| (19) |
 |
|
(11) |
EP 0 463 801 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
24.06.1992 Bulletin 1992/26 |
| (43) |
Date of publication A2: |
|
02.01.1992 Bulletin 1992/01 |
| (22) |
Date of filing: 20.06.1991 |
|
|
| (84) |
Designated Contracting States: |
|
AT BE CH DE DK ES FR GR IT LI NL SE |
| (30) |
Priority: |
22.06.1990 US 542228
|
| (71) |
Applicant: The Clorox Company |
|
Oakland
California 94612 (US) |
|
| (72) |
Inventor: |
|
- Kong, Stephen B.
Alameda,
California 94501 (US)
|
| (74) |
Representative: Froud, Clive et al |
|
Elkington and Fife
Prospect House
8 Pembroke Road
Sevenoaks, Kent TN13 1XR
Sevenoaks, Kent TN13 1XR (GB) |
|
| |
|
| (54) |
Composition and method for fabric encrustation prevention |
(57) Cleaning composition and method comprising in a first embodiment an alkali metal
carbonate builder and a fabric encrustation prevention system comprising a sub-stoichiometric
level of a polyamino polycarboxylic acid or water-soluble salts thereof which acts
to inhibit and prevent the deposition of insoluble precipitates containing water hardness
ions on fabrics; in a second embodiment the cleaning composition includes a detersive
surfactant for laundry applications; in either embodiment the following adjuncts may
be included: co-builders, alkali metal silicates, bleaching species, enzymes, fragrances,
dyes, brighteners and others.