| (19) |
 |
|
(11) |
EP 0 317 307 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
17.10.1990 Bulletin 1990/42 |
| (43) |
Date of publication A2: |
|
24.05.1989 Bulletin 1989/21 |
| (22) |
Date of filing: 17.11.1988 |
|
| (51) |
International Patent Classification (IPC)4: C11D 3/386 |
|
| (84) |
Designated Contracting States: |
|
CH DE ES FR GB IT LI NL SE |
| (30) |
Priority: |
18.11.1987 GB 8726999
|
| (71) |
Applicants: |
|
- UNILEVER PLC
London EC4P 4BQ (GB)
GB
- UNILEVER N.V.
3013 AL Rotterdam (NL)
CH DE ES FR IT LI NL SE
|
|
| (72) |
Inventors: |
|
- Casteleijn, Eric
NL-2907 CG Capelle a/d Ijssel (NL)
- Dobbe, Fredericus Cornelis Pancratius Maria
NL-2342 AR Oegstgeest (NL)
|
| (74) |
Representative: Stancliffe, Terence Christopher et al |
|
UNILEVER PLC
Patent Division
Colworth House
Sharnbrook
GB-Bedford MK44 1LQ
GB-Bedford MK44 1LQ (GB) |
|
| |
|
| (54) |
Enzymatic liquid detergent composition |
(57) A liquid detergent composition comprises a surfactant concentrate and a proteolytic
enzyme derived from a microorganism: for improved storage stability in the liquid
state the proteolytic enzyme is of the proteinase K type. Proteinase K is a known
fungal alkaline serine protease from Tritirachium album Limber, and its use in liquid
detergent compositions can provide enzymatic liquid detergent with improved enzyme
storage stability in comparison with other proteolytic enzymes, thus reducing the
amount of enzyme stabilisers usually required for proteolytic enzymes in liquid detergent
compositions. Proteinase K also has improved performance in compositions with an increased
ionic strength or molarity.