Abstract: Writing compositions capable of undergoing a color development when brought into contact with a specific substrate including a color change-inducing compound are provided. Writing instruments comprising such writing compositions are also provided. Application of the writing compositions to surfaces other than the intended substrate will avoid color development and prevent staining of the unintended surfaces. The writing compositions include at least one filler; at least one leuco dye; at least one lipid including at least one wax, at least one fatty acid, at least one fatty acid ester; an antioxidant; and optionally at least one additive.

Abstract: Writing compositions capable of undergoing a color development when brought into contact with a specific substrate including a color change-inducing compound are provided. Writing instruments comprising such writing compositions are also provided. Application of the writing compositions to surfaces other than the intended substrate will avoid color development and prevent staining of the unintended surfaces. The writing compositions include at least one mineral filler, at least one leuco dye, one or more lipids including one or more waxes, one or more fatty acids, or one or more fatty acid esters or fatty amides, titanium dioxide, and optionally at least one additive.

Abstract: A thermoplastic writing composition includes at least one particulate filler including one or more of days, silicates, or carbonates, at least one thermoplastic binder material including one or more of high density polyethylene, polypropylene, and styrene, one or more waxes chosen from soy wax, paraffin wax, and beeswax, at least one colorant, and optionally, at least one surfactant.

Abstract: Writing compositions capable of undergoing a color development when brought into contact with a specific substrate including a color change-inducing compound are provided. Application of the writing compositions to surfaces other than the intended substrate will avoid color development and prevent staining of the unintended surfaces. The writing compositions include at least one particulate filler including a clay, at least one leuco dye, one or more waxes chosen from a group consisting of polyethylene wax, soy wax, paraffin wax, and beeswax, at least one thermoplastic binder material including a polyethylene, titanium dioxide, and optionally at least one additive.

Abstract: Writing compositions capable of undergoing a color development when brought into contact with a specific substrate including a color change-inducing compound are provided. Writing instruments comprising such writing compositions are also provided. Application of the writing compositions to surfaces other than the intended substrate will avoid color development and prevent staining of the unintended surfaces. The writing compositions include at least one mineral filler, at least one leuco dye, one or more lipids including one or more waxes, one or more fatty acids, or one or more fatty acid esters or fatty amides, titanium dioxide, and optionally at least one additive.

Abstract: Writing compositions capable of undergoing a color development when brought into contact with a specific substrate including a color change-inducing compound are provided. Application of the writing compositions to surfaces other than the intended substrate will avoid color development and prevent staining of the unintended surfaces. The writing compositions include at least one particulate filler including a clay, at least one leuco dye, one or more waxes chosen from a group consisting of polyethylene wax, soy wax, paraffin wax, and beeswax, at least one thermoplastic binder material including a polyethylene, titanium dioxide, and optionally at least one additive.