| (19) |
 |
|
(11) |
EP 0 353 973 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
17.10.1990 Bulletin 1990/42 |
| (43) |
Date of publication A2: |
|
07.02.1990 Bulletin 1990/06 |
| (22) |
Date of filing: 31.07.1989 |
|
|
| (84) |
Designated Contracting States: |
|
AT BE CH DE ES FR GB GR IT LI LU NL SE |
| (30) |
Priority: |
30.07.1988 GB 8818215
|
| (71) |
Applicant: ICN BIOMEDICALS LIMITED |
|
Irvine
Ayrshire
Scotland KA12 8NB (GB) |
|
| (72) |
Inventor: |
|
- Perkins,Peter G.,Prof.
Glasgow,Scotland G63 07J (GB)
|
| (74) |
Representative: Murgitroyd, Ian G. et al |
|
Murgitroyd and Company
373 Scotland Street
Glasgow G5 8QA
Glasgow G5 8QA (GB) |
|
| |
|
| (54) |
Phosphate-free detergents |
(57) Phosphate-free detergents, particularly for laboratory cleaning, based on sodium
salts of methylene-phosphonic acids as sequestrants, preferred active ingredients
being pentasodium salt of ethylenediaminetetra (methylenephosphonic) acid and/or heptasodium
salt of diethylenetriaminepenta(methylenephosphonic) acid.