Backflow inhibitor composition for water-based ball-point pen ink

Abstract

Abstract PURPOSE:To obtain the title composition which can minimize the sticking of an ink to the inside of an ink container tube, by incorporating a gelling agent and a glycerol borate fatty acid ester into a specified base material. CONSTITUTION:A base material (A) comprising a hardly volatile or nonvolatile organic liquid selected from hydrocarbons (e.g., liquid paraffin) is mixed with 1-20wt% gelling agent (B) (e.g., a fine particulate silica having silanol groups on its surface and a primary particle diameter of several mum-50mum) and a glycerol borate fatty acid ester (C) (e.g., glycerol borate laurate) to give a backflow inhibitor composition for a water-base ball-point pen ink. This composition is put into the top of a water-base ink of a viscosity of 50-2,000cps (25 deg.C) which has been filled in an ink container tube.

Inventors

• 👤 Hiroshi Miyashita
• 👤 裕志 宮下
• 👤 Shigeru Nagai
• 👤 永井　茂
• 👤 Isao Konuki
• 👤 勲 小貫

Bibliographic Details