| abstract |
The present invention relates to apparatus for the semi-continuousnpolymerisation of monomers with the use of anchain initiator. This apparatus is characterised in thatnit comprises a reactor (1) arranged with its axisnsubstantially vertical and defining a lower, frusto-conicalnpart (III), an upper atomisation part (I) and annintermediate part (II), the reactor (1) having monomernand initiator inlet apertures (8), (10), (20), (21), atnleast one outlet aperture (12), a recycling duct (15)nconnected at one end to the outlet aperture (12) and atnthe other end to the upper part (I) through at least onenatomiser (9), and a stirrer (25). n The apparatus according to the invention has thenparticular advantage of being usable for reactions withnany type of chain initiator and catalyst, whether theynare solid, liquid or in suspension. The apparatusnaccording to the invention may also be used in situationsnwhere there is risk of damage to the catalyst if this isnpumped and in situations where the product obtained hasnas a viscosity such that it cannot be recycled further. |