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US 4,391,936 AGranted
Molding blends
AssigneeE. I. Du Pont de Nemours and Company
InventorMarion G. Waggoner
Life of this patent
Estimating the term…
Abstract
Certain polyamide molding blends containing carbon black and nigrosine are described which have greater elongation and impact strength than blends of such polyamide and carbon black alone.
Claims3
A polyamide molding blend consisting essentially of
- (a) at least one polyamide of film-forming molecular weight,
- (b) about 1-3 percent by weight of polyamide of carbon black, and
- (c) between about 0.1-2 percent by weight of polyamide of nigrosine.
Dependencies are inferred from the claim text.