstract:
Extruded polymer foams are prepared using brominated fatty acids, an ester, amide or ester-amide of a brominated fatty acid, a glyceride of one or more brominated fatty acids, or a polymerized brominated fatty acid as an FR additive. The brominated FR additives unexpectedly are stable at the extrusion temperatures, and provide excellent flame retardancy to the foams.
Abstract:
Phosphorus-sulfur compounds have flame retardant activity in organic polymer systems. The phosphorus-sulfur compounds can be represented by the structure: Formula (I) wherein X is oxygen or sulfur, T is a covalent bond, oxygen, sulfur or nitrogen, provided that at least one of X and T is sulfur, each X' is independently oxygen or sulfur, each m is independently zero or 1 when X' is oxygen and zero, 1 or 2 when X' is sulfur, n is at least 1 and preferably at least 2, each R is independently an unsubstituted or inertly substituted hydrocarbyl group or the R groups together form an unsubstituted or inertly substituted divalent organic group and A is an organic linking group.
Abstract:
Un copolímero bromado estable térmicamente, teniendo polimerizado el copolímero un resto de butadieno y un resto de monómero vinílico aromático, teniendo el copolímero antes de la bromación un contenido de monómero vinílico aromático de 5 a 90 por ciento en peso, basado en el peso del copolímero, un contenido de isómero 1,2 de butadieno mayor que 0 por ciento en peso, basado en el peso de restos de butadieno, y un peso molecular medio ponderal de por lo menos 1.000, teniendo el copolímero bromado un contenido de dobles enlaces no aromáticos, no bromados, igual o menor que 15 por ciento, basado en el contenido de dobles enlaces no aromáticos del copolímero antes de la bromación, determinado por espectroscopia de 1H-NMR, y una temperatura de pérdida de peso del cinco por ciento, determinada por análisis termogravimétrico (TGA), de por lo menos 200 grados centígrados.
Abstract:
A thermally stable brominated butadiene copolymer, such as brominated styrene/butadiene block copolymer, brominated random styrene/butadiene copolymer or brominated styrene/butadiene graft copolymer, preparation of the brominated butadiene copolymers, use of the brominated butadiene copolymers as a flame retardant additive and polymeric compositions, both foamed and non-foamed, that incorporate a flame-retarding amount of brominated butadiene copolymer.
Abstract:
A thermally stable brominated butadiene copolymer, such as brominated styrene/butadiene block copolymer, brominated random styrene/butadiene copolymer or brominated styrene/butadiene graft copolymer, preparation of the brominated butadiene copolymers, use of the brominated butadiene copolymers as a flame retardant additive and polymeric compositions, both foamed and non-foamed, that incorporate a flame-retarding amount of brominated butadiene copolymer.