Patent ID: 9062184
Filing Date: 2015-06-23
Classification: C08F,C08K,C08L

Abstract:
1. A method of preparation of nucleated semi-crystalline polyolefin during coordination α-olefin polymerization, wherein a nucleating agent is treated with a surface active substance modified by reaction with an organoaluminum and dosed into a polymerization reactor as a component of a catalyst system for α-olefin polymerization in the form of a suspension in a non-polar hydrocarbon solvent or in the form of a suspension or a solution in concentrated organoaluminum, wherein an inorganic or organic nucleating agent is directly introduced into a polymerization reactor in which a polymer synthesis is subsequently carried out, and wherein a nucleation agent is an inorganic substance selected from a group consisting of talc, CaO, MgO, TiO 2 silica (SiO 2 ), alumina (Al 2 O 3 ), clay, graphite, carbon nanotubes, and combinations thereof, and wherein an organic nucleating agent is of a non-sorbitol type selected from a group of compounds of general formula (1.a-1.d): wherein: R C C C C (C branched C phenyl unsubstituted or substituted by one or more radicals selected from C phenyl-C biphenyl-(C naphthyl unsubstituted or substituted by one or more C naphthyl-C or according to the general formula (II.): wherein: k is an integer of 3 or 4; R and the three or four R or compounds of general formulae (III.a-III.c): wherein: X and X