The present invention provides a
polymer alloy including from about 40% to about 75% by weight of at least one
polyamide, from about 10% to about 50% by weight
polypropylene, from about 0.01% to about 1.0% by weight of at least one block
copolymer including a vinyl aromatic
monomer and a
conjugated diene, and also includes an unsaturated dicarboxylic
reagent, from about 0.1% to about 5.0% by weight of at least one block
copolymer or terpolymer, wherein the terpolymer may have an unsaturated dicarboxylic
reagent grafted thereto, from about 0.01% to about 7.5% of a compatibilizing agent, and from about 5% to about 50% by weight of a filler. The
alloy of the present invention exhibits improved knitline strength and improved
drop impact results compared with prior art fiberglass-reinforced nylon blends.