Compositions for solid writing materials and writing implements
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United States of America Patent
Stats
-
Jul 15, 1980
Grant Date -
N/A
app pub date -
Feb 13, 1979
filing date -
Feb 22, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
This invention relates to solid writing materials capable of giving writings, drawings or markings which are readily erasable with a dry eraser such as a blackboard eraser, dry fabric, etc. This invention provides compositions for such solid writing materials comprising (i) an emulsifiable polyethylene wax, (ii) a liquid organic compound substantially incompatible with the component (i) and having a specified boiling point and viscosity, (iii) an organic solvent capable of dissolving or uniformly dispersing the components (i) and (ii) and having a specified boiling point and (iv) a pigment.
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Cited Art Landscape
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