Process to produce a composition of interpolu00edmero / ethylene (alpha - olefin)

摘要

Process for controlling the distribution of molecular weight in the production of a composition of interpolu00edmero / ethylene 244 - olefin and composition.The present invention relates to composiu00e7oes and processes to produce polymers having a distribuiu00e7u00e3ode molecular weight controlled.The distribution of the molecular weight is controlled, for example,By controlling the relative concentrations of monomers for contact with a pre catalyst and / or using a catalyst comprising a catalytic quantity of a molecule having the structure:M = metal from group 2 to 8, preferably group 4 as a neutral or charged portion; and a substituent including rings fused; L = any group binder, especially a piridila,Or piridilamida; X = alkyl, substituted alkyl, h or arila, hydride, halide or other anionic portion; y = a whole number from 0 to the full valence of M; r = alkyl, arila, haloalquila,Haloarila, hydrogen, etc.; X = 1 - 6, especially 2; dashed line = optional connection, especially a weak connection; and X and (Cr ~ (2 ~) x can be attached to or part of a ring.