| (19) |
 |
|
(11) |
EP 0 297 373 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
07.11.1990 Bulletin 1990/45 |
| (43) |
Date of publication A2: |
|
04.01.1989 Bulletin 1989/01 |
| (22) |
Date of filing: 18.06.1988 |
|
| (51) |
International Patent Classification (IPC)4: C11D 3/39 |
|
| (84) |
Designated Contracting States: |
|
AT BE CH DE FR GB GR IT LI NL |
| (30) |
Priority: |
25.06.1987 US 67053
|
| (71) |
Applicant: Colgate-Palmolive Company |
|
New York, N.Y. 10022-7499 (US) |
|
| (72) |
Inventors: |
|
- Massaux, Jean
Olne (BE)
- Lambert, Pierre
7, Cortil-Wodon (BE)
- Noiret, Jacques
Vivegnis (BE)
|
| (74) |
Representative: UEXKÜLL & STOLBERG |
|
Patentanwälte
Beselerstrasse 4
22607 Hamburg
22607 Hamburg (DE) |
|
| |
|
| (54) |
Granulated magnesium monoperoxyphthalate coated with fatty acid for prevention of
dye damage of bleach sensitive fabrics |
(57) A bleaching agent is described particularly effective for low temperature bleaching
of laundry while avoiding concomitant dye damage of bleach-sensitive dyed fabrics.
The bleaching agent comprises particles of monoperoxyphthalic acid (MPPA) and/or a
water-soluble salt thereof, said particles being at least partially coated with an
effective amount of a substantially aliphatic fatty acid mixture comprised of at least
about 16% and no more than about 40%, by weight, of fatty acids having a chain length
of from 20 to 22 carbon atoms, said mixture being substantially free of fatty acids
having less than 14 carbon atoms.