Global Patent Index - EP 0989906 A1

EP 0989906 A1 2000-04-05 - SURFACTANT COMPOSITIONS

Title (en)

SURFACTANT COMPOSITIONS

Title (de)

OBERFLÄCHENAKTIVE ZUSAMMENSETZUNGEN

Title (fr)

COMPOSITIONS DE TENSIOACTIFS

Publication

EP 0989906 A1 (EN)

Application

EP 98930875 A

Priority

  • GB 9801767 W
  • GB 9712981 A

Abstract (en)

[origin: WO9857735A1] It has been found that block copolymer surfactants can be stabilized by the presence of small quantities of certain metal ions and/or a polyalkyleneglycol. The metal ions afford block copolymer surfactant stability at very low concentration of metal ion and safety advantages over conventional stabilizing techniques. The present invention is all the more surprising in view of the prior art which clearly indicates that metal ions would be expected to accelerate autoxidative degradation.

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

B01F 17/00

IPC 8 full level (invention and additional information)

A61K 47/30 (2006.01); B01F 17/00 (2006.01); B01F 17/42 (2006.01); B01F 17/52 (2006.01)

CPC (invention and additional information)

B01F 17/0028 (2013.01)

Citation (search report)

See references of WO 9857735A1

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

WO 9857735 A1 19981223; AU 8116398 A 19990104; EP 0989906 A1 20000405; GB 9712981 D0 19970827; JP 2002507932 A 20020312

INPADOC legal status


2001-04-25 [18W] WITHDRAWN

- Ref Legal Event Code: 18W

- Date of withdrawal: 20010228

2000-10-11 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: NYCOMED IMAGING AS

- Ref Legal Event Code: RAP1

2000-04-05 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 19991025

2000-04-05 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE