Patent ID: 6995202

Claim:
A method of producing a thermoplastic article comprising the steps of (a) providing a thermoplastic polymer; (b) providing a thermoplastic additive concentrate comprising at least one polymer constituent, at least one saturated bicyclic dicarboxylate salt nucleating agent, and at least one dispersion aid additive, the dispersion aid additive comprising at least one of a metal carbonate, a metal sulfate, a blend of metal talcites and fatty acid salts, a blend of metal hydrotalcites and fatty acid salts, a blend of metal dihydrotalcites and fatty acid salts, fatty ester-, acid-, or amide modified samples of such metal based compounds, above, or any mixtures thereof; wherein said nucleating agent is present within said concentrate in an amount of from about 2 to about 20% by total weight thereof; (c) incorporating said concentrate within said thermoplastic polymer formulation when both of said thermoplastic polymer formulation and concentrate are in molten form, thereby permitting said concentrate to melt and be mixed within said thermoplastic polymer; and (d) allowing the resultant concentrate-containing thermoplastic polymer to cool.