公开(公告)号：DE1495107A1

公开(公告)日：1969-03-27

申请号：DE1495107

申请日：1962-08-29

Applicant: BASF AG

Inventor： KLAUS KINKEL DR ,  HELMUT PFANNMUELLER DR ,  PETER RODER DR ,  RUDI-HEINZ ROTZOLL DR ,  MANFRED TITTEL DR ,  FRIEDRICH URBAN DR ,  WIELAND ZACHER DR

IPC: C08F10/00 ,  C08F110/02 ,  C08F3/04

Abstract: Polyethylene of density 0.91 to 0.94 is produced by polymerization of ethylene at 150 DEG to 300 DEG C. and 1500 to 3000 atmospheres in a tubular reactor with oxygen as catalyst and in the presence of a chain transfer agent, wherein the reaction mixture is heated to 168 DEG to 174 DEG C. in the reactor and then heat is immediately extracted externally through the reactor wall by means of a coolant whose temperature does not exceed 170 DEG C., the temperature of the reaction mixture not falling below 168 DEG C. In examples, the cooling medium used is water under pressure and at 160-170 DEG C. The transfer agent may be hydrogen, a hydrocarbon, an alcohol, an ester, an acid anhydride, an aldehyde or a ketone. Sheet of good transparency may be obtained.