IMPROVED METHOD OF POLYOLEFIN PRODUCTION Russian patent published in 2016 - IPC B29B7/00 

FIELD: chemistry.

SUBSTANCE: invention relates to improved method of producing polyolefin mixtures. Method of obtaining homogeneous polyolefin composition consists in providing one or more olefin polymer components of high molecular weight and one or more polyolefin components of low molecular weight. After that, compounding of olefin polymer component of high molecular weight and polyolefin component of low molecular weight is realised in continuous mixer, which includes two or more non-analogous rotating devices, displaced in upper points with respect to each other to obtain melt of homogeneous polymodal polyolefin. After that, performed is movement of melt from mixer to extruder or gear pump and extrusion of melt in order to move it from extruder or gear pump through granulation disc spinnerets, in which polymer flow is divided into separate flows, with their cutting to obtain granules of homogeneous polymodal polyolefin composition.

EFFECT: technical result consists in achievement of high level of homogeneity and preservation of physical properties of polymer melt.

15 cl, 3 dwg, 4 ex, 3 tbl