Patent ID: 6627713
Filing Date: 2003-09-30
Classification: B01J,C08F,C08K,Y10S

Abstract:
A method for vapor phase polymerizing 1,3-butadiene into high cis-1,4-polybutadiene in a process comprising the steps of:(1) charging said 1,3-butadiene and a catalyst comprising: (a) an organoaluminum compound, (b) a soluble organonickel compound, and (c) hydrogen fluoride or a hydrogen fluoride complex into a reaction zone; wherein the 1,3-butadiene is maintained in the vapor phase in said reaction zone by a suitable combination of temperature and pressure such tat a portion of the monomer in the reaction zone is a liquid that is not absorbed in or on solid particulate matter; (2) allowing said 1,3-butadiene to polymerize into high cis-1,4-polybutadiene at a temperature within the range of 20Â° C. to 120Â° C.; and (3) withdrawing said high cis-1,4-polybutadiene from said reaction zone.