Patent ID: 6180728
Filing Date: 2001-01-30
Classification: B01J,C08G,Y02P

Abstract:
Apparatus for the semi-continuous polymerisation of monomers with the use of a chain initiator, characterised in that it comprises:a reactor (1) arranged with its axis substantially vertical and defining a lower frusto-conical part (III), an upper, atomisation part (I) and an intermediate part (II), the section of the upper part (I) being larger than that of the intermediate part (II) and the reactor (1) being provided with:inlet apertures (8), (10), (20), (21) for the monomer and initiator,at least one outlet aperture (12),at least one atomiser (9) located in the upper part (I),at least one atomiser (11) for atomising the monomer in the reactor (1), located in the upper part (I),at least one distributor device (24) located in the lower part (III) for distributing the monomer vaporised in the reactor,a stirrer (25) arranged longitudinally within the tubular body of the reactor (1),means (6) for heating and cooling the intermediate part (II) and the lower part (III),a recycling duct (15) connected at one end to the outlet aperture (12) and at the other end to the upper part (I) through a pump (3) and the at least one atomiser (9),valve means (26) for the alternate use of the said at least one atomiser (9) and the at least one distributor device (24) and,valve means (4) for shutting off the recycling duct (15).