| (19) |
 |
|
(11) |
EP 0 425 277 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
24.07.1991 Bulletin 1991/30 |
| (43) |
Date of publication A2: |
|
02.05.1991 Bulletin 1991/18 |
| (22) |
Date of filing: 24.10.1990 |
|
|
| (84) |
Designated Contracting States: |
|
CH DE ES FR GB IT LI NL SE |
| (30) |
Priority: |
27.10.1989 GB 8924294
|
| (71) |
Applicants: |
|
- UNILEVER PLC
London EC4P 4BQ (GB)
GB
- UNILEVER N.V.
NL-3013 AL Rotterdam (NL)
CH DE ES FR IT LI NL SE
|
|
| (72) |
Inventors: |
|
- Barber, Alan Dan,
Unilever Research
Wirral,
Merseyside, L63 3JW (GB)
- Emery, William Derek,
Unilever Research
Wirral,
Merseyside, L63 3JW (GB)
|
| (74) |
Representative: Geary, Stephen et al |
|
Unilever Plc,
Patent Division,
Colworth House
Sharnbrook,
Bedford MK44 1LQ
Sharnbrook,
Bedford MK44 1LQ (GB) |
|
| |
|
| (54) |
Detergent compositions |
(57) A granular detergent base composition having a bulk density of at least 650 g/litre
comprises:
an organic surfactant system consisting essentially of fatty acid soap (5-40 wt% on
composition), alkoxylated nonionic surfactant (5-35 wt% on composition) and preferably
free of nonsoap anionic surfactant;
a detergency builder system consisting essentially of alkali metal aluminosilicate
(20-60 wt% anhydrous on composition) and an organic sequestrant builder such as alkali
metal citrate (2-15 wt% on composition);
and optionally various other detergent ingredients such as sodium carbonate, sodium
silicate, sodium succinate.
The detergent base composition can be prepared by densification of a spray-dried base
powder in a high-speed mixer/granulator. It combines good detergency with a lack of
environmentally questionable ingredients, and dispenses well in a drum-type washing
machine despite the high bulk density.