Watson Brown HSM Ltd. Patent applications |
Patent application number | Title | Published |
20130137785 | METHOD OF DEVULCANIZING A CROSS-LINKED ELASTOMERIC MATERIAL - A thermoset cross-linked elastomer material, such as scrap tire rubber, is devulcanized by subjecting the material to a mechanical mixing process in the presence of 0.5 to 2% by wt. of an organic catalyst having a thiol terminus. | 05-30-2013 |
20130136820 | APPARATUS FOR PROCESSING SCRAP CROSS-LINKED THERMOSET ELASTOMERIC MATERIAL - An apparatus for processing thermoset cross-linked elastomeric scrap material has a batch-operated high shear mixer for inducing chemical reactions to partly devulcanize the material in a first devulcanizing stage. A continuously-operated multi-screw cooled extruder receives the partly devulcanized material from the high shear mixer and further devulcanizes the material by a mechanical shearing action in a second stage to produce an extruded product for revulcanization. | 05-30-2013 |