Pigment composition based on C.I. pigment yellow 191

Details Pigment composition based on C.I. pigment yellow 191 Pigment composition based on C.I. pigment yellow 191

2008-02-12

2010-11-02

Green, Anthony J (Department: 1793)

Compositions: coating or plastic

Materials or ingredients

Pigment, filler, or aggregate compositions, e.g., stone,...

C106S031780, C106S031790, C106S496000, C106S498000, C430S007000, C430S108230, C524S106000, C534S781000

Reexamination Certificate

active

07824488

ABSTRACT:
The invention relates to a pigment composition based on P.Y. 191 of the formula (1) containing 0.05 to 30 mol %, based on the sum of P.Y. 191 and a further yellow colorant, of at least one further yellow colorant of the formula (2) and/or of C.I. Pigment Yellow 100 in which R1, R2, R3 and R4 are each independently hydrogen, halogen, —CH3, —NO2, or NH—R6 where R6 is C1-C4-alkyl; R5 is methyl or carboxyl, and where the compound of the formula (2) is not C.I. Pigment Yellow 191.

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Co-pending U.S. Appl. No. 12/671,044 by ACS et al., filed Jan. 28, 2010.
PCT International Search report and Preliminary Report on Patentability for PCT/EP2008/001037, mailed May 28, 2008.
English Translation of PCT International Preliminary report on Patentability for PCT/EP2008/001037, mailed Sep. 17, 2009.
English abstract for DE 2616981, Oct. 27, 1977.

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