Erasable colored pencil lead

A method of erasing a mark made by an erasable colored pencil lead composition on a surface, the method comprising applying an ordinary pencil eraser to said mark, wherein said mark forms a cohesive layer of a colored pencil lead composition comprising a colorant, one or more binder resins, a fibrillatable or fibrillated material, and a filler, wherein said erasable colored pencil lead composition is substantially free of low melting waxes or waxy materials having a melting or softening point of about 90° C. or less.

An erasable colored pencil lead composition comprising a colorant, one or more binder resins, a fibrillatable or fibrillated material, a non-fibrillatable particulate lubricant, and a filler, wherein said erasable colored pencil lead composition is substantially free of low melting waxes or waxy materials having a melting or softening point of about 90° C. or less.

A process for preparing an erasable colored pencil lead comprising a colorant, one or more binder resins, a fibrillatable or fibrillated material, a non-fibrillatable particulate lubricant, and a filler, wherein said erasable colored pencil lead is substantially free of low melting waxes or waxy materials having a melting or softening point of about 90° C. or less, said process comprising blending said colorant, said binder resin or resins, said fibrillatable or fibrillated material, said non-fibrillatable particulate lubricant, and said filler to obtain a blend and forming said pencil lead from said blend.

An erasable colored pencil lead composition capable of producing on a White Bond paper a second mark having a not erased rating of about 15% or less, wherein said second mark is formed by erasing a first mark produced on said paper under a constant applied force which is in the range of 300-600 g with an ordinary pencil eraser applied to said first mark under a constant applied force of 600 g, wherein the erasable colored pencil lead composition comprises a colorant, one or more binder resins, a fibrillatable or fibrillated material, and a filler, and is substantially free of low melting waxes or waxy materials having a melting or softening point of about 90° C. or less.

An erasable colored pencil lead composition comprising a colorant, one or more binder resins, a fibrillatable or fibrillated material, a lubricant, and a filler, wherein the composition is substantially free of low melting waxes or waxy materials having a melting or softening point of about 90° C. or less and a needle penetration hardness value of 5 units or more.

An erasable colored pencil lead composition comprising a colorant, one or more binder resins, a fibrillatable or fibrillated material, a non-particulate lubricant, and a filler, wherein the composition is substantially free of low melting waxes or waxy materials having a melting or softening point of about 90° C. or less.