C - Chemistry – Metallurgy – 08 – K
Patent
C - Chemistry, Metallurgy
08
K
C08K 5/17 (2006.01) A63B 37/00 (2006.01) A63B 37/12 (2006.01) C08K 5/13 (2006.01) C09D 5/00 (2006.01) G01N 31/22 (2006.01) A63B 43/00 (2006.01)
Patent
CA 2407492
The present invention provides an object, which, in its outer surface contains a color-forming composition which comprises a solvent-absorbing material that is generally a polymer; a color-former compounded with the solvent-absorbing material, where the color former functions as a metal chelating agent; and metal ions capable of forming a chelate complex with the color-former as the solvent-absorbing material absorbs a solvent, resulting in a detectable color change of the composition. The present invention also provides a method for indicating exposure of the color-forming composition to a solvent, wherein the color-forming composition is to be used on the outside surface of objects.
L'invention concerne un objet dont la surface extérieure contient une composition colorante, laquelle composition comprend un matériau, généralement un polymère, absorbant un solvant; un colorant composé avec le matériau absorbant un solvant, le colorant fonctionnant en tant qu'agent chélatant métallique; et des ions métalliques capables de former un complexe chélaté avec le colorant lorsque le matériau absorbant un solvant absorbe un solvant, le résultat étant un changement de couleur décelable de la composition. Cette invention concerne également un procédé destiné à l'exposition de la composition colorante à un solvant, la composition colorante étant utilisée sur la surface extérieure des objets.
Elhard Joel D.
Heggs Richard P.
Battelle Memorial Institute
Furman & Kallio
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