(19) |
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(11) |
EP 0 486 113 A3 |
(12) |
EUROPEAN PATENT APPLICATION |
(88) |
Date of publication A3: |
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08.07.1992 Bulletin 1992/28 |
(43) |
Date of publication A2: |
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20.05.1992 Bulletin 1992/21 |
(22) |
Date of filing: 14.11.1991 |
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(84) |
Designated Contracting States: |
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BE CH DE DK ES FR GB GR LI LU NL SE |
(30) |
Priority: |
16.11.1990 NL 9002507
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(71) |
Applicant: Akzo Nobel N.V. |
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NL-6824 BM Arnhem (NL) |
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(72) |
Inventors: |
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- Frank, Albert
W-5000 Köln 41 (DE)
- Güth, Werner
W-5163 Langerwehe-Schlich (DE)
- Krüger, Götz
W-5100 Aachen (DE)
- Rörig, Hans
W-5161 Merzenich (DE)
|
(74) |
Representative: Schalkwijk, Pieter Cornelis |
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AKZO NOBEL N.V.
Patent Department (Dept. CO)
P.O. Box 9300 NL-6800 SB Arnhem NL-6800 SB Arnhem (NL) |
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(54) |
Biodegradable fabric softeners derived from aspartic acid or glutaminic acid |
(57) Stable aqueous dispersions are described which display a fabric softening action
and contain a biodegradable cationic nitrogen compound. The anion of the compound
is the anion of a water-soluble organic Bronstedt acid. The acid is present in an
amount more than equivalent to the amount of the nitrogen compound. The cationic nitrogen
is obtained from an amine which is prepared from an unsaturated dicarboxylic ester
e.g. ditallow maleate and an amine e.g. dimethyl amine.