US 4,070,510 A · Aqueous polish composition

Abstract

The aqueous base polish composition, which is particularly adaptable for use as a household floor polish, contains a non-volatile, solid film former, such as an acrylic copolymer, dispersed in the aqueous phase or base, a water-soluble, acid-base indicator, such as thymolphthalein, which is colored at a pH above a predetermined level and is colorless at a lower pH, in a sufficient amount to impart a distinctive original color to the composition and a sufficient amount of an alkaline material, such as potassium hydroxide, to raise the overall pH of the composition above that predetermined level, e.g., above about 11 or higher. Upon being applied on the surface of flooring, the colored polish composition retains its original color for a finite period of time while in the liquid state, e.g., 30 seconds to 2 minutes, and becomes colorless as the water evaporates during formation of a protective film finish. The color indicator becomes an integral part of the dried clear and colorless film. Upon the application of an aqueous cleaning or stripping solution used for removing one or more coats of the dried film after use and having a pH above a determined level, the film reverts to the original color of the composition so that one can readily observe whether the old film has been completely removed before the floor becomes dry. The film former can include optional ingredients, such as a wax, an alkali-soluble resin and a permanent plasticizer to improve the wear resistance and finish properties of the resultant film. The polish composition can also include fugitive plasticizers or coalescing aids to facilitate the formation of a smooth, continuous protective film and a chelating agent to increase the color retention time after application.

Claims23

Dependent claims

An aqueous polish composition driable to provide a substantially clear finish on a substrate to which the polish composition is applied comprising

an aqueous phase;
a non-volatile, solid film former, which is capable of forming a smooth, substantially colorless, protective film on the substrate, uniformly dispersed in said aqueous phase;
a sufficient amount of a dispersing agent to form a stable dispersion of said film former in said aqueous phase and to permit said film former upon evaporation of the water to deposit therefrom as a smooth film on the substrate;
a water-soluble, acid-base indicator which is colored at a pH above a predetermined level and is colorless at a lower pH in an amount sufficient to impart a distinctive color to said composition when the overall pH of said composition is above said predetermined level;
and
a sufficient quantity of an alkaline material capable of solubilizing in said aqueous dispersion to raise the overall pH of said composition above said predetermined level, said film former, said dispersing agent and said alkaline material having a coloration which does not mask the color imparted to said composition by said indicator;
whereby, after application on the substrate, said composition retains its original color for a finite time period while in the liquid state and then becomes substantially colorless as the water evaporates during formation of the film.

4 more elements

An aqueous floor polish composition driable to provide substantially clear finish on a substrate to which the polish composition is applied comprising

an aqueous phase;
a non-volatile film former, which is capable of forming a smooth, substantially colorless, protective film on the substrate and includes an emulsifiable acrylic copolymer, uniformly dispersed in said aqueous phase;
a sufficient amount of a dispersing agent to form a stable dispersion of said film former in said aqueous phase and to permit said film former upon evaporation of the water to deposit therefrom as smooth film on the flooring;
a water-soluble, acid-base indicator selected from the group consisting of thymolphthalein, phenolphthalein, orthocresolphthalein, and ethyl bis (2,4-dinitrophenol) acetate in a sufficient quantity to impart a distinctive color to said composition when the pH of said composition is at a level high enough for said indicator to change from colorless to a color;
and
a sufficient quantity of an alkaline material capable of solubilizing in said aqueous dispersion to raise the pH of said composition to said level, said film former, said dispersing agent and said alkaline material having a coloration which does not mask the color imparted to said composition by said indicator;
whereby, after application on the resilient flooring, said composition retains its original color for a finite time period while in the liquid state and then becomes substantially colorless as the water evaporates during the film formation.

4 more elements

A method for treating and preserving the surface of a substrate comprising

applying on the surface of the substrate an aqueous alkaline polish composition which is driable to a substantially clear finish and includes as its essential ingredients:
an aqueous base,
a non-volatile, solid film former, which is capable of forming a smooth, substantially colorless, protective film on the substrate and includes an emulsifiable acrylic copolymer, uniformly dispersed in said aqueous phase,
a sufficient amount of a dispersing agent to form a stable dispersion of said film former in said aqueous phase and to permit said film former upon evaporation of the water to deposit therefrom as a smooth film on the substrate,
a water-soluble acid-base indicator which is colored above a predetermined level and is colorless at a lower pH, in an amount sufficient to impart a distinctive color to said composition when the overall pH of said composition is above said predetermined level, and
a sufficient amount of an alkaline material capable of solubilizing in said aqueous dispersion to raise the pH of said composition to said predetermined level, said film former, said dispersing agent and said alkaline material having coloration which does not mask the color imparted to said composition by said indicator,
whereby, after application on the substrate, said composition retains its original color for a finite time period while in the liquid state and then becomes substantially colorless as the water evaporates, the resultant, dried protective film containing said indicator.

4 more elements

Dependencies are inferred from the claim text.

Aqueous polish composition

Life of this patent

Aqueous polish composition

Life of this patent

Abstract

Claims23