Compositions: coating or plastic – Coating or plastic compositions
Patent
1995-06-21
1996-09-17
Brunsman, David
Compositions: coating or plastic
Coating or plastic compositions
106271, C09D19106, C09D19108
Patent
active
055564500
DESCRIPTION:
BRIEF SUMMARY
This application is a 371 of PCT/EP93/03487 filed Apr. 10, 1993.
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to a floor-care formulation in the form of a dispersion which dries leaving a shine on the floor. Formulations such as these are also known as self-shine emulsions.
2. Discussion of Related Art
Nowadays, new previously untreated floors and floors which have been subjected to thorough cleaning are mainly treated with self-shine emulsions to protect them against soiling and damage. These emulsions, which contain wax and/or film-forming polymers in varying amounts, form continuous, glossy and soil-repellent films on the floors after drying. Films with a high percentage wax content can easily be polished and, when necessary, are also easy to remove from the surfaces whereas films consisting predominantly or completely of film-forming polymers are particularly resistant to mechanical stressing. A problem affecting all self-shine emulsions, which has not yet been completely solved, is that the emulsions or dispersions have to dry extremely uniformly on the surfaces if a completely continuous protective film is to be formed. It is very often found that the initially continuous film of the aqueous dispersion breaks up on drying and, in some cases, even contracts to form individual droplets so that the floor-care film formed is patchy in appearance. This effect is particularly noticeable in the case of the dispersions with a substantially neutral pH value which are preferred today. One of the problems addressed by the present invention was to provide an improvement in this regard. Another problem addressed by the invention was to improve the stability of the dispersions, above all during storage at low temperatures.
Description of the Invention
The present invention relates to an aqueous self-shine emulsion for the care of floors which, in undiluted form, has a pH value of 5 to 9 and which contains a natural or synthetic wax and an alcohol from the group consisting of benzyl alcohol, 2-phenyl ethanol, 2-phenoxy-ethanol and mixtures thereof. Self-shine emulsions with a pH value in undiluted form of 6 to 8 are particularly preferred.
The new self-shine emulsions are distinguished by high stability in storage, particularly at low temperatures. A particularly noteworthy feature is their extremely uniform drying behavior characterized by the virtual absence of cracks in the film, so that uniform floor-care films of satisfactory appearance are obtained.
Suitable waxes for the self-shine emulsions according to the invention are both natural waxes and synthetic waxes which may be of natural origin or even fully synthetic. Examples are polyethylene waxes, oxidized polyethylene waxes, montan ester waxes, paraffin waxes, candellila wax and carnauba wax. Of these waxes, montan ester wax, paraffin wax, carnauba wax and polyethylene wax are preferred in the formulations according to the invention. Wax mixtures of montan ester wax and polyethylene wax and of montan ester wax and carnauba wax are particularly preferred. The wax content in the formulations according to the invention may be from 2 to 50% and is preferably from 2 and 15% by weight.
Unless predominantly self-emulsifying waxes are used, the emulsions according to the invention contain typical wax emulsifiers in quantities of 0.1 to 10% by weight and preferably in quantities of 0.5 to 3% by weight. Examples of such emulsifiers are oleyl cetyl alcohol ethoxylated with 20 moles of ethylene oxide (EO) and sorbitan monooleate.
The second characteristic component of the self-shine emulsion according to the invention is an aromatic alcohol from the group consisting of benzyl alcohol, 2-phenylethanol and 2-phenoxyethanol. Mixtures of these alcohols may of course also be used. In conjunction with the waxes in the aqueous neutral emulsion, these alcohols appear to be responsible for the unexpected properties of the new formulations mentioned above. Small quantities of these alcohols are generally sufficient. Their percentage content
REFERENCES:
patent: 4460734 (1984-07-01), Owens et al.
Bossek Harald
Faubel Heiko
Osberghaus Rainer
Rogmann Karl-Heinz
Skodell Birgit
Brunsman David
Grandmaison Real J.
Henkel Kommanditgesellschaft auf Aktien
Jaeschke Wayne C.
Szoke Ernest G.
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