Global Patent Index - EP 1056791 A1

EP 1056791 A1 2000-12-06 - METHOD FOR THE PRODUCTION OF POLYDIENES WITH REGULATED MOONEY VISCOSITY

Title (en)

METHOD FOR THE PRODUCTION OF POLYDIENES WITH REGULATED MOONEY VISCOSITY

Title (de)

VERFAHREN ZUR HERSTELLUNG VON POLYDIENEN MIT GEREGELTER MOONEY-VISKOSITÄT

Title (fr)

PROCEDE DE FABRICATION DE POLYDIENES A VISCOSITE MOONEY REGLEE

Publication

EP 1056791 A1 (DE)

Application

EP 99908857 A

Priority

  • DE 19806931 A
  • EP 9900803 W

Abstract (en)

[origin: DE19806931A1] A process for the production of polydienes with controlled Mooney viscosity comprises the gas-phase polymerisation of conjugated dienes with rare earth-based catalysts in presence of 0.005-80 wt.% 1,2-diene (based on total diene).

IPC 1-7 (main, further and additional classification)

C08F 36/04; C08F 2/38; C08F 4/54

IPC 8 full level (invention and additional information)

C08F 2/38 (2006.01); C08F 4/12 (2006.01); C08F 4/54 (2006.01); C08F 36/04 (2006.01)

CPC (invention and additional information)

C08F 36/04 (2013.01); Y10S 526/901 (2013.01); Y10S 526/903 (2013.01)

Combination set (CPC)

  1. C08F 36/04 + C08F 4/545
  2. C08F 36/04 + C08F 2/38

Citation (search report)

See references of WO 9942503A1

Designated contracting state (EPC)

DE FR GB IT

EPO simple patent family

DE 19806931 A1 19990826; AU 2832199 A 19990906; CA 2320886 A1 19990826; EP 1056791 A1 20001206; JP 2002504574 A 20020212; US 6344527 B1 20020205; WO 9942503 A1 19990826

INPADOC legal status


2003-11-12 [18W] WITHDRAWN

- Effective date: 20030917

2003-01-15 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20021129

2000-12-06 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000919

2000-12-06 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE FR GB IT