C - Chemistry – Metallurgy – 08 – K
Patent
C - Chemistry, Metallurgy
08
K
400/1707, 400/64
C08K 5/34 (2006.01) C08J 9/00 (2006.01) C08K 5/00 (2006.01) C08K 5/02 (2006.01) C08K 5/06 (2006.01) C08K 5/3475 (2006.01) C08L 25/04 (2006.01) C08L 55/02 (2006.01)
Patent
CA 1153843
ABSTRACT Disclosed is a polystyrenic composition having improved fire retardant properties, the composition com- prising a polystyrenic resin, a fire retardant amount of halogenated organic fire retardant agent selected from the group consisting of acetylene tetrabromide, dibromotetra- chloroethane, tetrachloroethane, pentachloroethane, hexa- chlorobenzene, hexabromobenzene, hexachlorobenzene, hexabromobenzene, tetrabromobutane, polyhalobiphenols, polyhalobiphenolethers, perhalopentacyclododecanes, pentabromomonochlorocyclohexane, and mixtures thereof, and a benzotriazolic compound having the formula Image wherein R1 is H or -CH3 and R2 is H or -CH2N(R3)2 wherein R3 is H, an alkyl radical containing from about 1 to 12 carbon atoms or -CH2CH2OH in the amount from about 1 and 50% of the weight of the fire retardant agent. The composition may be used in producing shaped or molded forms from expandable polystyrene beads or extruded shapes of mixtures of polystyrene and a foaming agent.
345833
Gowling Lafleur Henderson Llp
Labofina S.a.
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