Experimental industrial production of low-molecular polybutylenes (octols)

Summary

• 1. The polyisobutylene production unit of Salavat Petrochemical Combine was used to show the possibility of producing various low molecular polybutylenes (octols) by a continuous method with a catalyst complex of aluminum chloride and alkylbenzenes in “complete mixing” reactors designed by Leningrad Scientific-Research and Design Institute of Chemical Machinery.

• 2. Production of the following was demonstrated:

• a) Octol-600 in one step.

• b) Octol starting material for succinimide additives with a viscosity of 148–179 cS at 100° in two stages.

• c) Cable grade octol with the viscosity of 78–101 cS at 100° both in one-and two-step polymerization of a butane-butylene fraction.

• 3. The aqueous-alcoholic caustic solution used for deactivation of catalyst and neutralization of hydrogen chloride ensured neutrality and a high quality of the octols obtained.