Claims
- 1. A cyanoacrylate composition having a cure indicator comprising
a cyanoacrylate component; and a dye dissolved in said cyanoacrylate component to provide a solution having a first color, wherein a resultant cured composition has a second color.
- 2. The composition of claim 1, wherein the first color is non-fluorescent and the second color is fluorescent.
- 3. The composition of claim 1, wherein said cyanoacrylate component comprises a monomeric structure represented by:
- 4. The composition of claim 3, wherein said cyanoacrylate component comprises a member selected from the group consisting of methyl cyanoacrylate, ethyl-2-cyanoacrylate, propyl cyanoacrylates, butyl cyanoacrylates, octyl cyanoacrylates, allyl cyanoacrylates, β-methoxyethyl cyanoacrylate, and combinations thereof.
- 5. The composition of claim 5, wherein said cyanoacrylate component comprises ethyl-2-cyanoacrylate.
- 6. The composition of claim 1, wherein said dye is selected from the group consisting of anthraquinone dyes, xanthene dyes, and combinations thereof.
- 7. The composition of claim 6, wherein said xanthene dyes comprises a fluoran dye selected from the group consisting of fluorescein, dibromofluorescein, diiodofluorescein, tetrabromofluorescein, tetrabromotetrachlorofluorescein, and combinations thereof.
- 8. The composition of claim 1, wherein said dye is present in an amount of about 50 ppm to about 1000 ppm based on an amount of said cyanoacrylate component.
- 9. The composition of claim 1, wherein said dye is present in an amount of about 100 to about 400 ppm based on an amount of said cyanoacrylate component.
- 10. The composition of claim 1, wherein said dye is present in an amount which substantially dissolves in said cyanoacrylate component.
- 11. The composition of claim 1, further comprising a member selected from the group consisting of accelerators, fillers, opacifiers, thickeners, viscosity modifiers, inhibitors, thixotropy conferring agents, and combinations thereof.
- 12. A cyanoacrylate composition comprising
a cyanoacrylate component; a member selected from the group consisting of accelerators, fillers, opacifiers, thickeners, viscosity modifiers, inhibitors, thixotropy conferring agents, and combinations thereof; and a fluorescent dye in an amount of about 100 to 400 ppm based on an amount of said cyanoacrylate component which imparts a first non-fluorescent color to said cyanoacrylate component, said fluorescent dye selected from the group consisting of fluorescein, dibromofluorescein, diiodofluorescein, tetrabromofluorescein, tetrabromotetrachlorofluorescein, and combinations thereof, wherein upon curing, the cyanoacrylate composition exhibits a fluorescent color.
- 13. The composition of claim 12, wherein said fluorescent dye comprises fluorescein.
- 14. A method of making a cyanoacrylate composition having a cure indicator comprising the steps of:
providing a composition of claim 1; and curing the cyanoacrylate component to form a cured composition having a second color.
- 15. The method of claim 14, wherein prior to the step of curing, the cyanoacrylate component has a non-fluorescent color.
- 16. The method of claim 14, wherein after the step of curing, the cured composition has a fluorescent color.
- 17. The method of claim 14, wherein in the step of providing a dye, the dye is a fluoran dye selected from the group consisting of fluorescein, dibromofluorescein, diiodofluorescein, tetrabromofluorescein, and tetrabromotetrachlorofluorescein.
- 18. A method of curing a polymeric composition comprising the steps of:
providing a composition of claim 1; and exposing the composition to conditions appropriate to effect cure; and detecting fluorescence of the cure indicator as an indication of substantial cure.
- 19. The method of claim 18, wherein the step of detecting fluorescence of the cure indicator as an indication of substantial cure further includes detecting a color change in the polymeric composition.
- 20. A method of detecting cure of an adhesive comprising the steps of:
providing a first article and a second article; providing, on a surface of the first article, a composition of claim 1;contacting a surface of the second article to the surface of the first article having the composition thereon; exposing the first and second articles to conditions appropriate to effect cure; and detecting fluorescence of the cured composition.
- 21. The method of claim 20, wherein the step of detecting fluorescence of the composition further includes detecting a color change in the composition as an indication of substantially full cure.
- 22. The method of claim 20, wherein in the step of providing a composition, the dye is a fluoran dye selected from the group consisting of fluorescein, dibromofluorescein, diiodofluorescein, tetrabromofluorescein, and tetrabromotetrachlorofluorescein.
RELATED U.S. APPLICATION DATA
[0001] This application is a continuation-in-part of U.S. Provisional Application No. 60/322,045, filed on Sep. 14, 2001, which is hereby expressly incorporated herein by reference in its entirety.
Provisional Applications (1)
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Number |
Date |
Country |
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60322045 |
Sep 2001 |
US |