Novel compounds, process and marking systems

Details Novel compounds, process and marking systems Novel compounds, process and marking systems

1987-06-01

1989-01-03

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, 503223, B41M 516, B41M 518, B41M 522

Patent

active

047957360

ABSTRACT:
1-A-1-B-3-(2-R.sup.2 -4-N-R-N-R.sup.1 -aminophenyl)-3-(-4-R.sup.3 -phenylsulfonyl)prop-1-ene useful as color formers, particularly in transfer imaging, pressure-sensitive and thermal-responsive carbonless duplicating systems, are prepared by the interaction of the corresponding 1-A-1-B-ethene with the appropriate 2-R.sup.2 -4-N-R-N-4.sup.1 -benzaldehyde and the appropriate 4-R.sup.3 -benzenesulfinic acid in the presence of an acidic catalyst.

REFERENCES:
patent: 3957288 (1976-05-01), Lemahieu et al.
patent: 3958815 (1976-05-01), Poot et al.
patent: 4287336 (1981-09-01), Petitpierre

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