| 摘要 |
PROBLEM TO BE SOLVED: To provide an oily ink for ball-point pens hardly causing a blur of writing without being influenced by the external environmental influence such as atmospheric temperature and humidity. SOLUTION: The oily ink for ball-point pens includes a colorant, an organic solvent, a polyglycerol fatty acid ester, and a mixture of one or more kinds selected among a polyoxyethylene castor oil and/or a polyoxyethylene hardened castor oil and these derivatives, a polyoxyethylene sorbit fatty acid ester and polyoxyethylene sorbitan fatty acid ester. COPYRIGHT: (C)2011,JPO&INPIT |
