Global Patent Index - EP 0843714 A4

EP 0843714 A4 2000-01-05 - LAUNDRY WASHING METHOD

Title (en)

LAUNDRY WASHING METHOD

Title (de)

VERFAHREN ZUM WÄSCHEWASHEN.

Title (fr)

PROCEDE POUR LAVER DU LINGE

Publication

EP 0843714 A4 (EN)

Application

EP 96923641 A

Priority

  • GB 9513991 A
  • US 9611282 W

Abstract (en)

[origin: GB2303150A] There is provided a method of washing soiled laundry in a domestic or industrial washing machine wherein a delivery means is provided for dispensing an effective amount of a detergent composition directly to the drum of a washing machine before the commencement of the wash and subsequently enabling release of said detergent composition to the wash liquid during the wash. Said detergent composition contains a cationic ester surfactant and an alkalinity system comprising alkaline salts. The delivery means enables the delivery of said cationic ester surfactant to said soiled laundry prior to the establishment of an alkaline wash liquor environment around the soiled laundry. A washing method including a pretreatment step is also provided. With this arrangement the solution stability of the cationic ester surfactant is not reduced and thus its stain removal performance is enhanced.

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

C11D 1/62; C11D 3/10; C11D 17/04

IPC 8 full level (invention and additional information)

C11D 1/62 (2006.01); C11D 17/00 (2006.01); D06F 39/02 (2006.01); C11D 17/04 (2006.01)

CPC (invention and additional information)

C11D 17/046 (2013.01); C11D 1/62 (2013.01); C11D 17/0078 (2013.01); D06F 39/02 (2013.01)

Citation (search report)

Designated contracting state (EPC)

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

EPO simple patent family

GB 2303150 A 19970212; GB 9513991 D0 19950906; BR 9609600 A 19990504; CA 2226637 A1 19970130; EP 0843714 A1 19980527; EP 0843714 A4 20000105; MX 9800274 A 19980430; WO 9703161 A1 19970130; WO 9703161 A9 19990624

INPADOC legal status


2001-08-08 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20010201

2000-01-05 [A4] SUPPLEMENTARY SEARCH REPORT

- Ref Legal Event Code: A4

- Effective date: 19991123

2000-01-05 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

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

2000-01-05 [RIC1] CLASSIFICATION (CORRECTION)

- Ref Legal Event Code: RIC1

- Free Format Text: 7C 11D 1/62 A, 7C 11D 17/04 B, 7C 11D 3/10 B

1998-05-27 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 19980107

1998-05-27 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

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