Patent ID: 7763675

Claim:
A method of using nuc-PP with organoclay to improve toughness of nuc-PP, comprising mixing organoclay and olefin elastomer into a high flexural modulus nucleated polypropylene to form a nano-nuc-PP compound, wherein the amount of olefin elastomer ranges from 18 and 35 weight percent of the compound, wherein the high flexural modulus nucleated polypropylene is polypropylene resin which has a nucleating agent included in the polypropylene resin and wherein the nucleated polypropylene has a flexural modulus of at least about 1378 MPa, wherein the nano-nuc-PP compound has a stiffness ranging from about 1723 MPa to 2758 MPa, wherein the nano-nuc-PP compound has a toughness ranging from about 8 ft.-lb./in. to about 15 ft.-lb./in., and wherein the nano-nuc-PP compound has a melt flow ranging from about 2 to about 10 g/10 min. @ 230° C.