Color-changing wallpaper adhesive primer/activator
AssigneeThe Dial Corporation
InventorsGerald Russo, Merle Houck, Robert Puchalski
Life of this patent
Estimating the term…
Abstract
Adhesives and primer compositions that include water, a polymer and a pH indicator. The adhesives and primers have a visually-detectable color when wet, and preferably dry to a clear or transparent film, while having good flow and spreadability. The adhesives and primers provide a visual indication of wetness by including a pH indicator such that when the composition is wet, the pH indicator is colored such that the color and the intensity of the color provides a visual indication of wetness; sufficiency of thickness; and uniformity of application of the adhesive or primer.
Claims68
A wet wallpaper adhesive composition comprising water, an adhesive polymer, a pH adjuster that evaporates when the composition is dried, and a pH indicator, wherein said pH indicator provides a visible color when wet and provides no visible color when dry.
A wet wallpaper primer composition comprising water, a polymer, a pH indicator, and a pH adjuster that evaporates when the composition is dried, wherein said pH indicator provides a visible color when wet and provides no visible color when dry.
In a wet adhesive composition comprising, water and an adhesive polymer, the improvement comprising the addition of a pH adjuster that evaporates when the composition is dried, and a sufficient amount of a pH indicator such that the pH indicator imparts a visible color to said adhesive composition when said adhesive composition is wet and does not impart a visible color to said adhesive composition when said adhesive composition is dry.
A method of adhering a paper to a wall comprising, applying a wet, colored adhesive to said wall or to a back surface of said paper, and prior to adhering said back surface to said wall, inspecting the adhesive for continuous color on the entire area where adhesive was applied, and then applying more of said wet, colored adhesive or more water where the adhesive is colorless, and then adhering said paper to said wall, and allowing said wet, colored adhesive to dry and become colorless.
A wet wallpaper activator solution comprising water, an adhesive polymer, a pH indicator, and a pH adjuster that evaporates when the composition is dried, wherein said pH indicator provides a visible color when wet and provides no visible color when dry.
A method of applying a paper to a wall comprising,
- applying a wet, colored adhesive to said wall or to a surface of said paper to provide said wall or said surface of said paper with a color intensity, and prior to adhering said adhesive to said paper or to said surface of said wall,
- inspecting said color intensity of said applied adhesive to determine the uniformity of said color intensity, and where said color intensity is uneven,
- spreading said wet, colored adhesive on said wall or said surface of said paper to achieve a uniform color intensity;
- or
- adding additional wet, colored adhesive to said wall or said surface of said paper to achieve a uniform color intensity;
- or
- adding water to said wall or said back surface to achieve a uniform color intensity.
Dependencies are inferred from the claim text.