Moldable flame-retardant thermoplastic styrene polymers

Details Moldable flame-retardant thermoplastic styrene polymers Moldable flame-retardant thermoplastic styrene polymers

C - Chemistry, Metallurgy

08

K

400/1101, 400/49

C08K 5/34 (2006.01) C08K 5/00 (2006.01) C08K 5/3412 (2006.01) C08L 25/04 (2006.01)

Patent

CA 1145086

ABSTRACT OF THE DISCLOSURE: The invention relates to a flame-retardant thermo- plastic materials comprising (a) polymers or copolymers of styrene, (b) organic halogen compounds having an halogen content of at least 35%,in amounts effective as flame retardants, and (c) halogen-free compounds, having labile -C-C- linkages, synergistic with the flame retardants wherein said synergistic compounds contain at least one amide or imide grouping each or mixtures of these groupings bonded to the -C-C-bridge member according to the formula Image and wherein R1, R2, R3 and R4 are selected from the group con- sisting of linear or branched saturated alkyl radicals con- taining 1 to 10 carbon atoms, saturated cyclic radicals con- taining 5 to 10 carbon atoms, and alkyl-substituted cycloalipha- tic radicals containing 5 to 10 carbon atoms, and wherein Z is a heterocyclic amide or imide, saturated or unsaturated, which may or may not be substituted on the carbon atoms with alkyl or alkenyl radicals containing 1 to 4 carbon atoms, and which cyclic amide or imide may have an aromatic ring as part of the heterocyclic ring, and said aromatic ring may be substituted with alkyl radicals containing 1 to 4 carbon atoms. These flame-retardant materials are employed to prepare thermoplastic molded parts.

341812

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