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US 5,498,280 AGranted
Phosphorescent and fluorescent marking composition
AssigneeBinney & Smith Inc.
InventorsDavid C. Fistner, Colin M. Snedeker
Life of this patent
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Abstract
A phosphorescent and fluorescent marking composition, e.g., a crayon, comprising both high and low molecular weight polyethylene glycols in combination with phosphorescent and fluorescent pigments. The composition advantageously preferably further includes at least one filler, which preferably includes a water-miscible filler, a water-soluble surfactant, and a plasticizer.
Claims27
A marking composition comprising
- (a) a high molecular weight polyethylene glycol having a molecular weight of at least about 10,000;
- (b) a low molecular weight polyethylene glycol having a molecular weight ranging from about 100 to about 1,000;
- (c) a phosphorescent pigment;
- and
- (d) a fluorescent pigment.
2 more elements
Dependencies are inferred from the claim text.