US Patent 10961367 Processes for recycling polystyrene waste
Patent 10961367 was granted and assigned to Polystyvert on March, 2021 by the United States Patent and Trademark Office.
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Processes for recycling polystyrene waste. The processes can comprise dissolving the polystyrene waste in ethylbenzene under conditions to obtain a polystyrene/ethylbenzene mixture, adding the polystyrene/ethylbenzene mixture to a hydrocarbon polystyrene non-solvent under conditions to obtain precipitated polystyrene and washing the precipitated polystyrene with additional portions of hydrocarbon polystyrene non-solvent under conditions to obtain twice-washed polystyrene. The twice-washed polystyrene can optionally be dried and formed into polystyrene pellets. There is also provided recycled polystyrene obtained from such processes for recycling polystyrene waste.
US Patent 10961367 Processes for recycling polystyrene waste
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