Naphtholactam dyes and optical recording medium containing these

Details Naphtholactam dyes and optical recording medium containing these Naphtholactam dyes and optical recording medium containing these

1989-08-21

1990-07-03

Ryan, Patrick

Stock material or miscellaneous articles

Circular sheet or circular blank

Recording medium or carrier

428 65, 428195, 428201, 428204, 4284111, 428913, 369288, 346762, 3461351, 430945, 548419, 548424, 548436, B32B 302

Patent

active

049390120

ABSTRACT:
Naphtholactam dyes of the formula ##STR1## where R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, n, p, Z.sup.1, Z.sup.2 and the rings A, B, C and D each have the meanings stated in the description, and an optical recording medium which contains one or more naphtholactam dyes and may contain a base.

REFERENCES:
patent: 3399191 (1968-08-01), Brack
patent: 3687972 (1972-08-01), Padmanathan
patent: 3963747 (1976-06-01), Schefczik et al.
patent: 4023185 (1977-05-01), Bloom et al.
patent: 4241355 (1980-12-01), Bloom et al.
patent: 4242689 (1980-12-01), Bloom et al.
patent: 4380769 (1983-04-01), Thomas et al.
patent: 4458004 (1984-07-01), Tanikawa
patent: 4460665 (1984-07-01), Kunikane et al.
patent: 4598151 (1986-07-01), Kuehlthau et al.
Ullman, Encyklopaedie Der Technischen Chemie, vol. 7, p. 216 and vol. 11, pp. 435-436 (1976).
J. Org. Chemi. USSR 18, 380-386 (1982); Mikhailenko et al.
Chem. Heterocycle. Comp. 9, 314-315 (1973); Shteinberg.
SU-A-613-692; 1979.
J. Vac. Sci. Tech. 18(1) Jan./Feb. 1981, pp. 100-104, Smith

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