| (19) |
 |
|
(11) |
EP 0 462 829 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
07.07.1993 Bulletin 1993/27 |
| (43) |
Date of publication A2: |
|
27.12.1991 Bulletin 1991/52 |
| (22) |
Date of filing: 19.06.1991 |
|
| (51) |
International Patent Classification (IPC)5: C11D 3/37 |
|
| (84) |
Designated Contracting States: |
|
AT BE CH DE DK ES FR GB GR IT LI LU NL SE |
| (30) |
Priority: |
20.06.1990 US 541239
|
| (71) |
Applicant: ROHM AND HAAS COMPANY |
|
Philadelphia
Pennsylvania 19105 (US) |
|
| (72) |
Inventors: |
|
- Jones, Charles Elwood
Yardley, PA 19067 (US)
- Lein, George Max
Chalfont PA 18914 (US)
- Keenan, Andrea Claudette
Plymouth Meeting PA 19462 (US)
|
| (74) |
Representative: Tanner, James Percival et al |
|
ROHM AND HAAS (UK) LTD.
European Operations Patent Department
Lennig House
2 Mason's Avenue
Croydon CR9 3NB
Croydon CR9 3NB (GB) |
|
| |
|
| (54) |
Machine dishwashing detergent composition |
(57) The present invention is concerned with chlorine-free machine dishwashing detergent
compositions which provide cleaning as effective as conventional chlorine-containing
machine dishwashing compositions. The dishwashing detergent compositions comprise
copolymer, or water-soluble salt thereof, containing, as polymerized units, maleic
acid, maleic anhydride, or salt thereof, and a copolymerizable hydrophobic compound
containing at least 4 carbon atoms.