Erasable ink composition
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United States of America Patent
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-
Mar 25, 1986
Grant Date -
N/A
app pub date -
Jun 20, 1984
filing date -
Jun 22, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
1. An erasable ink composition for writing on an impervious writing surface to form thereon a writing or marking which is erasable by wiping the surface; the composition comprising: about 40-90% by weight of a volatile organic solvent; about 1-20% by weight of a colorant; about 0.5-30% by weight of a resin which is soluble in the organic solvent; and about 1-25% by weight of a fatty acid ester of trimethylolalkane of the general formula ##STR1## wherein R.sup.1 represents an alkyl of 1-3 carbons, R.sup.2 and R.sup.3 represent independently hydrogen or an alkyl of 1-21 carbons, and R.sup.4 represents an alkyl of 3-21 carbons.
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