Novel compounds, processes and marking systems

Details Novel compounds, processes and marking systems Novel compounds, processes and marking systems

1988-03-11

1989-09-26

Hess, Bruce H.

Record receiver having plural interactive leaves or a colorless

Having a colorless color-former, developer therefor, or...

Identified color-former

427151, 428913, 428914, 503218, 503223, B41M 516, B41M 518, B41M 520

Patent

active

048700509

ABSTRACT:
Bis{[1-(2-A-2-B)ethenyl]}[2-R.sup.2 -4-X-phenyl-or 1-(2-R.sup.2 -4-X-phenyl) ethenyl]methanes useful as color formers, particularly in transfer imaging, pressure sensitive and thermal-responsive carbonless duplicating systems, are prepared by the interaction of two molecular proportions of the corresponding 1-A-1-B-ethene with the appropriate 2-R.sup.2 -4-X-phenyl-(CH.dbd.CH).sub.n --CHO presence of an acidic catalyst.

REFERENCES:
patent: 3928685 (1975-12-01), Alsop
patent: 4183553 (1980-01-01), Petitpierre

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