Polychromic substances and their use

Details Polychromic substances and their use Polychromic substances and their use

G - Physics

03

C

G03C 1/73 (2006.01) B41M 5/28 (2006.01) C07C 233/09 (2006.01) C09B 57/00 (2006.01) G03F 7/00 (2006.01) G03F 7/025 (2006.01)

Patent

CA 2712382

A compound which undergoes a colour change upon irradiation, and which has the general structure: X-C.ident.C--C.ident.C-Y-(CO)n-QZ wherein X is H, alkyl or -Y-(CO)n-QW; each Y is the same or a different divalent alkylene group; Q is O, S or NR; R is H or alkyl; W is H, alkyl or Z; each Z is the same or a different unsaturated alkyl group; and each n is 0 or 1.

Cette invention concerne un composé subissant un changement de couleur à l'application d'un rayonnement, lequel composé présente la structure générale X-C=C-C=C-Y-(CO)n-QZ, dans cette structure, X est H, alkyle ou -Y-(CO)n-QW; chaque Y représente un groupe alkylène divalent identique ou différent; Q est O, S ou NR; R est H ou alkyle; W est H, alkyle ou Z; chaque Z représente un même groupe alkyle insaturé identique ou différent; et chaque n est 0 ou 1.

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