| (19) |
 |
|
(11) |
EP 0 417 987 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
14.08.1991 Bulletin 1991/33 |
| (43) |
Date of publication A2: |
|
20.03.1991 Bulletin 1991/12 |
| (22) |
Date of filing: 07.09.1990 |
|
|
| (84) |
Designated Contracting States: |
|
CH DE ES FR GB IT LI NL SE |
| (30) |
Priority: |
11.09.1989 GB 8920468
|
| (71) |
Applicants: |
|
- UNILEVER PLC
London EC4P 4BQ (GB)
GB
- UNILEVER N.V.
NL-3013 AL Rotterdam (NL)
CH DE ES FR IT LI NL SE
|
|
| (72) |
Inventor: |
|
- Evans, Huw,
Unilever Research Port Sunlight Lab.
Wirral,
Merseyside L63 3JW (GB)
|
| (74) |
Representative: Fransella, Mary Evelyn et al |
|
Unilever PLC
Patent Division
Colworth House
Sharnbrook
Bedford MK44 1LQ
Bedford MK44 1LQ (GB) |
|
| |
|
(57) A fabric softening composition comprising one or more amine softening materials and
one or more pH adjusting agents, wherein the pH of an aqueous liquor obtained by diluting
said fabric softening composition to a concentration of 200 ppm of the amine materials
has a pH which is equal to or below the pK
a of the amine materials. Preferably the composition is a liquid satisfying the following
condition:
1.5 < pK
a (pH adjuster) < pK
a (amine)