Photochromic aziridine recording media

Details Photochromic aziridine recording media Photochromic aziridine recording media

1978-12-28

1980-12-02

Louie, Jr., Won H.

Radiation imagery chemistry: process, composition, or product th

Dye image from radiation sensitive dye or dye former by dry...

Composition or product

430961, 430962, 430 19, G03C 152

Patent

active

042372119

ABSTRACT:
Photochromic aziridines of the formula ##STR1## wherein R.sub.1 and R.sub.2 taken separately are hydrogen, lower alkyl, phenyl, or ortho or para lower alkyl or lower alkoxy substituted phenyl, and wherein R.sub.1 and R.sub.2 taken together are alkylene having 4 to 7 carbon atoms, inclusive, are vapor deposited on a substrate, followed by application of a barrier coating which is substantially oxygen-impermeable to thereby provide a thermally stable optically erasable recording medium.

REFERENCES:
patent: B283124 (1975-01-01), Berkes et al.
patent: 3042515 (1962-07-01), Wainer
patent: 3320067 (1967-05-01), Taylor
patent: 3442649 (1969-05-01), Rasch et al.
patent: 3609165 (1971-09-01), Heine
patent: 3785820 (1974-01-01), Inoue et al.
patent: 3795529 (1974-03-01), Cartmell et al.
patent: 3894874 (1975-07-01), Schleigh
patent: 3984177 (1976-10-01), Trozzolo
patent: 4018604 (1977-04-01), Bachman

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