Global Patent Index - EP 1090044 A1

EP 1090044 A1 2001-04-11 - 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 (DE)

Application

EP 99917973 A

Priority

  • DE 19818216 A
  • EP 9902450 W

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 (main, further and additional classification)

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

IPC 8 full level (invention and additional information)

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

CPC (invention and additional information)

C08F 210/02 (2013.01)

Combination set (CPC)

  1. C08F 210/02 + C08F 4/32
  2. C08F 210/02 + C08F 2/00
  3. C08F 210/02 + C08F 2/38
  4. C08F 210/02 + C08F 218/08
  5. C08F 210/02 + C08F 220/00

Citation (search report)

See references of WO 9955738A1

Designated contracting state (EPC)

AT BE DE ES FR GB IT NL

EPO simple patent family

DE 19818216 A1 19991028; BR 9909845 A 20001219; CN 1298414 A 20010606; EP 1090044 A1 20010411; HU 0101834 A2 20010928; HU 0101834 A3 20020528; JP 2002513048 A 20020508; WO 9955738 A1 19991104

INPADOC legal status


2002-07-17 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20011107

2001-08-16 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20010627

2001-04-11 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000913

2001-04-11 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE DE ES FR GB IT NL