| 摘要 |
The invention concerns a copolymer of ethylene and of at least one alpha-olefin obtained by means of a catalytic solid with chromium oxide base deposited on an inorganic support, said copolymer having an index of fluidity HLMI measured in g/10 min, an amount Q of alpha-olefin, expressed in g of alpha-olefin per kg of copolymer, a standard volume mass MVS measured in kg/m<3>, at least equal to (952.75 + 5.40 x log HLMI - 0.79 x Q), and a relatively large molar mass distribution, characterised by a dynamic viscosity ratio mu 0/ mu 2 at least equal to (23.67 - 6.67 x log HLMI).
|
