C - Chemistry – Metallurgy – 09 – B
Patent
C - Chemistry, Metallurgy
09
B
260/272, 260/272
C09B 57/00 (2006.01) C07D 471/04 (2006.01) C09B 23/00 (2006.01) C09B 69/06 (2006.01) G03C 1/73 (2006.01)
Patent
CA 1211112
-0- OXOINDOLIZINE AND OXOINDOLIZINIUM DYES AND PROCESSES FOR THEIR PREPARATION ABSTRACT OF THE DISCLOSURE Oxoindolizine and oxoindolizinium dyes are novel compounds useful in imaging, such as laser recording and reading. These dyes are formed by (1) the reaction of a cyclopropenone and a pyridine com- pound, (2) by reaction of (a) color-forming couplers with (b) reaction products from the reaction of cyclopropenones with pyridine compounds, or (3) by condensation reactions of indol zinols, indoli- zinones, and indolizinium ions.
403778
Bender Steven L.
Fletcher George L. Jr.
Wadsworth Donald H.
Eastman Kodak Company
Gowling Lafleur Henderson Llp
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