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US 2001/0056145 A1Published application
Thermally stable flame retardant polyamides
AssigneeE. I. Du Pont de Nemours and Company
InventorsMARVIN MICHAEL MARTENS, REIKO KOSHIDA, WENDY TOBIN
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Abstract
Certain polyamide molding compositions are disclosed having improved flame resistance and heat stability. These compositions comprise in weight percent, 20-78% polyamide having a melting point of 280-340° C.; 10-60% inorganic filler; 10-35% flame retardant (brominated or chlorinated); 1-10% antimony compound; 1-10% of one or more oxides, hydroxides, or salts of weak mineral acids, and combinations thereof; and 0-2% heat stabilizer.
Claims11
A polyamide molding composition which has both improved flame resistance and heat stability comprising, in weight percent,
- (a) 20-78% polyamide, having a melting point of 280-340° C.,
- (b) 10-60% inorganic filler,
- (c) 10-35% of a flame retardant having 50-70% bromine or chlorine,
- (d) 1-10% antimony compound,
- (e) 1-10% of one or more oxides, hydroxides, or salts of weak mineral acids, and combinations thereof, and
- (f) 0-2% of a heat stabilizer.
3 more elements
Dependencies are inferred from the claim text.