| (19) |
 |
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(11) |
EP 0 241 779 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
12.10.1988 Bulletin 1988/41 |
| (43) |
Date of publication A2: |
|
21.10.1987 Bulletin 1987/43 |
| (22) |
Date of filing: 26.03.1987 |
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| (84) |
Designated Contracting States: |
|
AT BE CH DE ES FR GB GR IT LI LU NL SE |
| (30) |
Priority: |
16.04.1986 IT 2010686
|
| (71) |
Applicant: CAMPI Centro Applicazione Moderni Prodotti Industriali Srl |
|
() |
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| |
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| (54) |
Acid composition for washing the exterior of railway carriages and the like |
(57) A composition for washing the exterior of railway carriages and the like consisting
of an aqueous dispersion containing pectin as the thickening agent, and possibly xanthan
gum and sorbitol, and having acid pH due to the presence of one or more mineral or
organic acids chosen from the group of acids able to dissolve iron oxide.
Said composition is prepared by firstly mixing the pectin and if present the xanthan
gum and sorbitol with water at 60-85°C, and then adding the acid or acids at 35-40°C.
The composition obtained has advantages of applicational and ecological character.