Derivatives of dianhydrides as vinyl color formers

Details Derivatives of dianhydrides as vinyl color formers Derivatives of dianhydrides as vinyl color formers

C - Chemistry, Metallurgy

09

B

260/366.1, 260/3

C09B 57/00 (2006.01) B41M 5/145 (2006.01) B41M 5/327 (2006.01) C07D 307/89 (2006.01) C07D 493/04 (2006.01)

Patent

CA 1072963

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 and T-. T, 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 materials and manifold marking systems. Because of light absorption characteristics, selected compounds of this invention are especially useful where machine readability and machine copiability are important.

238928

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