Appeal No. 1999-1418 Application No. 08/418,847 under a pressure of 0.5 to 100 bar, in solution, in suspension or in the gas phase and in the present of a catalyst which consists essentially of a metallocene and an aluminoxane of the formula (II) for the linear type, and/or of the formula (III) for the cyclic type, in which, in the formulae (II) and (III), R is a C -C -alkyl group and n is an integer from 2 to 50,10 1 6 7Page: Previous 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 NextLast modified: November 3, 2007