'A PROCESS FOR PREPARATION OF NANOPARTICLES OF HIGHER MOLECULAR WEIGHT OF POLYSTYRENE'

摘要

The invention discloses a process for preparation of nanoparticles of higher molecular weight of polystyrene comprising steps of; (a) introduction of benzene into the reactor followed by introduction of AlCl3 into the reactor maintained at a temperature of 30-70°C which is increased to 60-100°C; (b) introduction of ethylene into the reactor maintained at 70-130°C for 1-6 hours at a pressure of 0.1 to 2 MPa; (c) addition of Magnesium oxide to the solution obtained above, which is heated at a temperature of 400°C-800°C followed by separation of styrene, which is added with a catalyst and heated in the reactor at 100°C to obtain a me (d) heating of the melt containing polystyrene and traces of styrene at a temperature of 120°C-200°C to remove styrene monomer; (e) addition of solvent to the mixture obtained above followed by heating 75°C-150°C to obtain a clear solution; and (f) separation of polystyrene as herein described to obtain the nano sized polymer.