Hard lead for a pencil

Abstract

A fluorescent color hard lead for color pencils and marking crayons includes a matrix comprised of at least one material selected from the group consisting of a fatty acid metal salt, a fatty acid ester, and a wax; a binder; and a filler which is aluminum silicate; and particles which are intimately mixed into the matrix and which are comprised of at least one synthetic polymer and at least one fluorescent dye with which the at least one synthetic polymer is dyed, the at least one synthetic polymer being selected from the group consisting of homopolymers from one monomer and copolymers from at least two monomers, the monomers being selected from the group consisting of acrylic acids, acrylates, acrylonitriles, and styrene, which monomers have been polymerized in an aqueous solution into which is added the at least one fluorescent dye to provide a dispersion, which dispersion is added to the matrix directly, wherein the dyed particles are uniformly distributed throughout the matrix whereby the fluorescent color hard lead is uniformly colored and produces uniformly colored lines in use.

Dependencies are inferred from the claim text.