NOVELTY - Apparatus (100) comprises: a reaction vessel (101) constructed and arranged to receive the high molecular weight organic materials and enclose a liquid mass; an opening in the vessel to receive organic materials; a source of microwave energy which is introduced into the vessel through a waveguide port, constructed and arranged to impinge upon to heat the materials and cause microwave depolymerization; an agitator (108) to agitate and mix the liquid mass to maximize microwave absorption; and a collection apparatus constructed and arranged to remove the liquid state and vapor state portions.    USE - The apparatus is useful for the continuous processing of high molecular weight organic materials comprising at least one of waste plastics, waste oils, petroleum residues, tires, oil sands, oil shale and cellulose materials, where the organic materials are plastics recovered and/or diverted from municipal solid waste (all claimed).    ADVANTAGE - The apparatus utilizes the thermal zone, which is a simple way to augment the capacity and efficiency of the microwave depolymerization zone by adding additional energy from an inexpensive and non-microwave source, rather than solely using microwave energy.    DETAILED DESCRIPTION - Apparatus (100) comprises: a reaction vessel (101) constructed and arranged to receive the high molecular weight organic materials and enclose a liquid mass; an opening in the reaction vessel to receive the high molecular weight organic materials; a source of microwave energy which is introduced into the reaction vessel through a waveguide port, constructed and arranged to impinge upon to heat the materials within the reaction vessel and cause microwave depolymerization of the materials through microwave absorption by the materials; an agitator (108) to agitate and mix the liquid mass to maximize microwave absorption; and a collection apparatus constructed and arranged to remove at least one of the liquid state portion and the vapor state portion of the materials from the reaction vessel, where: the depolymerization is carried out by microwave energy heating the materials to form liquid state portions and vapor state portions; the liquid mass (105) is maintained in the liquid state during processing of the materials; the microwave absorption into the liquid mass effects microwave depolymerization via rapid heating and quenching so as to form long-chain liquid products; the long-chain liquid products produced are synthetic oils used in the production of fuels, waxes and lubricants; the temperature of a portion of the reaction vessel is 350-425 degrees C. An INDEPENDENT CLAIM is also included for continuous processing of high molecular weight organic materials, comprising introducing the materials into a reaction vessel, using a source of microwave energy to introduce impinging microwave energy into the reaction vessel, where the depolymerization by microwave energy heats the materials to form liquid state portions and vapor state portions, maintaining the temperature of one of the portions of the reaction vessel at 350-425 degrees C, where the liquid mass is maintained in the liquid state during processing of the materials, providing at least one of a mechanical mixer and a gaseous material input within the reaction vessel, and mixing the liquid mass in the reaction vessel, and removing at least one of the liquid portion and the vapor portion of the materials.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic illustration of the microwave depolymerization process.    Depolymerization apparatus (100)    Vessel (101)    Microwave cavity (104)    Reacting mass (105)    Mechanical agitator (108)