| (19) |
 |
|
(11) |
EP 0 677 576 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
05.11.1997 Bulletin 1997/45 |
| (43) |
Date of publication A2: |
|
18.10.1995 Bulletin 1995/42 |
| (22) |
Date of filing: 29.03.1995 |
|
| (51) |
International Patent Classification (IPC)6: C11D 3/39 |
|
| (84) |
Designated Contracting States: |
|
AT BE CH DE DK ES FR GB GR IE IT LI NL PT SE |
| (30) |
Priority: |
13.04.1994 US 226929
|
| (71) |
Applicant: THE PROCTER & GAMBLE COMPANY |
|
Cincinnati,
Ohio 45202 (US) |
|
| (72) |
Inventors: |
|
- Taylor, Lucille Florence
Middletown,
Ohio 45044 (US)
- Willey, Alan David
Cincinatti,
Ohio 45202 (US)
- Burns, Michael Eugene
West Chester,
Ohio 45069 (US)
|
| (74) |
Representative: Gibson, Tony Nicholas et al |
|
Procter & Gamble Limited,
Whitley Road
Longbenton,
Newcastle upon Tyne NE12 9TS
Longbenton,
Newcastle upon Tyne NE12 9TS (GB) |
|
| |
|
| (54) |
Automatic dishwashing composition containing bleach activators |
(57) Automatic dishwashing detergent compositions comprising a peroxygen bleaching compound
and a bleach activator are disclosed. The bleach activators are selected from the
group consisting of benzoyloxybenzenesulphonate (BOBS), benzoylcaprolactam (BZCL),
benzoylvalerolactam (BZVL), nonanoyloxybenzenesulphonate (NOBS), derivatives and mixtures
thereof. Preferred compositions are granular, are substantially phosphate free and
contain detersive enzymes. The compositions are effective in removing tea stains under
various temperature and pH conditions.