| (19) |
 |
|
(11) |
EP 0 348 183 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
29.05.1991 Bulletin 1991/22 |
| (43) |
Date of publication A2: |
|
27.12.1989 Bulletin 1989/52 |
| (22) |
Date of filing: 22.06.1989 |
|
| (51) |
International Patent Classification (IPC)4: C11D 3/386 |
|
| (84) |
Designated Contracting States: |
|
CH DE ES FR GB IT LI NL SE |
| (30) |
Priority: |
23.06.1988 US 210474
|
| (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: |
|
- Linard, Jack Edward
Bebington
Wirral
Merseyside L63 9FL (GB)
- Fox, Daniel J.
New Jersey 07506 (US)
|
| (74) |
Representative: Kan, Jacob Hendrik, Dr. et al |
|
Unilever N.V.
Patent Division
P.O. Box 137
NL-3130 AC Vlaardingen
NL-3130 AC Vlaardingen (NL) |
|
| |
|
| (54) |
Enzyme-containing liquid detergents |
(57) A heavy duty, enzyme-containing, aqueous liquid detergent. The detergent includes
surfactants, enzymes and an enzyme-stabilizing system. The detergent has a neat liquid
pH of 9.5 or greater, a solution pH of 8.5 or greater at 0.2% weight use level and
a titratable alkalinity of at least 0.5% weight per gram of product when expressed
as % Na₂O as measured to pH 7.