dc.description.abstract |
Styrene, ethyl benzene and cis-polybutadiene (for high impact grade) are
added and kept in a dissolver for 6-8 hours to ensure a complete dissolution
of the rubber. This mixture is filtered and fed to the first of two
reactors maintained at l120C where the conversion is 8.7 (maintaining the
solution beyond the phase inversion point). In the second reactor, 95
r percent of the styrene is converted by the end of the react ion, when the
temperature has risen to about 1650C.
Polymerisation is completed in a finishing column held at 2200C for 1-2
hours followed by cooling, extrusion and pelletising. |
en_US |