Aqueous ink having an extended cap-off time and process of manufacture thereof
AssigneeJ.S. Staedtler GmbH & Co. KG
InventorRosmarie Fraas
Life of this patent
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AssigneeJ.S. Staedtler GmbH & Co. KG
InventorRosmarie Fraas
Estimating the term…
An aqueous ink having an extended cap-off time and a process for manufacturing the ink, wherein the aqueous ink is composed of water as the predominant or exclusive solvent, hydrocolloid/hydrocolloids or polysaccharide/polysaccharides as binding agents or film-forming agents, moist-keeping agents, coloring agents, emulsifying agents and possibly additional additives, wherein the ink further includes gum arabic and bees wax as film-forming agents. The ink is particularly an ink for writing, drawing, painting, printing or marking on normal paper or other absorbent writing carriers. The ink is particularly intended for use in fountain pens, ballpoint pens or stencil writers, in so-called felt-tip pens or pencils, in ink jet systems and/or in other capillary duct writing devices or systems.
In an aqueous ink having an extended cap-off time for writing, drawing, painting and/or printing on normal paper or other absorbent writing carriers, for use in fountain pens, ballpoint pens or stencil pen or pencils, in felt-tip pens, as well as in ink-jet systems and/or other capillary duct writing devices or systems, the ink being a mixture comprised of water as a predominant or exclusive solvent, one of hydrocolloid and polysaccharide as binding agent or film-forming agent, moist-keeping agents, coloring agents, emulsifying agents and possible additional additives, the improvement comprising the ink containing gum arabic and bees wax as the film-forming agents.
In a process of manufacturing an aqueous ink having an extended cap-off time for writing, drawing, painting and/or printing on normal paper or other absorbent writing carriers, for use in fountain pens, ballpoint pens or stencil pen or pencils, in felt-tip pens, as well as in ink-jet systems and/or other capillary duct writing devices or systems, the ink being comprised of water as a predominant or exclusive solvent, one of hydrocolloid and polysaccharide as binding agent or film-forming agent, moist-keeping agents, coloring agents, emulsifying agents and possible additional additives, the improvement comprising manufacturing the ink as an oil-in-water emulsion, further comprising the steps of preparing a bees wax emulsion and a gum arabic solution, preparing a basic mixture of the bees wax emulsion and the gum arabic solution and adding a moist-keeping agent and an emulsifying agent, preparing an initial mixture from solvent, preservative and buffer agent, preparing a coloring solution by adding a dye to the initial mixture, and preparing the ink by stirring the basic mixture into the coloring solution.
Dependencies are inferred from the claim text.