Method and compositions for authenticating a product or a...

C - Chemistry – Metallurgy – 09 – D

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C09D 11/02 (2006.01) B41M 3/14 (2006.01) B41M 5/124 (2006.01) C09B 11/00 (2006.01) C09B 57/00 (2006.01) G03G 21/04 (2006.01)

Patent

CA 2218635

A method and compositions for authenticating a document or article comprises applying a mixture of a carrier, a leuco dye and an activator to a surface of a document or article, wherein the leuco dye and activator react in response to a rubbing force applied to the surface to change color and wherein the activator is at least one selected from the group consisting of amidophenol, anilides with hydroxyl groups and benzoamides with hydroxyl groups and authenticating the document or article by applying a rubbing force to the surface to effect a color change.

Cette invention concerne un procédé ainsi que des compositions d'authentification d'un document ou d'un article, lequel procédé consiste à appliquer, sur une surface du document ou de l'article, un mélange se composant d'un véhicule, d'un leuco-colorant et d'un activateur. En réponse à une force de frottement exercée à la surface, le leuco-colorant et l'activateur réagissent en changeant de couleur. L'activateur consiste en au moins un des éléments choisis dans le groupe suivant: amidophénol, anilides comportant des groupes hydroxyle et bentoamides comportant des groupes hydroxyle. Le document ou l'article est ensuite authentifié par application d'une force de frottement à sa surface de manière à entraîner un changement de couleur.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Method and compositions for authenticating a product or a... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and compositions for authenticating a product or a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and compositions for authenticating a product or a... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1759907

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.