Erasable ball-point pen ink
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United States of America Patent
Stats
-
Dec 16, 1986
Grant Date -
N/A
app pub date -
May 29, 1985
filing date -
Oct 29, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An erasable ball-point pen ink is described comprising a rubber component, a volatile solvent, a pigment and a nonvolatile solvent, said ink further containing at least one dispersant that is liquid at room temperature and completely soluble in said volatile solvent and which is selected from the group consisting of alkyl phosphate esters, amines and oxyethyleneoxypropylene block copolymers, by which a ball-point pen is available that ensures a very smooth ink flow and letter writing during any season of the year without blocking of the small clearance between the writing ball and the ball holder even when the writing tip is uncapped and exposed to the atmosphere for a prolonged period. The ink is particularly adapted to be used with ball-point pens for writing fine letters.
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