PROCEDURE FOR PRODUCTION OF ISOOLEFIN-DIOLEFIN RUBBER AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2010 - IPC C08F210/12 C08C19/14 C08C2/00 C08F6/10 B29C47/46 B29C47/74 

FIELD: machine building.

SUBSTANCE: there is carried out reaction of co-polymerisation of isobutylene and isoprene producing butyl of rubber in suspension. Suspension of butyl rubber is pressed in a zone of separation. A two-screw extruder with screws of full engagement rotating in one direction is used for pressing. Extracted liquid non-aqueous reaction medium is transported beyond the zone of separation and outside a reaction vessel for re-cycle. Pressed suspension of butyl rubber is directed to a zone of suspension processing. The suspension processing zone is in an evaporating reservoir. The device for butyl rubber production consists of the reaction vessel, of the pressing separator, of the evaporating reservoir and of a pipeline. The pipeline transports liquid non-aqueous reaction medium beyond the reaction vessel. The two-screw extruder functions as a pressing separator. The facility for transfer of butyl rubber from the reaction vessel into the evaporating reservoir consists of a cylinder, an inlet port, and of an outlet port. The facility also includes a set of screws of full engagement rotating in one direction, a motor, a reducer and the pipeline. A liquid non-aqueous medium is transported via the pipeline from the zone of separation beyond the reaction vessel. The procedure ensures more efficient separation and direction of cooled liquid reaction medium to recycle.

EFFECT: transporting of suspension of butyl rubber from reaction vessel into evaporating reservoir by means of self-cleaning two-screw extruder eliminates problem of clogging caused by rubber adhesion to device surface at suspension overflow.

16 cl, 7 dwg