Patent · US Active

Pigment composition based on C.I. pigment yellow 191

US7824488B2 · kind B2 · utility

2Cited by

18References

12Claims

0Family size

Assignee

Clariant Finance (BVI) Limited · VG

Inventors

Till Borchert · Rixheim, FR
Martin Schmidt · Frankfurt am Main, DE
Arpad Acs · Schwalbach, DE
Ruediger Jung · Kelkheim, DE

Key dates

Filing date	Feb 12, 2008
Grant date	Nov 2, 2010
Priority date	—
Expiry date	Feb 12, 2028

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09B67/0051
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.