ИСТИНА

The present invention provides a process for producing propylene polymers having a crystallinity of at least 20 % where the process comprising contacting a monomer mixture comprising propylene with a catalyst comprising (A) a metallocene compound having the formula (I) below and (B) and activator for said metallocene, f f f f f f f f QR 2 (lndR 7-p ) 2 MeX 2 f f f f f(I) wherein Ind is a ligand having indenyl or tetrahydroindenyl structure, each R independently is an alkyl, aryl, alkylaryl, arylalkyl, alkylene, silyl, alkoxy or siloxy group having from 1 to 30 carbon atoms, Q is Si or C, Me is a transition metal of group 4 or 5, each X independently is a halogen, or an alkyl, aryl, alkylaryl, arylalkyl, alkylene, silyl, alkoxy or siloxy group having from 1 to 30 carbon atoms and p is an integer from 1 to 6, characterized in that Q is a bridging group connecting one of the carbons 1 to 3 of one ligand Ind to one of the carbons 4 to 7 of the other ligand Ind. The process according to the present invention produces homo- and copolymers of propylene having a high melting temperature and a high molecular weight.