Process for N,N,N',N'-tetraarylquinone diimonium salts

Details Process for N,N,N',N'-tetraarylquinone diimonium salts Process for N,N,N',N'-tetraarylquinone diimonium salts

1974-02-25

1976-06-08

Weinberger, Lorraine A.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C11914

Patent

active

039622908

ABSTRACT:
N,N,N',N'-tetraarylquinone diimonium salt infrared absorbers of improved heat stability are prepared by oxidizing an N,N,N',N'-tetraarylquinonediamine with a cupric salt, such as cupric chloride or cupric nitrate, rather than a silver salt as heretofore.

REFERENCES:
patent: 3637769 (1972-01-01), Susi

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