Technology

Continuous Loop Flow Process to produce Polyether Polyols with a narrow range of molecular weights, with little if any unsaturated Byproducts, with efficient heat transfer, and/or at high Production rates, employing a Double Metal Cyanide (DMC) Catalyst. The Continuous Loop Flow Process may use one or more continuous Flow Loops comprising a Heat Exchanger, a means to move material around each Loop, inlets for Catalyst, Monomer, Initiator or Starter, and an outlet for Polyol Product. The Product from the Outlet of the Loop is sent to a Tubular Reactor as it is desirable at the end of the Process or during the Production of Block Copolymers, for example, when a Monomer that has been used in a Loop Flow Reactor is not desired in the Loop Flow Reactor that follows.