Water based dye ink composition for free ink rollerball pen

Details Water based dye ink composition for free ink rollerball pen Water based dye ink composition for free ink rollerball pen

1998-12-10

2000-03-14

Jagannathan, Vasu

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

106 3127, 106 3133, C09D 1116, C09D12504, C09D13308, C09D13310

Patent

active

060373911

ABSTRACT:
A water based dye ink composition for a free ink rollerball pen characterized in that white resin particles which are insoluble in an aqueous medium and have an average particle diameter of 100 to 1000 nm and a refractive index of 1.50 or more at 20.degree. C. are added to a water based ink composition for a writing instrument comprising a dye and an aqueous medium to thereby allow the visible color of the ink liquid to be approximate to the visible color of lines written on a sheet of white paper.

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patent: 5203913 (1993-04-01), Yamamoto et al.
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patent: 5547499 (1996-08-01), Kawasumi et al.
patent: 5900445 (1999-05-01), Chandler et al.
Brandrup, J. Immergut, E.H., and Grulke, E.A; Polymer Handbook, 4th Ed. John Wiley and Sons, New York (p. VI-581), 1999.

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