Water-based, resin-free and solvent-free eradicable ball-pen...

Details Water-based, resin-free and solvent-free eradicable ball-pen... Water-based, resin-free and solvent-free eradicable ball-pen...

2007-01-16

2007-01-16

Sample, David (Department: 1755)

Compositions: coating or plastic

Coating or plastic compositions

Marking

C106S031580

Reexamination Certificate

active

10891810

ABSTRACT:
Improved combination eradicable ball-pen and re-write inks are disclosed. The combination eradicable and re-write ball-pen inks disclosed include water, glycerol, one or more acids and an eradicable dye. Glycerol is present in an amount greater than the water content, which is relatively low and the eradicable dye is provided in substantial amounts so that the glycerol and eradicable dye provide the requisite viscosity for a ball-pen ink. The combination of the high dye content and acid content also enables the eradicable ball-pen ink to be used as the re-write ink.

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