Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – For cleaning a specific substrate or removing a specific...
Patent
1996-10-11
1999-03-02
Shah, Mukund J.
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
For cleaning a specific substrate or removing a specific...
510291, C11D 1704, D06L 1704
Patent
active
058771387
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
This is a 371 application of PCT/EP95/01043 filed Mar. 21, 1995, which claims the priority of DE P4411046.4 filed Mar. 30, 1994.
1. Field of the Invention
This invention relates to a scatterable formulation for the dry cleaning of textiles, more especially carpets.
2. Discussion of Related Art
In addition to shampoos, powder-form cleaning formulations have recently been increasingly used for cleaning carpets and other textile coverings in situ, enjoying the advantage that they do not leave any marks and dry more quickly. Cleaning powders of the type in question consist essentially of relatively large quantities of adsorbents and a cleaning liquid--generally consisting for the most part of water--adsorbed thereon. It is assumed that the cleaning liquid is responsible for separating the soil particles from the fibers and transporting them to the adsorbent which, after drying, is removed together with the soil either by brushing or by vacuum cleaning. Various materials have been proposed as adsorbents. Of these, it is only intended here to mention the foam plastic powders described in Austrian patent 296 477. Above all, ground foam of urea/formaldehyde resin has been widely used in practice. More recent developments, as described for example in European patent application 178 566, have led to the use of cellulose powder as an adsorbent. Although an extremely high standard in regard to cleaning performance and non-discoloration had been achieved with cleaning formulations based on cellulose powder, a search was nevertheless made for new compositions which would have an even higher cleaning performance with less dust emission and which could be worked into the carpet without difficulty.
DESCRIPTION OF THE INVENTION
The present invention represents a solution to this problem in the form of a scatterable dry cleaning formulation for textiles which contains cellulose powder as adsorbent and also water and which is characterized in that it contains ground polyurethane foam as an additional adsorbent. In addition, the formulations according to the invention preferably contain relatively small quantities of lower alcohols, viscose sponge flakes and/or surfactants.
The formulations according to the invention are distinguished by an improved cleaning performance with less dust emission and by less wear and tear on the carpet fibers in the working-in phase by comparison with formulations containing cellulose powder as sole adsorbent.
The cellulose powders suitable for use in accordance with the invention are produced from commercial cellulose, which is generally obtained from parts of plants, more especially from wood, by size reduction using mechanical and/or chemical processes. Corresponding powders, which are colorless and substantially free from lignin and other impurities emanating from the plant material, are commercially available in various degrees of fineness. The finer qualities with an average fiber length of 50 to 400 .mu.m are preferred for the purposes of the present invention. In these qualities, the average fiber thickness is between 10 and 50 .mu.m. The particle size of the cellulose powder may also be determined by screening techniques, for example by air jet screening in accordance with DIN 53734. Accordingly, cellulose powders with the following particle size distribution (as determined by the above-mentioned method) are also preferred:
Cellulose powders produced from wood cellulose, more particularly from hardwood cellulose, are preferably used in the formulations according to the invention. Of these powders, those qualities which can readily be obtained solely by mechanical methods, for example by grinding, are particularly preferred. The percentage content of cellulose powder in the formulation according to the invention is preferably from 20 to 60% by weight and more preferably from 25 to 50% by weight, based on the final formulation.
In addition to the cellulose powder, the formulations according to the invention contain ground polyurethane foam, also known as pol
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patent: 4659494 (1987-04-01), Soldanski etal.
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Ditze Alexander
Fleckenstein Theo
Hahn Thomas
Holdt Bernd-Dieter
Kresse Franz
Henkel Kommanditgesellschaft auf Aktien
Jaeschke Wayne C.
Ngo Tamthom T.
Shah Mukund J.
Szoke Ernest G.
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