Patent ID: 6500872
Filing Date: 2002-12-31
Classification: C08J,Y02W

Abstract:
A method for recycling a waste styrene resin material comprising:dissolving the waste styrene resin material in an organic solvent boiling at a temperature lower than 200Â° C. and having solubility not less than 15 wt % at room temperature to prepare a solution of the waste styrene resin material; removing impurities from the solution of the waste styrene resin material; adding an anti-oxidant having a low vapor pressure to the solution of the waste styrene resin material freed of the impurities; and vacuum heating the solution of the waste styrene resin material freed of the impurities to remove the volatile components and the organic solvent to reduce the amount of the residual solvent in the styrene resin to not larger than 0.4 wt % to recycle the resulting styrene resin as a regenerated styrene resin.