Ballpoint-pen ink compositions

Details Ballpoint-pen ink compositions Ballpoint-pen ink compositions

2007-11-20

2007-11-20

Shosho, Callie (Department: 1714)

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

Synthetic resins

Processes of preparing a desired or intentional composition...

C524S556000, C524S560000

Reexamination Certificate

active

10680254

ABSTRACT:
An ink composition useful in an oil-based ballpoint pen capable of drawing a satisfactory line on the surfaces of various materials to be written which are not only papers but also non-permeable materials such as glasses and plastics as well as fibrous materials such as fabrics is provided. Such a ink composition comprises a colorant, an organic solvent having a vapor pressure of 5.0 to 50 mmHg (20° C.) as a main solvent, such as n-propyl alcohol, isopropyl alcohol and propylene glycol monomethyl ether and a shear-viscosity reducing agent.

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patent: 2004/0170587 (2004-09-01), Vondruska
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