Global Patent Index - EP 1102722 A1

EP 1102722 A1 2001-05-30 - METHOD FOR DISPERSING INSOLUBLE MINERAL SEDIMENTS AND ADDITIVES FOR CARRYING OUT THIS METHOD

Title (en)

METHOD FOR DISPERSING INSOLUBLE MINERAL SEDIMENTS AND ADDITIVES FOR CARRYING OUT THIS METHOD

Title (de)

VERFAHREN ZUM DISPERGIEREN VON UNLÖSLICHEN MINERALISCHEN SEDIMENTEN SOWIE ADDITIVE ZUR DURCHFÜHRUNG DES VERFAHRENS

Title (fr)

PROCEDE DE DISPERSION DE SEDIMENTS MINERAUX INSOLUBLES ET ADDITIFS DESTINES A LA MISE EN OEUVRE DE CE PROCEDE

Publication

EP 1102722 A1 (DE)

Application

EP 00938734 A

Priority

  • DE 29909819 U
  • DE 29912836 U
  • EP 0005062 W

Abstract (en)

[origin: WO0075079A1] The invention relates to a method for dispersing insoluble mineral sediments, i.e. clays, in a liquid containing mainly water, and to additives for carrying out the method. The mineral sediment in a pulverised form is homogeneously mixed with a mixture of a crystalline acidifying agent and a substance that releases gas when reacted with the dissolved acidifying agent, and added to the water. The subsequent development of gas bubbles as the acidifying agent reacts with the gas-releasing substance causes the pulverulent mineral sediment to disperse.

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

C02F 1/28; A61K 9/00

IPC 8 full level (invention and additional information)

A61K 8/19 (2006.01); A61K 8/25 (2006.01); A61K 8/365 (2006.01); A61K 9/20 (2006.01); A61K 9/46 (2006.01); A61K 33/06 (2006.01); A61Q 19/10 (2006.01); C02F 1/52 (2006.01); C02F 1/54 (2006.01); C02F 1/68 (2006.01)

CPC (invention and additional information)

A61K 33/06 (2013.01); A61K 8/19 (2013.01); A61K 8/25 (2013.01); A61K 8/365 (2013.01); A61K 9/0007 (2013.01); A61K 9/2009 (2013.01); A61Q 19/10 (2013.01); C02F 1/5236 (2013.01); C02F 1/54 (2013.01); C02F 1/68 (2013.01); Y02W 10/37 (2015.05)

Citation (search report)

See references of WO 0075079A1

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 0075079 A1 20001214; AU 5400500 A 20001228; EP 1102722 A1 20010530

INPADOC legal status


2004-09-22 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20040316

2003-10-22 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20030903

2001-08-01 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20010606

2001-05-30 [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

2001-05-30 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

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