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US 3,989,531 AGranted
Fire-retardant polymeric compositions containing brominated biphenols
AssigneeGeneral Electric Company
InventorsCharles M. Orlando, Francois A. Lavallee
Life of this patent
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Abstract
Bromobiphenols comprising 2,2' ,6,6'-tetraalkyl-3,3',5,5'-tetrabromo-1,1'-biphenols and derivatives thereof are employed as fire-retardant additives for normally flammable resins yielding fire-retardant polymeric compositions. These fire-retardant compositions are thermally stable and can be molded or formed into fire-retardant articles, such as films, sheeting, fibers, laminates, or reinforced plastics by conventional techniques.
Claims11
A fire-retardant polymeric composition comprising
- a. a normally flammable polystyrene resin, and
- b. a fire-retardant additive selected from halogenated monomeric and polymeric organic compounds of the formula:
- ##SPC6##
- wherein each R independently is selected from primary alkyl groups, each R.sup.1 independently is selected from hydrogen, or organic radicals, and n is a positive integer of at least 1.
1 more element
A fire-retardant polymeric composition comprising:
- a. a normally flammable polystyrene resin, and
- b. a fire-retardant additive selected from halogenated monomeric and polymeric organic compounds of the formula:
- ##SPC10##
- wherein each R independently is selected from primary alkyl groups, each R.sup.1 independently is hydrogen.
1 more element
Dependencies are inferred from the claim text.