Method for drying vapor phase reaction system

In the polymerization of olefins using a catalyst comprising an organoaluminum compound and solid catalyst components containing titanium and/or vanadium; and magnesium in a vapor phase fluidized bed, the formation of sheet-like polymer and other abnormal conditions in the initial stage of the polym...

Full description

Saved in:
Bibliographic Details
Main Authors NIWA; MASAHIRO, YOSHIKAWA; MAMORU, YAMAGUCHI; YOSHIHISA, SUGA; SHINJIRO
Format Patent
LanguageEnglish
Published 30.07.1996
Edition6
Subjects
CHEMISTRY
COMPOSITIONS BASED THEREON
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
Online AccessGet full text

Cover

More Information
Summary:In the polymerization of olefins using a catalyst comprising an organoaluminum compound and solid catalyst components containing titanium and/or vanadium; and magnesium in a vapor phase fluidized bed, the formation of sheet-like polymer and other abnormal conditions in the initial stage of the polymerization are avoided by means of previous drying of the reactor by feeding an organoaluminum compound prior to the feeding of seed polymer, the quantity of said organoaluminum compound being calculated by the following equation (I): A=kxV+E,fra 2/3+EE (I)wherein A is the feed quantity (mol) of the organoaluminum compound, k is a coefficient (mol/m2) in the range from 0.15 to 4, and V is the volume (m3) of the whole system including gas circulation pipings.
Bibliography:Application Number: US19930174270