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Properties of our IK-8-21 MTC samples

Properties of our IK-8-21 MTC samples

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Article
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The effect of the particle size of an IK-8-21 domestic titanium-magnesium catalyst on the properties of polypropylene (PP) produced during the polymerization of propylene in a liquid monomer is studied. Catalysts with particle sizes of 20 to 64 μm are shown to have high activity and identical sensitivity to hydrogen and allow PP to be obtained with...

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... particle size of the PP powder was determined from the particle size distribution using an Octagon Digital sieve machine according to ASTM D 1921, while the bulk density of the PP powder was measured according to GOST (State Standard) 11035.1-93. The melting temperature and crystallinity were measured Table 1 contains data on the composition and particle sizes of IK-8-21 MTC samples studied during the polymerization of propylene in liqud monomer. The amounts of titanium, magnesium, and dibuthyl phthalate were 2.2-2.5, 17.7-19.2, ...

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... Although there is a tendency to use non-phthalate TMCs (1,3-diethers, succinates, etc.), most of the global PP production still involves polymerization with TMCs that contain phthalates (such as dibuthyl phthalate (DBP) or diisobutyl phthalate (DIBP)) as D 1 and alkoxysilanes as D 2 [6,7]. ...
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