MANUFACTURE OF NON-CRYSTALLINE HIGH MOLECULAR DRAG-REDUCING POLYMER

摘要

A process for the preparation of a drag reducing substance which comprises: a) a transition metal catalyst slurry containing: 1. crystalline titanium halide having the general formula TiXn where n = 2.5 to 3.0 and X is halogen; 2. a hydrocarbon diluent, and 3. an ether; b) a co-catalyst; c) alpha-monoolefinic hydrocarbons containing from 2 to 30 carbon atoms under suitable polymerization conditions providing for an ultrahigh molecular weight polymer that is soluble in hydrocarbons; and d) ceasing the polymerization at a polymer content of 20 percent by weight or less.