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US 4,767,547 AGranted
Biodegradable fabric softeners
AssigneeThe Procter & Gamble Company
InventorsTheodericus J. Straathof, Axel Konig
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Abstract
Fabric softening compositions which are rapidly biodegradable and particularly shelf stable are disclosed. These compositions contain a specific quaternary ammonium, and are formulated in a narrowly defined pH range.
Claims12
An aqueous fabric softening composition with excellent hydrolytic stability on storage, containing a rapidly biodegradable quaternary ammonium softening agent of the formula:
- ##STR8## R.sub.1 is (CH.sub.2).sub.n --Q--T.sub.2 or T.sub.3 ;
- R.sub.2 is (CH.sub.2).sub.n --Q--T.sub.4 or T.sub.5 or R.sub.3 ;
- R.sub.3 is C.sub.1 -C.sub.4 alkyl;
- T.sub.1, T.sub.2, T.sub.3, T.sub.4, T.sub.5 are (the same or different) C.sub.12 -C.sub.22 alkyl or alkenyl;
- n is an integer from 1 to 4;
- and
- X.sup..crclbar. is a softener-compatible anion, the composition having a pH, at 20.degree. C., of from 2.5 to 4.2 upon dilution, in de-ionized water, to a concentration of 0.5% to 1% of said rapidly biodegradable quaternary ammonium.
4 more elements
Dependencies are inferred from the claim text.