Patent ID: 6919414
Filing Date: 2005-07-19
Classification: C08F,C08J,C08L,Y10S

Abstract:
1. A process for preparing copolymers of ethylene and alpha olefins having 3 to 10 carbon atoms having (a) a density in the range 0.900 to 0.940 (b) an apparent Mw/Mn of 2-3.4 (c) I (d) activation energy of flow from 28 to 45 kJ/mol (e) a ratio Ea(HMW)/Ea(LMW) >1.1, and (f) a ratio g′(HMW)/g′(LMW) from 0.85 to 0.95, said process carried out in the presence of a catalyst system comprising (a) a metallocene complex of the general formula  wherein: (b) a borate, and (c) a support.