Global patent index - EP 1042369 A1

EP 1042369 A1 2000-10-11 - GEL-FREE PROCESS FOR MAKING FUNCTIONALIZED ANIONICALLY POLYMERIZED POLYMERS

Title (en)

GEL-FREE PROCESS FOR MAKING FUNCTIONALIZED ANIONICALLY POLYMERIZED POLYMERS

Title (de)

GELFREIE VERFAHREN FÜR DIE HERSTELLUNG VON ANIONISCH POLYMERISIERTEN POLYMEREN MIT FUNKTIONELLEN GRUPPEN

Title (fr)

PROCEDE EXEMPT DE GEL POUR LA PREPARATION DE POLYMERES FONCTIONNALISES A POLYMERISATION ANIONIQUE

Publication

EP 1042369 A1 (EN)

Application

EP 99907478 A

Priority

  • EP 9900667 W
  • US 7359298 P
  • US 7987698 P
  • US 8792098 P

Abstract (en)

[origin: WO9940121A1] The present invention relates to a process for making gel-free functionalized anionic polymers using multi-alkali metal initiators which comprises: anionically polymerizing at least one monomer with a multi-alkali metal initiator in a hydrocarbon solvent, capping the polymer by adding to the polymer a capping agent that reacts with the ends of the polymer chains such that strongly associating chain ends are formed wherein a strongly associating gel is formed, and adding a trialkyl aluminum compound to the gel. According to a further embodiment, the invention relates to a gel-free process for making functionalized anionic polymers using multi-alkali metal initiators which comprises: anionically polymerizing at least one monomer with a multi-alkali metal initiator in a hydrocarbon solvent, adding a trialkylaluminum compound before or during polymerization or before or at the same time as the capping agent, and capping the polymer by adding to the polymer a capping agent which, in the absence of the trialkylaluminum compound, would react with the polymer chain ends to form strongly associating chain ends wherein a strongly associating gel would be formed. Further aspects of the invention relate to a process for making functionalised polymer from unfunctionalised polymer; to a process for making functionalised polymer from polymers that are functionalised with a different functionality; and to a process for hydrogenating the polymers prepared by the above processes.

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

C08C 19/42; C08C 19/44; C08F 8/00; C08F 8/42

IPC 8 full level (invention and additional information)

C08C 19/42 (2006.01); C08C 19/44 (2006.01); C08F 8/00 (2006.01); C08F 8/04 (2006.01); C08F 8/42 (2006.01)

CPC (invention and additional information)

C08C 19/44 (2013.01); C08C 19/42 (2013.01); C08F 8/00 (2013.01)

Combination set (CPC)

C08F 8/00 + C08F 12/00

Citation (search report)

See references of WO 9940121A1

Designated contracting state (EPC)

BE DE ES FR GB IT NL

EPO simple patent family

WO 9940121 A1 19990812; EP 1042369 A1 20001011; JP 2002502891 A 20020129; TW 428003 B 20010401

INPADOC legal status

2005-06-01 [18W] WITHDRAWN

- Ref Legal Event Code: 18W

- Effective date: 20050405

2002-12-04 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20021022

2001-12-12 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: KRATON POLYMERS RESEARCH B.V.

- Ref Legal Event Code: RAP1

2000-10-11 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20000412

2000-10-11 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

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