Stock material or miscellaneous articles – Circular sheet or circular blank – Recording medium or carrier
Patent
1989-08-23
1991-07-02
Ryan, Patrick J.
Stock material or miscellaneous articles
Circular sheet or circular blank
Recording medium or carrier
428 65, 428195, 428913, 430945, 346 76L, 3461351, 3692751, 369288, B32B 302
Patent
active
050284673
ABSTRACT:
A dithiolate metal complex compound having formula [I] ##STR1## wherein each R individually represents an alkyl group having 1 to 6 carbon atoms, a halogen, a halogenated alkyl group having 1 to 6 carbon atoms, an amino group which may be substituted with 1 or 2 alkyl groups each having independently 1 to 4 carbon atoms, or a trifluoromethyl group, M represents a transition metal selected from the group consisting of Ni, Pd, Pt, Co, Cu and Mn, n is an integer of 0 to 4, and A represents the counter cation of the complex compound, a method of producing the same, and an optical information recording medium comprising a recording layer comprising a polymethine dye and the dithiolate metal complex compound are disclosed.
REFERENCES:
patent: 4707425 (1987-11-01), Sasagawa et al.
patent: 4832992 (1989-05-01), Yabe et al.
patent: 4860273 (1989-08-01), Sawano et al.
Maruyama Shoji
Nagai Kazukiyo
Satoh Tsutomu
Ricoh & Company, Ltd.
Ryan Patrick J.
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