Disazo pyrazolone pigment compositions

Details Disazo pyrazolone pigment compositions Disazo pyrazolone pigment compositions

1989-05-23

1990-08-07

Lieberman, Paul

Compositions: coating or plastic

Materials or ingredients

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

534561, 534740, 534748, 534728, C09B 2700

Patent

active

049465082

ABSTRACT:
Disazo pyrazolone pigments are provided which have improved properties achieved by incorporating certain azomethine compounds. The pigment is prepared by reacting a primary amine terminated alkylene oxide polymer and acetoacetanilide or substituted acetoacetanilide to form an azomethine coupler, and subsequently co-reacting the azomethine coupler and a pyrazolone coupler with tetrazotized 3,3'-dichlorobenzidine or tetrazotized o-dianisidine. The pigment is useful in printing ink, plastics and paints.

REFERENCES:
patent: 3567707 (1971-03-01), Neave et al.
patent: 3671281 (1972-06-01), Doss
patent: 4113721 (1978-09-01), Hauser et al.
patent: 4341701 (1982-07-01), Pechey et al.
patent: 4643770 (1987-02-01), Hayes

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