| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an ink backflow preventive body composition for a writing implement, disposed at the end face of ink directly stored in an ink storage tube, having sufficient ink backflow preventing performance when placed still in an upright state or a horizontal state, and excelling in ink follow-up performance of smoothly moving toward a pen point with the decrease of ink in writing. <P>SOLUTION: The ink backflow preventive body composition for the writing implement contains polybutene as base oil, and polyamide resin represented by a general formula, as a thickener. <P>COPYRIGHT: (C)2011,JPO&INPIT |
