Di-vinyl color formers

Details Di-vinyl color formers Di-vinyl color formers

C - Chemistry, Metallurgy

09

B

260/306, 260/366

C09B 57/00 (2006.01) B41M 5/145 (2006.01) B41M 5/327 (2006.01) C07D 209/36 (2006.01) C07D 307/88 (2006.01) C07D 307/92 (2006.01) C07D 313/00 (2006.01) C07D 313/20 (2006.01) C07D 491/04 (2006.01)

Patent

CA 1055942

Abstract of the Disclosure A chromogenic compound of normally colorless form is disclosed having the following structural formula: Image wherein A and B can be Image . X, Y and Z can be, among several others, hydrogen, alkyl, alkoxy, aryl, and heterocyclic, substituted and unsubstituted; and E can be a broad family of aromatic and heterocyclic structures. The compound is eligible for use in pressure-sensitive record mate- rials and manifold marking systems. Because of light absorption charac- teristics, selected compounds of this invention are especially useful where machine readability and machine copiability are important. -1-

238991

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