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AssigneeSiemens Axiva GmbH & Co. KG
InventorsOlaf Mientkewitz, Elke Schweers, Ulrich Bauer, Helmut Gursky, Hubert Muller, Raimo Drogemeier
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The invention relates to a process for the comminution of bulk materials comprising synthetic polymers which do not have an elastomeric behavior by mechanical, thermal or electromagnetic loading of the bulk materials, which comprises treating the bulk materials, before and/or during the loading, with oxidants which have a redox potential of greater than 1.5 V or subjecting them to corona, UV or plasma treatment without complete oxidation of the synthetic polymer taking place.
A process for the comminution of bulk materials comprising synthetic polymers which do not have an elastomeric behavior by mechanical, thermal or electromagnetic loading of the bulk materials, which comprises treating the bulk materials, before and/or during the loading, with oxidants which have a redox potential of greater than 1.5 V or subjecting them to corona, UV or plasma treatment without complete oxidation of the synthetic polymer taking place.
A process for the comminution of bulk materials comprising synthetic polymers which have an elastomeric behavior by mechanical, thermal or electromagnetic loading of the bulk materials, which comprises treating the bulk materials, before and/or during the loading, with oxidants selected from the group consisting of permanganic acid, hydrogen peroxide, silver salts, peroxydisulfuric acid, atomic oxygen or fluorine without complete oxidation of the synthetic polymer taking place.
The process as claimed in one of the preceding claims, wherein the or each oxidant is used in gaseous form.
A process for the comminution of bulk materials comprising synthetic polymers by mechanical, thermal or electromagnetic loading of the bulk materials, which comprises subjecting the bulk materials to corona treatment before and/or during the loading.
A process for the comminution of bulk materials comprising synthetic polymers by mechanical, thermal or electromagnetic loading of the bulk materials, which comprises subjecting the bulk materials to UV treatment before and/or during the loading.
A process for the comminution of bulk materials comprising synthetic polymers by mechanical, thermal or electromagnetic loading of the bulk materials, which comprises subjecting the bulk materials to plasma treatment before and/or during the loading.
The process as claimed in one of the preceding claims, wherein the comminution of the treated solid is carried out by impact, shear or pressure.
The process as claimed in claim 24, wherein the comminution of the treated solid is carried out in a jet mill or impact disk mill.
The process as claimed in one of the preceding claims, wherein cellulose derivatives, polyacetylene, polyacrylates, polyamides, polyaromatic compounds, polyesters, polyethers, polyketone, polyolefins, polyurethanes, polyvinyl compounds, or copolymers or mixtures of these plastics, are comminuted.
The process as claimed in one of claims 1 to 26, wherein bulk materials, powders or particulate systems are comminuted.
Dependencies are inferred from the claim text.