Erasable ink composition containing a polymer-encapsulated colorant derived from monomer containing dissolved colorant
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United States of America Patent
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Aug 26, 1997
Issued Date -
N/A
app pub date -
May 20, 1996
filing date -
Dec 20, 1994
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Abstract
An erasable ink composition contains an aqueous dispersion of water-insoluble polymer-encapsulated colorant obtained from the emulsion polymerization of at least one hydrophobic emulsion-polymerizable monomer with at least a portion of the monomer containing colorant dissolved therein. The ink is intended for use in any of a variety of marking instruments, in particular, a ball-point pen.
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