Method for the production of polymers of C2 through C12 alkenes with the addition of a reaction retardant

摘要

A process for the production of polymers of 2-12C alkenes at -50 to 300 degrees C and 0.5-3000 bar in presence of a catalyst system, with the addition of a compound of formula H-M1)R2)R1 (I); where M1 = B, Al, Ga, In or Tl; R1, R2 = H, 1-10C alkyl, 6-15C aryl, or alkaryl or aralkyl with a 1-10C alkyl and a 6-20C aryl group, or 5- to 7-membered cycloalkyl (optionally substituted with 1-10C alkyl); or R1 + R2 may form a 4-15C cyclic group. Preferably R1 and R2 together form part of a 4-15C bicyclic group; M1 = boron. The catalyst system contains (A) a metallocene complex and (B) a metallocenium ion-forming compound. A metal compound of formula M4)R24)r(R25)s(R26)t (IV) may also be added; M4 = alkali or alkaline earth metal, or a Sub-Group III metal, i.e. B, Al, Ga, In or Tl; R24 = 1-10C alkyl, 6-15C aryl, or alkaryl or aralkyl with 1-10C alkyl and 6-20C aryl groups; R25, R26 = as for R24, or also halogen or 1-10C alkoxy; r = 1-3; s, t = 0-2; r + s + t = the valency of M4.