Oil-based ink composition for a writing instrument and writing

文件类型：PDF文档
文件大小：123K
PROBLEM TO BE SOLVED : To provide : an oil-based ink composition for writing instruments having good ink temporal stability by suppressing precipitates such as metal salts generated by reaction with ink components; and writing instruments using the same.SOLUTION : An oil-based ink composition for writing instruments comprises at least a colorant, an organic solvent, and a compound of general formula (1), where Rto Rare each an alkyl group or hydrogen group and preferably one of Rto Ris a C1-5 alkyl group.SELECTED DRAWING : None