公开(公告)号：DE2524474A1

公开(公告)日：1976-12-23

申请号：DE2524474

申请日：1975-06-03

Applicant: BASF AG

Inventor： BUECHNER OSKAR DIPL CHEM DR ,  SCHLICHTHAERLE GOTTFRIED DIPL ,  URBAN FRIEDRICH DIPL CHEM DR

IPC: C08F6/00 ,  C08F2/00 ,  C08F6/06 ,  C08F10/02 ,  C08F110/02

公开(公告)号：DE2524203A1

公开(公告)日：1976-12-16

申请号：DE2524203

申请日：1975-05-31

Applicant: BASF AG

Inventor： MIETZNER FRANZ GEORG DIPL CHEM ,  BUECHNER OSKAR DIPL CHEM DR ,  STEIGERWALD KLAUS DIPL CHEM DR ,  SCHLICHTHAERLE GOTTFRIED DIPL ,  URBAN FRIEDRICH DIPL CHEM DR

IPC: C08F6/00 ,  C08F2/00 ,  C08F6/06 ,  C08F10/02 ,  C08F110/02

Abstract: A process for the manufacture of ethylene polymers by homopolymerization and copolymerization of ethylene at pressures of from 500 to 5,000 bars and at from 50 DEG to 450 DEG C, with subsequent isolation of the polymers in high pressure product isolation zones and low pressure product isolation zones. The various parallel product isolation zones are at different temperatures, and the mean product residence times in the zones may be identical or different. Very different products, in amounts which can be chosen according to requirements, and with mutually independent polymer properties, can be obtained using only one high pressure polymerization system.

公开(公告)号：DE2524204A1

公开(公告)日：1976-12-16

申请号：DE2524204

申请日：1975-05-31

Applicant: BASF AG

Inventor： BUECHNER OSKAR DIPL CHEM DR ,  SCHLICHTHAERLE GOTTFRIED DIPL ,  URBAN FRIEDRICH DIPL CHEM DR

IPC: C08F6/00 ,  C08F2/00 ,  C08F6/06 ,  C08F10/02 ,  C08F110/02

Abstract: A process for the manufacture of ethylene polymers by high pressure polymerization of ethylene, if desired mixed with other compounds copolymerizable with ethylene, and isolation of the reaction product in a multi-stage isolation zone. The molecular weight of the ethylene polymer can be varied by varying the mean product residence time in the isolation zone. The isolation zone preferably consists of two stages, with a higher pressure prevailing in the first stage than in the second stage.