Patent ID: 8445087

Claim:
A molding composition of at least the following 3 components, comprising: at least about 70% by weight of a polypropylene or polypropylene random copolymer; up to 30% by weight of a block copolymer composition comprising at least one selectively hydrogenated styrene diene block copolymer having the general formula of S-HD-S or (S-HD) x -Z, where S is polymerized block of monoalkenyl aromatic hydrocarbon monomers, HD is a hydrogenated block of polymerized conjugated diene monomer or monomers, and Z is a coupling agent, and x is the number of arms which can vary from 1 to 20, and at least 2500 ppm of a clarifying agent conforming to the structure of Formula (I) wherein R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 , and R 10 are each independently selected from the group consisting of hydrogen, alkyl groups, alkoxy groups, alkenyl groups, aryl groups, carboxyl groups, and halogens; and R 11 is a hydroxyalkyl group selected from the group consisting of —CH 2 OH and —CHOHCH 2 OH, wherein said block copolymer composition has a refractive index that substantially matches said polypropylene or polypropylene random copolymer (+/−0.008 refractive index units) and the glass transition temperature of the HD block is about −50° C. to −55° C. as measured by DSC.