New indelible ink formulation

Details New indelible ink formulation New indelible ink formulation

1994-05-03

1995-09-12

Klemanski, Helene

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

106 23H, 106 23K, C09D 1102

Patent

active

054494001

ABSTRACT:
A stable indelible colored ink composition for invalidating bank notes or similar valuables by staining them permanently, comprises at least one of di- or tri-phenylguanidine.

REFERENCES:
patent: 4666519 (1987-05-01), Akiyama et al.
patent: 5279652 (1994-01-01), Kaufmann et al.

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