Squarylium compounds and optical information recording medium us

Details Squarylium compounds and optical information recording medium us Squarylium compounds and optical information recording medium us

1990-03-16

1992-02-04

Ryan, Patrick J.

Stock material or miscellaneous articles

Circular sheet or circular blank

Recording medium or carrier

428 65, 428913, 369288, 346 76L, 3461351, 430495, 430948, B32B 302

Patent

active

050859099

ABSTRACT:
Squarylium compounds having the following formula (I), ##STR1## and an optical information recording medium comprising a substrate, and a recording layer formed on the substrate, comprising a squarylium compound having formula (II) are disclosed: ##STR2##

REFERENCES:
patent: 4673630 (1987-06-01), Katagiri et al.

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