Cleaning compositions for solid surfaces – auxiliary compositions – Auxiliary compositions for cleaning – or processes of preparing – Textile softening or antistatic composition
Patent
1996-03-22
1997-11-18
Lieberman, Paul
Cleaning compositions for solid surfaces, auxiliary compositions
Auxiliary compositions for cleaning, or processes of preparing
Textile softening or antistatic composition
510426, 510437, 510327, 510328, 510491, 510495, 510521, 510515, 510522, 510536, 510537, 81505, 8156, 560 1, 560 4, 560 26, 560 33, C11D 112, C11D 116, C11D 124, C11D 128
Patent
active
056887590
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to nitrogen-free anionic conditioning formulations containing sulfated polyol fatty acid esters and to the use of the sulfated polyol fatty acid esters for the production of these formulations.
2. Statement of Related Art
Cationic or pseudocationic compounds are predominantly used for softening textiles, yarns and fibers and also in the finishing of leather and in papermaking. Important representatives of this group are, for example, distearyl dimethyl ammonium chloride (DSDMAC), quaternized difatty acid alkanolamine ester salts or reaction products of fatty acids with polyamines, for example aminoethyl ethanolamine. Although these compounds have excellent conditioning properties, the biological degradability and the sensitizing potential of a number of products are not entirely satisfactory (cf. Seifen-Ole-Fette-Wachse, 117, 287 and 690 (1991)). In addition, the--admittedly more theoretical--possibility that, starting out from cationic surfactants, traces of nitrosamines could be formed in water-based formulations leads to a market need for conditioning formulations which are free from nitrogen-containing compounds.
Numerous anionic compounds which also have conditioning properties coupled with good biodegradability are in fact known from the extensive prior art on the subject of conditioners and fabric softeners. Unfortunately, the performance of hitherto known anionic conditioners is so poor that, despite their ecotoxicological advantages, they have not yet been used in commercial products.
In addition, the use of nonionic surfactants or fatty compounds, for example pentaerythritol difatty acid esters, in combination with small quantities of fatty alcohol or fatty amine polyglycol ethers as a raw material for the production of fabric softeners is claimed in EP-B 0 494 769 (Colgate).
Now, the problem addressed by the present invention was to provide new nitrogen-free anionic conditioning formulations which would be free from the disadvantages mentioned above.
DESCRIPTION OF THE INVENTION
The present invention relates to nitrogen-free anionic conditioning formulations containing sulfated polyol fatty acid esters corresponding to formula (I): ##STR2## in which R.sup.1 CO is a linear or branched, saturated and/or unsaturated acyl radical containing 6 to 22 carbon atoms, R.sup.2 represents hydrogen, an OCR.sup.1 group or an SO.sub.3 X group, R.sup.3 is hydrogen or an (OCH.sub.2 CH.sub.2).sub.m OR.sup.2 group, n is 0 or a number of 1 to 5, m is 0 or a number of 1 to 10 and X is an alkali metal, alkaline earth metal, ammonium, alkylammonium, alkanolammonium or glucammonium ion.
It has surprisingly been found that sulfated polyol fatty acid esters have very good conditioning properties, are readily biodegradable and, hence, have all the necessary qualifications to be successfully used in conditioners and fabric softeners.
Polyol Fatty Acid Esters
Particularly suitable starting materials for the production of the sulfated polyol fatty acid esters are fatty acid esters of trimethylol propane and pentaerythritol or fatty acid esters of adducts of 1 to 10 moles of ethylene oxide with these polyols. These esters are of course largely present in the form of their partial esters, i.e. a significant percentage of free hydroxyl groups at which sulfation can take place is present. Trimethylol propane or pentaerythritol difatty acid esters or mixtures containing an average of two fatty acid groups per molecule are preferred on performance grounds. Advantageous fatty acid components are, above all, C.sub.12-18 fatty acids, but especially technical C.sub.16/18 tallow fatty acids which may have iodine values in the range from 0 to 40. Accordingly, the preferred starting materials are ditallow fatty acid esters of trimethylol propane and pentaerythritol.
Sulfation
The sulfation of the polyol fatty acid esters may be carried out by any of the known methods for the sulfation of fatty acid lower alkyl esters (J. Falbe (ed.), "Surfactants in Co
REFERENCES:
patent: 3808200 (1974-04-01), Bistline et al.
patent: 5117032 (1992-05-01), Fabry et al.
Seifen-Ole-Fete-Wachse, 117, 287-292 and 690-694 (1991).
J. Falbe (ed.), "Surfactants in Consumer Products", Springer, Verlag, Berlin-Heidelberg, 1987, p. 61.
Behler Ansgar
Uphues Gunther
Wahle Bernd
Boyer Charles I.
Henkel Kommanditgesellschaft auf Aktien
Jaeschke Wayne C.
Lieberman Paul
Millson Jr. Henry E.
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