| (19) |
 |
|
(11) |
EP 0 295 739 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
17.01.1990 Bulletin 1990/03 |
| (43) |
Date of publication A2: |
|
21.12.1988 Bulletin 1988/51 |
| (22) |
Date of filing: 06.06.1988 |
|
| (51) |
International Patent Classification (IPC)4: C11D 1/62 |
|
| (84) |
Designated Contracting States: |
|
AT BE CH DE ES FR GB GR IT LI LU NL SE |
| (30) |
Priority: |
09.06.1987 US 59887
|
| (71) |
Applicant: THE PROCTER & GAMBLE COMPANY |
|
Cincinnati,
Ohio 45202 (US) |
|
| (72) |
Inventors: |
|
- Chang, Nienyuan James
Cincinnati
OH 45219 (US)
- Walley, Darlene Rose
Cincinnati, OH 45220 (US)
|
| (74) |
Representative: Canonici, Jean-Jacques et al |
|
Procter & Gamble European Technical Center N.V.
Temselaan 100
1853 Strombeek-Bever
1853 Strombeek-Bever (BE) |
|
| |
|
| (54) |
Method for preparing biodegradable fabric treatment compositions |
(57) Disclosed is a method for preparing fabric softening compositions containing mono-ester
analogs of ditallow dimethyl ammonium chloride. When formulated using the disclosed
procedure, including the use of narrowly- defined pH and temperature ranges, the resulting
compositions are both biodegradable and storage stable.