Fluorescent pigments

Details Fluorescent pigments Fluorescent pigments

2005-09-20

2005-09-20

Powers, Fiona T. (Department: 1626)

Organic compounds -- part of the class 532-570 series

Organic compounds

Azo

C534S822000, C106S031640, C106S496000, C524S108000, C524S190000

Reexamination Certificate

active

06946550

ABSTRACT:
Azo compounds of formula (I), wherein X stands for halogen, in particular for chlorine, or C1-C4alkoxy, in particular for methoxy, Y stands for —CH2— or —O—, R1and R2, independently from each other, stand for hydrogen, C1-C8alkyl, or C6-C14aryl, which may be substituted up to three times with C1-C8alkyl, C1-C4alkoxy or halogen, a process for their preparation and their use as fluorescent compounds, in particular as solid fluorescent compounds, such as for special effect printing, sectrity printing or in the opto-electronic field.

REFERENCES:
patent: 5863459 (1999-01-01), Merchak et al.
patent: 5904878 (1999-05-01), Merchak et al.
patent: 0982372 (2000-03-01), None
patent: 0982373 (2000-03-01), None
A. Fadda et al., Indian Journal of Textile Research, vol. 9, Sep. 1994, pp. 115-117.

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