Patent ID: 7812104

Claim:
A process for producing a propylene-based olefin homopolymer or copolymer, the process comprising contacting a monomer composition comprising propylene with a polymerization catalyst system under homogeneous polymerization conditions and at a temperature of about 100° C. to about 195° C., wherein the polymerization catalyst system includes an activator and a catalyst compound of the formula: wherein M is a transition metal selected from group 4 of the Periodic Table of the Elements; each R 1 is, independently, hydrogen, or a hydrocarbyl, substituted hydrocarbyl, halocarbyl, substituted halocarbyl, silylcarbyl, substituted silylcarbyl, germylcarbyl, or substituted germylcarbyl substituents, and optionally, adjacent R 1 groups may join together to form a substituted or unsubstituted, saturated, partially unsaturated, or aromatic cyclic or polycyclic substituent; each R 2 , R 3 , R 5 , R 6 and R 7 is independently, hydrogen, or a hydrocarbyl, substituted hydrocarbyl, halocarbyl, substituted halocarbyl, silylcarbyl, substituted silylcarbyl, germylcarbyl, or substituted germylcarbyl substituents; Y is a bridging group; and each X is, independently, hydride radicals, hydrocarbyl radicals, substituted hydrocarbyl radicals, halocarbyl radicals, substituted halocarbyl radicals, silylcarbyl radicals, substituted silylcarbyl radicals, germylcarbyl radicals, or substituted germylcarbyl radicals; or both X are joined and bound to the metal atom to form a metallacycle ring containing from about 3 to about 20 carbon atoms; or both together can be an olefin, diolefin or aryne ligand; or both X may, independently, be a halogen, alkoxide, aryloxide, amide, phosphide or other univalent anionic ligand or both X can also be joined to form a anionic chelating ligand; 2) obtaining a polymer having a melting point of 155° C. or more, and an Mn of 120,000 g/mol or more (GPC-DRI, relative to linear polystyrene standards).