EP 1090044 A1 20010411 - METHOD FOR POLYMERISING AND COPOLYMERISING ETHYLENE

Title (en)

METHOD FOR POLYMERISING AND COPOLYMERISING ETHYLENE

Title (de)

VERFAHREN ZUR POLYMERISATION UND COPOLYMERISATION VON ETHYLEN

Title (fr)

PROCEDE DE POLYMERISATION ET DE COPOLYMERISATION D'ETHYLENE

Publication

EP 1090044 A1 20010411 (DE)

Application

EP 99917973 A 19990412

Priority

DE 19818216 A 19980424
EP 9902450 W 19990412

Abstract (en)

[origin: DE19818216A1] A process for the polymerization of ethylene, optionally with vinyl unsaturated monomers is carried out in the presence of 0.01-2.0 wt.% of a non-polymerizable carboxylic acid. A process for the polymerization of ethylene or copolymerization of ethylene with vinylic unsaturated comonomers at 110-350 deg C and 1000-4000 bar in the presence of peroxide polymerization inhibitors is claimed. A non-polymerizable carboxylic acid is added at 0.01-2.0 wt.% (with respect to) the total amount of ethylene in the polymerization mixture) to control the decomposition rate of the peroxide initiator.

IPC 1-7

C08F 4/34; C08F 10/02; C08F 218/08; C08F 220/02

IPC 8 full level

C08F 2/38 (2006.01); C08F 4/34 (2006.01); C08F 10/02 (2006.01); C08F 210/02 (2006.01); C08F 2/00 (2006.01); C08F 218/08 (2006.01); C08F 220/02 (2006.01)

CPC (source: EP KR)

C08F 110/02 (2013.01 - KR); C08F 210/02 (2013.01 - EP KR)

C-Set (source: EP)

Designated contracting state (EPC)

AT BE DE ES FR GB IT NL

DOCDB simple family (publication)

WO 9955738 A1 19991104; BR 9909845 A 20001219; CN 1298414 A 20010606; DE 19818216 A1 19991028; EP 1090044 A1 20010411; HU P0101834 A2 20010928; HU P0101834 A3 20020528; JP 2002513048 A 20020508; KR 20010034822 A 20010425

DOCDB simple family (application)

EP 9902450 W 19990412; BR 9909845 A 19990412; CN 99805437 A 19990412; DE 19818216 A 19980424; EP 99917973 A 19990412; HU P0101834 A 19990412; JP 2000545896 A 19990412; KR 20007011751 A 20001023