Bleaching and dyeing; fluid treatment and chemical modification – Cleaning or laundering – Dry cleaning
Patent
1997-01-28
1998-05-05
Diamond, Alan
Bleaching and dyeing; fluid treatment and chemical modification
Cleaning or laundering
Dry cleaning
8137, 510278, 510462, 510511, 252184, C11D 300, C11D 744, C11D 3382, D06L 100
Patent
active
057467773
DESCRIPTION:
BRIEF SUMMARY
This application is a 371 of PCT/EP95/02288 filed Jun. 6, 13, 1995.
BACKGROUND OF THE INVENTION
1. Field of the Invention This invention relates to a scatterable formulation for the dry cleaning of textiles, more especially carpets.
2. Statement 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 cellulose powders described in European patent application 178 566 which have recently been acquiring particular significance. 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 resoiling and which would result in even less roughening of the carpet surface and in an even lower accumulation of residues of the cleaning formulation on the carpets in the event of repeated use.
According to U.S. Pat. No. 3,630,919, colloidal silica is added in small quantities to powder-form carpet cleaning formulations. Despite certain improvements achieved in this way, the cleaning formulations described in this U.S. patent are also unsatisfactory.
DESCRIPTION OF THE INVENTION
It has now surprisingly been found that scatterable carpet cleaning formulations containing both cellulose powder and colloidal silica are more effective in many respects than the hitherto known formulations.
Accordingly, the present invention relates to a scatterable dry cleaning formulation for textiles which contains cellulose powder, colloidal silicon dioxide and water. In addition, the formulation preferably contains small quantities of surfactant and/or rollable particles of a porous elastic material.
The new cleaning formulation has an extremely high cleaning performance and is distinguished by an only very slight tendency of the correspondingly cleaned textiles towards resoiling. In addition, the tendency to accumulate residues in the event of repeated application to the same textile material is distinctly lower by comparison with conventional formulations. However, the unusually gentle effect on the textile materials during cleaning is particularly surprising. In general, scatterable carpet cleaning formulations only achieve a good cleaning effect when, after scattering onto the carpet, they are worked in by either manual or machine brushing so that they come into contact with all soil-carrying fibers. The brushing-in of the cleaning powder imposes particular demands on the strength of the carpet fibers on account of the forces involved. Roughening of the surface and losses of carpet fibers often cannot be avoided and, in the event of repeated application, can result in visible damage to the textile material. This damage to the textile material which all conventional formulations cause to a more or less considerable extent occurs to a far lesser extent where the formulations according to the invention are used.
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 commerciall
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patent: 3622427 (1971-11-01), Kelly
patent: 3630919 (1971-12-01), Sheaffer et al.
patent: 4659494 (1987-04-01), Soldanski et al.
patent: 4834900 (1989-05-01), Soldanski et al.
patent: 5286400 (1994-02-01), Paszek et al.
Derwent Abstract No. 86-234625 for JP 61-162, 600, Jul. 1986.
Kirk-Othmer Encyclopedia of Chemical Technology, 3rd ed., vol. 20, pp. 766-773 (month unknown), 1982.
Ditze Alexander
Fleckenstein Theo
Hahn Thomas
Diamond Alan
Henkel Kommanditgesellschaft auf Aktien
Jaeschke Wayne C.
Millson Jr. Henry E.
Szoke Ernest G.
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