Lactam-based pigments and the use thereof in the production...

Details Lactam-based pigments and the use thereof in the production... Lactam-based pigments and the use thereof in the production...

2006-04-04

2006-04-04

Green, Anthony J. (Department: 1755)

Compositions: coating or plastic

Materials or ingredients

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

C106S493000, C524S087000, C524S104000, C524S105000, C524S106000

Reexamination Certificate

active

07022177

ABSTRACT:
The present invention relates to novel pigments of formula(1), wherein R1is hydrogen or C1–C12alkyl, R2is hydrogen, —CN, —COO-aryl, —COO-heteroaryl, —CONH-aryl or —CONH-heteroaryl, and R3is the radical of a heteroaromatic compound of formulaor R2and R3together form a radical of formulawherein R4, R5, R6and R7are defined herein and to a process for the preparation of those pigments, and to their use in the production of coloured plastics or polymeric colour particles.

REFERENCES:
patent: 4129455 (1978-12-01), Thompson et al.
patent: 4198516 (1980-04-01), Merlo et al.
patent: 5626633 (1997-05-01), Roschger
patent: 1323629 (1993-10-01), None

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