Record receiver having plural interactive leaves or a colorless – Having a colorless color-former – developer therefor – or... – Having constituent defined in terms of melting temperature
Patent
1993-05-28
1995-08-08
Hess, B. Hamilton
Record receiver having plural interactive leaves or a colorless
Having a colorless color-former, developer therefor, or...
Having constituent defined in terms of melting temperature
503209, 503210, 503211, 503212, 503216, 503217, 503225, B41M 526
Patent
active
054398690
ABSTRACT:
New thermoreactive recording materials contain a mixture containing at least one specifically modified bisphenol carboxylic acid and at least one basic compound. They are distinguished by good stabilization of the color even upon extended storage, good light stabilities and excellent stabilities to water, plasticizers, greases and ingredients of text-marking pens.
REFERENCES:
patent: 3565848 (1971-02-01), Hiroshima et al.
patent: 4134847 (1979-01-01), Oda et al.
patent: 4749680 (1988-06-01), Umeda et al.
patent: 4759797 (1988-07-01), Umeda et al.
patent: 4784692 (1988-11-01), Umeda et al.
patent: 4806521 (1989-02-01), Umeda et al.
Klug Gunter
Ooms Pieter
Rasp Christian
Bayer Aktiengesellschaft
Gerstenzang William C.
Hess B. Hamilton
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