Pressure-sensitive recording material

Record receiver having plural interactive leaves or a colorless – Having a colorless color-former – developer therefor – or... – Identified organic electron acceptor other than phenolic resin

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Details

427151, 503221, 503222, 503225, 549227, B41M 516, B41M 522

Patent

active

047217022

ABSTRACT:
A pressure-sensitive recording material is described, comprising an electron-accepting compound, and at least one of electron-donating colorless dyes represented by formula (I) or formula (II) ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7, and R.sub.8 each represents a hydrogen atom, a lower alkyl group, a lower alkenyl group, a lower alkoxy group, or a halogen atom; and R.sub.9 and R.sub.10 each represents a hydrogen atom or a lower alkyl group, provided that at least one of R.sub.1, R.sub.2, R.sub.3, and R.sub.4 represents a lower alkyl group or a lower alkenyl group.

REFERENCES:
patent: 3837889 (1974-09-01), Hughes et al.
patent: 4169183 (1979-09-01), Mitchell
patent: 4390616 (1983-06-01), Sato et al.
patent: 4433156 (1984-02-01), Ishige et al.
patent: 4436920 (1984-03-01), Sato et al.

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