| abstract |
An environment friendly writing instrument that includes a hollow body, an ink reservoir at the first end of the hollow body to hold ink, and a felt tip which extends from the reservoir to the second end of the hollow body, and a dye formulation comprising (I) a vegetable oil ester in an amount of between about 5 and 80 percent by weight of the dye formulation, (ii) a liquid solvent dye present in the dye formulation in an amount sufficient to impart a predetermined color to the dye formulation and (iii) sulfur in an amount of less than about 10 ppm, and wherein the ink is formed from the dye formulation. |