2-[[1-[[(2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)amino]carbon...

Details 2-[[1-[[(2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)amino]carbon... 2-[[1-[[(2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)amino]carbon...

2011-04-12

2011-04-12

Powers, Fiona T (Department: 1626)

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

Organic compounds

Azo

C534S705000, C534S887000, C106S496000, C524S093000

Reexamination Certificate

active

07923540

ABSTRACT:
The present invention is directed to 2-[[1-[[(2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)amino]carbonyl]-2-oxo-propyl]azo]-benzoic acid (C.I. Pigment Yellow 151): (I), characterized by a ΔE* (black/white) in masstone below 22.0±0.7, a process for its preparation and its use for pigmenting macromolecular organic materials of natural or synthetic origin. The pigment has high opacity and high color strength.

REFERENCES:
patent: 4024124 (1977-05-01), Ribka
patent: 4906735 (1990-03-01), Hunger
patent: 6835242 (2004-12-01), Nickel et al.
patent: 08-269347 (1996-10-01), None
Machine Translation of JP 08-269347, Oct. 15, 1996.

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