Back to results
US 2024/0101853 A1Published application
Color-change and erasable writing compositions, writing instruments, and systems
AssigneeCrayola LLC
InventorsMichael Moskal, Abigail E. Meyer, Margaret Katherine Brogan
Life of this patent
Estimating the term…
Abstract
The present invention provides writing compositions that are capable of being erased or changed in color chemically. The present invention also provides erasing media for erasing or changing the color of marks produced with the writing compositions, as well as writing systems and incorporating the erasing media and the writing compositions. The present invention further provides writing instruments produced using the writing compositions.
Claims14
A kit comprising:
- a writing instrument, the writing instrument comprising a writing composition including:
- a phenolic resin,
- a reaction medium comprising one or more of fatty acids, waxes, alkanes, and alkenes,
- at least one leuco dye, and
- optionally at least one additive;
- and
- an erasing medium comprising:
- water,
- at least one proton donor or electron acceptor,
- at least one surfactant, and
- at least one preservative.
8 more elements
Dependencies are inferred from the claim text.