C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
C09D 11/18 (2006.01)
Patent
CA 2075730
The present invention provides an aqueous pigment ink for ball-point pen which can inhibit surface tension from extremely deteriorating to protect written letters from blur and which is excellent in non-drying properties and which has lubricating properties enough to smoothly rotate a ball and to decrease friction of a ball seat, whereby a writing performance can be remarkably improved and a comfortable writing performance can be given. The aqueous pigment ink composition for ball-point pens of the present invention is characterized by comprising a pigment, a dispersant, water and an adduct of at least one polyhydric alcohol with an alkylene oxide, the polyhydric alcohol being selected from the group consisting of polyglycerin, glycerin, trimethylolpropane and a mixture thereof.
Macrae & Co.
Mitsubishi Pencil Kabushiki Kaisha
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