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1. (WO2013146192) WATER-BASED INK COMPOSITION FOR BALLPOINT PEN

Pub. No.:    WO/2013/146192    International Application No.:    PCT/JP2013/056478
Publication Date: Fri Oct 04 01:59:59 CEST 2013 International Filing Date: Sat Mar 09 00:59:59 CET 2013
IPC: C09D 11/18
Applicants: MITSUBISHI PENCIL COMPANY, LIMITED
三菱鉛筆株式会社
Inventors: ITOU, Hiroyuki
伊藤 浩之
OGURA, Kousuke
小椋 孝介
MIYAZAKI, Yuichi
宮崎 祐一
KAWAKITA, Yoshihiro
川北 美裕
Title: WATER-BASED INK COMPOSITION FOR BALLPOINT PEN
Abstract:
Provided is a water-based ink composition for a ballpoint pen having excellent writing stability without leading to writing defects such as smudging and the like. A water-based ink composition for a ballpoint pen in which the oil phase, in relation to the water phase, is in an oil-in-water emulsion, wherein the oil phase or the oil phase and the water phase contains a colorant, and the oil phase includes a fatty acid with 6 to 22 carbon atoms, as one component that constitutes the oil phase.