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US 12,097,722 B2Granted
Erasable writing compositions
AssigneeCrayola LLC
InventorsKeith Allison, Victor Hugo Bedoya
Life of this patent
Estimating the term…
Abstract
A thermoplastic writing composition includes at least one particulate filler including one or more of days, silicates, or carbonates, at least one thermoplastic binder material including one or more of high density polyethylene, polypropylene, and styrene, one or more waxes chosen from soy wax, paraffin wax, and beeswax, at least one colorant, and optionally, at least one surfactant.
Claims28
A thermoplastic writing composition comprising :
- 50% to 64% by weight of at least one particulate filler including one or more of clays, silicates, or carbonates,
- at least one thermoplastic binder material including one or more of high density polyethylene or polypropylene,
- at least 6% by weight of one or more waxes chosen from a group consisting of soy wax, paraffin wax, and beeswax, and
- at least one colorant;
- and
- wherein the composition is configured to be erasable with a standard pencil eraser after application to a paper or cardboard substrate.
3 more elements
Dependencies are inferred from the claim text.