Record receiver having plural interactive leaves or a colorless – Having a colorless color-former – developer therefor – or... – Identified color-former
Patent
1990-11-15
1993-03-02
Hess, B. Hamilton
Record receiver having plural interactive leaves or a colorless
Having a colorless color-former, developer therefor, or...
Identified color-former
427150, 427151, 503223, 503224, B41M 5136, B41M 530
Patent
active
051909090
ABSTRACT:
Pressure- or heat-sensitive record material utilizes a chromogenic material of the formula (I) (Ia or Ib): ##STR1## in which: one of A.sub.1 and A.sub.3 is an optionally-substituted carbocyclic aryl group and the other of A.sub.1 and A.sub.3 is either an optionally-substituted aryl group which is the same as or different from A.sub.1, or an optionally-substituted nitrogen-containing aromatic heterocyclic group, with the proviso that if both A.sub.1 and A.sub.3 are aryl groups, then at least one of A.sub.1 and A.sub.3 has a substituted amino or -N-heterocyclic substituent in the 4- position (relative to the bond joining A.sub.1 or A.sub.3 respectively to the remainder of the molecule);
REFERENCES:
patent: 3930108 (1975-12-01), Alsop
Sisti et al., "A Convenient General Method for the Preparation of Aldehydes.II", Journal of Organic Chemistry, Jan., 1962.
Akiyama et al., "Diphenylmethane and Triphenylmethane Dye . . . Near-Infrared", 9 Dyes and Pigments 459-66 (1988).
Gautier et al., "Condensation du Dimsylsodium Avec les . . . ", Tetrahedron Letters No. 12, 895-98 (1970).
Gilman et al., "Addition Reactions of Organometallic Compounds With Conjugated Systems", 63 Journal of the American Chemical Society 2046-48 (Aug. 1941).
Lutz et al., "The Effect of Configuration on the Reactivity of the Chalcone System", 77 Journal of the American Chemical Society 1814-18 (Apr., 1955).
Miocque et al., "Synthese et etude pharmacologique de derives du naphtyl-2 methylsulfoxyde", Chimie Therapeutique, 1972, Jul.-Aug., No. 4.
Azizian Farid
Shanton Kenneth J.
Hess B. Hamilton
The Wiggins Teape Group Limited
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