Fire-retarded propylene polymers having high thermomechanical stability
AssigneeBromine Compounds Ltd.
InventorsIta Finberg, Pierre Georlette
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Abstract
A brominated epoxy oligomer of the formula ##STR1## having a molecular weight of least 3,000, useful as a flame retardant additive for polypropylene and ethylene propylene copolymers is described.
Claims26
A flame retarded propylene polymer composition comprising polypropylene or an ethylene-propylene copolymer and, as a flame retardant additive, a brominated epoxy oligomer of the formula ##STR3## having a molecular weight of greater than 3,000 and up to about 70,000 and wherein n is between about 3.9 and about 115.37.
A process for preparing a flame retarded propylene polymer composition comprising polypropylene or an ethylene-propylene copolymer which comprises compounding the polypropylene or ethylene-propylene copolymer with a flame retardant additive wherein a brominated epoxy oligomer of the formula ##STR4## having a molecular weight of greater than 3,000 and up to about 70,000 and wherein n is between about 3.9 and about 115.37, is used as the flame retardant additive.
Dependencies are inferred from the claim text.