Epindolidione pigments

Details Epindolidione pigments Epindolidione pigments

2007-12-11

2007-12-11

Morris, Patricia L. (Department: 1625)

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

Reexamination Certificate

active

10467041

ABSTRACT:
The epindolidione compounds of the general formula (I)in which A′, R2and A have the meanings given in claim1,are outstanding pigments which are notable in particular for better migration, light and solvent fastnesses, better heat stability and enhanced colouring power and also better dispersibility and capability to be brought into pigment form.The invention also relates to a process for preparing these epindolidione compounds and to their use a colorants for colouring polymer compositions or paper pulps, as colorants in electrophotographic toners and developers, as colorants in ink-jet inks, as colorants in the coatings industry, as colorants for textile printing or as a printing ink in the graphical industry, as colorants in cosmetics.

REFERENCES:
patent: 4142890 (1979-03-01), Bloom et al.
patent: 5523387 (1996-06-01), Goldmann et al.
patent: 6277536 (2001-08-01), Piastra et al.
patent: 6515123 (2003-02-01), Kaul et al.
patent: 0 766 498 (1997-04-01), None
patent: 2 087 419 (1982-05-01), None
English abstract for JP 10-130554, May 19, 1998.
English abstract for JP 10-189246, Jul. 21, 1998.
English abstract for JP 11-097179, Apr. 9, 1999.
English abstract for JP 11-130972, May 19, 1999.

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