Color lead for a writing device, drawing device or painting device
An unburnt color lead for writing devices, drawing devices and painting devices, includes at least one coloring material, at least one binder, at least one organic lubricant which is solid at room temperature, and at least one filler material whose particles essentially have a disk-shaped configuration. The color lead contains 20 to 80 weight % of the at least one filler material, and the color lead contains at least 20 weight % hexagonal bornitride as a first filler material.
1. An unburnt color lead for writing devices, drawing devices and painting devices, the color lead comprising at least one chromophoric agent, at least one binder, at least one organic lubricant which is solid at room temperature, and at least one filler material whose particles are mainly disk-shaped, wherein the color lead contains 30 to 80 weight % of the at least one filler material, and wherein the at least one filler material is hexagonal bornitride.
2. The color lead according to claim 1 , wherein the lead contains as a second filler material at least one material selected from the group of layer silicates.
3. The color lead according to claim 2 , wherein the layer silicates are selected from the group consisting of stearite, mica, talc, pyrophylite, muscovite and/or caolinite.
4. The color lead according to claim 1 , wherein the binder is at least one of a water soluble cellulose derivate, starch and/or polyvinyl alcohol.
5. The color lead according to claim 1 , wherein the lubricant comprises at least of a stearine acid and a stearate.