Title:
DRYING OF POWDER
Document Type and Number:
Japanese Patent JPS5620981
Kind Code:
A
Abstract:
The halogen and organic substances content of the catalyst residues in alpha-olefin crystalline (co)-polymers prepared with catalysts obtained by reacting: (a) a metallorganic Al compound with (b) a Ti compound supported on a Mg halide, in which an electron-donor is combined with the Ti compound and/or the Mg compound and optionally with (a), are reduced by passing a stream of superheated steam (optionally mixed with other gaseous fluids) over the polymer in powder form at a temperature of 105 DEG -140 DEG C. and under a pressure of 0.1-10 kg/cm2 gauge, the steam/polymer ratio being comprised between 0.10 and 1 by weight.
Inventors:
JIYOBANNI DEI DORUSUKO
ROBERUTO RINARUDEI
GABURIERE GOBONI
ROBERUTO RINARUDEI
GABURIERE GOBONI
Application Number:
JP8929080A
Publication Date:
February 27, 1981
Filing Date:
July 02, 1980
Export Citation:
Assignee:
MONTEDISON SPA
International Classes:
C08F6/02; F26B3/16; F26B3/06; (IPC1-7): F26B3/02; F26B3/06
Domestic Patent References:
| JPS543258A | 1979-01-11 |