Non-aqueous ball point pen ink
AssigneeHuels Aktiengesellschaft
InventorsBernhard Huber, Werner Freitag
Life of this patent
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Abstract
Non-aqueous ball point pen inks, which contain dyes, resins, solvents and additives which demonstrate improved rheological behavior under the most varied climatic conditions. Leaking and spotting are reliably avoided, and ink production is simplified. Alcohol-soluble cellulose derivatives are used as additives.
Claims17
A non-aqueous ball point pen ink containing a dye, resin and solvent, said ink comprising 0.01 to 10% by weight of an alcohol-soluble cellulose compound and having a viscosity in the range of 2-15 Pa.sup.. s at 23.degree. C.
A method for improving the viscosity/temperature behavior of a ball point pen ink and reducing the sensitivity of the ink to moisture, comprising adding 0.01 to 10% by weight of an alcohol-soluble cellulose compound to a ball point pen ink containing a dye, resin and solvent, said ink having a viscosity of 2-15 Pa.sup.. s at 23.degree. C.
A non-aqueous ball point pen ink containing a dye and resin, said ink comprising 0.01 to 10% by weight of an alcohol-soluble cellulose compound, 45 to 70% by weight of a solvent selected from the group consisting of C.sub.6-12 aralkyl alcohols and C.sub.12-30 fatty acids, said ink having a viscosity of 2-15 Pa.sup.. s at 23.degree. C.
Dependencies are inferred from the claim text.