| (19) |
 |
|
(11) |
EP 0 318 219 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
06.06.1990 Bulletin 1990/23 |
| (43) |
Date of publication A2: |
|
31.05.1989 Bulletin 1989/22 |
| (22) |
Date of filing: 21.11.1988 |
|
| (51) |
International Patent Classification (IPC)4: C11D 3/12 |
|
| (84) |
Designated Contracting States: |
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AT BE CH DE ES FR GB GR IT LI NL SE |
| (30) |
Priority: |
24.11.1987 GB 8727505
|
| (71) |
Applicants: |
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- UNILEVER PLC
London EC4P 4BQ (GB)
GB
- UNILEVER N.V.
3013 AL Rotterdam (NL)
BE CH DE ES FR GR IT LI NL SE AT
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|
| (72) |
Inventors: |
|
- Garvey, Michael Joseph
Heswall
Wirral L60 1XU (GB)
- Griffiths, Ian Charles
Wirral
Merseyside L63 3HF (GB)
|
| (74) |
Representative: Roscoe, Brian Corrie et al |
|
UNILEVER PLC
Patents Division
Colworth House
Sharnbrook
Bedford MK44 1LQ
Bedford MK44 1LQ (GB) |
|
| |
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(57) Sodium aluminosilicate in the zeolite or amorphous forms is of value as a detergency
builder. This material must frequently be handled and transported in the form of a
suspension. A stabilising amount of a water soluble cationic surfactant containing
one long chain (C12 to C18) substantially saturated hydrocarbon group allows a pumpable
stable aqueous suspension to be prepared.