Cleaning compositions for solid surfaces – auxiliary compositions – Auxiliary compositions for cleaning – or processes of preparing – Textile softening or antistatic composition
Patent
1997-07-10
1998-12-29
Lieberman, Paul
Cleaning compositions for solid surfaces, auxiliary compositions
Auxiliary compositions for cleaning, or processes of preparing
Textile softening or antistatic composition
510276, 510280, 510289, 510308, 510327, 510329, 510330, 510341, 510356, 510405, 510409, 510411, 510413, 510421, 510504, 510524, 510521, 510522, 510527, C11D 162, C11D 174, C11D 1835
Patent
active
058542019
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates generally to textile treatment compositions and, more particularly, to textile softener concentrates with improved dispersibility in cold water based on pentaerythritol and/or dipentaerythritol fatty acid partial esters and a special emulsifier combination of certain quaternary nitrogen compounds and certain nonionic compounds, to a process for their production and to the use of the emulsifier system.
In the context of the invention, textile softener concentrates are understood to be preparations which may be used both in the textile field for the treatment of yarns, fibers, knitted fabrics, woven fabrics or non-wovens and in the home as aftertreatment preparations for washed textiles.
2. Discussion of the Related Art
Softeners are used in the textile industry and in aftertreatment preparations for washed textiles, for example to produce a pleasant fluffy feel, and to improve the processing properties or even the care of the textiles. Quaternary ammonium compounds are normally used as softeners because they are absorbed particularly easily by textiles. One example of such quaternary ammonium compounds are quaternized difatty acid alkanol-amine esters, so-called esterquats, which unfortunately dissolve or disperse inadequately in cold water in relatively high concentrations so that, for example, even the production of aqueous concentrates with an esterquat content of less than 30% by weight is difficult. Dispersibility in cold water can be improved by addition of small quantities of carboxylic acid esters (DE-A-36 12 479) or by addition of fatty alcohols, fatty alcohol polyglycol ethers or polyol fatty acid partial esters (DE-A-42 32 448).
Esters of pentaerythritol and/or dipentaerythritol have recently been proposed as softeners instead of esterquats or other quaternary ammonium compounds. For example, EP-A-494 769 describes water-containing textile softeners which contain pentaerythritol distearate in particular as the principal softener component. However, small quantities of quaternary ammonium compounds, such as esterquats, as softeners are acceptable. To obtain aqueous emulsions with an active content of pentaerythritol esters of 1 to 25%, EP-A-494 769 recommends the addition of emulsifiers, such as higher alkyl dialkanol-amines and/or alkyl polyethylene glycol ethers. Although these emulsifiers are capable of stabilizing lower concentrates with an active content of pentaerythritol esters of 1 to 25%, they lose efficiency in higher concentrates. With the assistance of these emulsifiers, the water-free pentaerythritol/emulsifier mixtures show poor dispersibility in cold water with the result that dispersion in cold water is extremely difficult.
On account of these difficulties, the user would prefer the manufacturer to disperse the concentrate in water although this would involve the storage and transport of considerable quantities of water and, accordingly, would make little sense from the economic point of view.
Accordingly, the problem addressed by the present invention was to provide emulsifiers for softener concentrates which, on the one hand, would enable textile softener concentrates with a high content of pentaerythritol esters to be dispersed in cold water, but which on the other hand would not affect the softening performance of the pentaerythritol esters. Finally, the softener concentrates as a whole would be able to produce the same softness as the quaternary ammonium compounds known as very good softeners from the prior art.
DESCRIPTION OF THE INVENTION
Surprisingly, the problem stated above has been solved by a special emulsifier combination of a quaternary ammonium compound selected from the group of quaternized alkoxylated alkylamines and esterquats and a nonionic compound selected from the group of ethoxylated and/or propoxylated fatty acids or fatty acid esters and end-capped fatty alcohol polyglycol ethers.
Accordingly, the present invention relates to textile softener concentrates with improved dispersi
REFERENCES:
patent: 5292910 (1994-03-01), Raths et al.
patent: 5505866 (1996-04-01), Bacon et al.
patent: 5545350 (1996-08-01), Baker et al.
patent: 5593614 (1997-01-01), Laitem et al.
Behler Ansgar
Folge Almud
Uphues Guenther
Wahle Bernd
Waltenberger Peter
Boyer Charles
Grandmaison Real J.
Henkel Kommanditgesellschaft auf Aktien
Jaeschke Wayne C.
Lieberman Paul
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