ADDITION OF ORGANIC INITIATORS DURING THE PRESSURE DROP IN VINYL CHLORIDE MONOMER POLYMERIZATION REACTIONS

摘要

THE INVENTION PERTAINS TO A PROCESS TO POLYMERIZE ONE OR MORE MONOMERS WHEREIN ONE OR MORE INITIATORS AND OPTIONALLY ONE OR MORE SURFACTANTS ARE ADDED TO A POLYMERIZATION MIXTURE WHEN THE PRESSURE IN THE POLYMERIZATION REACTOR IS DROPPING. THIS PROCESS ALLOWS A SHORTER POLYMERIZATION TIME DUE TO A HIGHER PRESSURE DROP RATE AT THE END OF THE POLYMERIZATION REACTION. MOREOVER, THE COOLING CAPACITY OF THE POLYMERIZATION REACTOR IS USED MORE EFFICIENTLY.