Benzimidazolone compound

Details Benzimidazolone compound Benzimidazolone compound

2008-05-13

2008-05-13

Shameem, Golam M. M. (Department: 1626)

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C548S301700, C548S302700, C548S304400, C548S304700

Reexamination Certificate

active

10534126

ABSTRACT:
There are provided benzimidazolone compounds that provide a plurality of hues from a single structural formula, and are useful as pigments that offer superior dispersibility in binder resins, as well as benzimidazolone compounds that are useful as pigments, and show minimal flocculation when pigments of two or more different hues are blended together to produced a desired hue.A benzimidazolone compound represented by a general formula (1) shown below.(wherein, R1, R2, R3and R4each represent, independently, a hydrogen atom, an alkyl group of 1 to 5 carbon atoms, or an alkoxy group of 1 to 5 carbon atoms, and R5and R6each represent, independently, an alkyl group of 1 to 5 carbon atoms).

REFERENCES:
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patent: 1201718 (2002-05-01), None
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patent: 2001-172520 (2001-06-01), None
W. Herbst, et al.;Industrial Organic Pigments Second, Completely Revised Edition; VCH Verlagsgesellschaft mbH, 1997; pp. 345-370 and cover sheet (15 Sheets.)/Discussed in the specification.

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