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US 2008/0075862 A1Published application
Color change cyanoacrylate adhesives
Assignee3M Innovative Properties Company
InventorsKurt Melancon, George Tiers, Larry Lien, Scott Pearson
Life of this patent
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Abstract
A cyanoacrylate-based adhesive composition is disclosed. The cyanoacrylate-based adhesive composition includes a cyanoacrylate monomer, and a bleachable dye including a Michler's hydrol cation or derivatized Michler's hydrol cation, paired with a non-nucleophilic anion that provides a stable color to the cyanoacrylate-based adhesive.
Claims21
A cyanoacrylate-based adhesive composition comprising:
- a cyanoacrylate monomer;
- and
- a bleachable dye comprising Michler's hydrol cation, or derivatized Michler's hydrol cation, paired with a non-nucleophilic anion that provides a stable color to the cyanoacrylate-based adhesive.
A method comprising:
- combining a cyanoacrylate monomer with a bleachable dye comprising a Michler's hydrol cation, or derivatized Michler's hydrol cation, paired with a non-nucleophilic anion to form a dye pair, the dye pair having a stable color, the cyanoacrylate monomer and dye pair forming a cyanoacrylate-based adhesive composition.
Dependencies are inferred from the claim text.