Global Patent Index - EP 1257499 A1

EP 1257499 A1 2002-11-20 - SODIUM PERBORATE MONOHYDRATE PARTICLES AND THEIR MANUFACTURE

Title (en)

SODIUM PERBORATE MONOHYDRATE PARTICLES AND THEIR MANUFACTURE

Title (de)

NATRIUMPERBORATMONOHYDRAT-TEILCHEN UND DEREN HERSTELLUNG

Title (fr)

PARTICULES DE MONOHYDRATE DE PERBORATE DE SODIUM ET PROCEDE DE PRODUCTION CORRESPONDANT

Publication

EP 1257499 A1 (EN)

Application

EP 01909959 A

Priority

  • GB 0100806 W
  • GB 0004406 A

Abstract (en)

[origin: WO0162664A1] The invention relates to a method for the manufacture of sodium perborate monohydrate having a high active oxygen content and high bulk density and to sodium perborate particles which can be made using this method. The method according to the invention comprises agglomerating fine sodium perborate particles using as agglomerating agent a high concentration hydrogen peroxide solution, and subsequently drying. The product obtained has the desirable properties of commercially available sodium perborate monohydrate but also in particular a high active oxygen content and high bulk density making it suitable for use in so-called compact or super compact detergent formulations.

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

C01B 15/12; C11D 3/39

IPC 8 full level (invention and additional information)

C01B 15/12 (2006.01); C11D 3/39 (2006.01)

CPC (invention and additional information)

C11D 3/3942 (2013.01); C01B 15/12 (2013.01)

Citation (search report)

See references of WO 0162664A1

Designated contracting state (EPC)

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

EPO simple patent family

WO 0162664 A1 20010830; AU 3754501 A 20010903; EP 1257499 A1 20021120; GB 0004406 D0 20000412; GB 2359546 A 20010829

INPADOC legal status


2003-01-22 [18W] APPLICATION WITHDRAWN

- Date of withdrawal: 20021129

2002-11-20 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20020822

2002-11-20 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

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

2002-11-20 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

- Free text: AL;LT;LV;MK;RO;SI