Polish version

Login form

register


Print

Yu. A. Gavrilov, G. A. Koroleva, L. A. Novokshonova


Specific features of gas-phase propylene polymerization


Polimery 1989, No 6-7, 289



DOI: dx.doi.org/10.14314/polimery.1989.289


Summary

Kinetics of gas-phase propylene polymerization in the presence of a catalytic system composed of TiCl3 (TAC-101) — AlEt2Cl and superactive microspherical TiCl3 (Solvay-type) has been investigated in the pressure range of 20 mm Hg — 6 atm (2.6—589 kPa) and in the temperature range of 25—70°C. The course of the dependence of the reduced rate of polymerization of propylene in gas-phase on monomer concentration and temperature has been compared with the course of the corresponding dependencies for the suspension and mass polymerization of this monomer. Gas-phase polymerization is characterized by a higher value of reduced rate than the two remaining variants of the process. Gas-phase polymerized polypropylene with the TAC-101 — AlEt2Cl system had the following properties: isotacticity index — 92%, degree of crystallinity — 80%, and molecular mass — 38·103.


If you are interested in full versions of articles, please contact the editorial team of polimery@ichp.pl