Production of an azine dye having excellent heat- and light-resi

Details Production of an azine dye having excellent heat- and light-resi Production of an azine dye having excellent heat- and light-resi

1991-07-15

1994-01-25

Berch, Mark L.

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

Organic compounds

Nitrogen attached directly or indirectly to the purine ring...

544347, C07D24146, C09B 1702

Patent

active

052817091

ABSTRACT:
Disclosed is the process for the preparation of dye having excellent heat- and light-resistance. The dye can preferably be employed as a colorant for heat-resistant resin materials such as polyamide, as a colorant and a charge control agent for an electrostatic image developing toner (i.e. positively chargeable toner), and as a colorant for writing ink composition having a good aging stability. The process of the present invention comprising (a) mixing crude azine dye, produced by condensation of anilines or aniline hydrochlorides with nitrobenzenes in the presence of catalysts, with organic solvents; and (b) extracting by-products from the crude azine dye mixture.

REFERENCES:
patent: 1896244 (1933-02-01), Merz
patent: 2045069 (1936-06-01), Conzetti
patent: 2058666 (1936-10-01), Conzetti
patent: 2328759 (1943-09-01), Wahl
patent: 4359577 (1982-11-01), Granzon
patent: 4376859 (1993-03-01), Maurer
patent: 4383859 (1983-05-01), Moore
patent: 4624709 (1986-11-01), Otsaka
patent: 4775754 (1988-10-01), Vogel et al.
patent: 4927538 (1990-05-01), Senshu
Finkenauer, Chem. Abs. 66, 3824K(1966).
Rao, J. Indian Chem. Soc. 62, 172-3 (1985).
Derwent Abstract 77-83478Y "Acid Alkali Amine Aromatic Azine Condensation Dye...", (1977).
Derwent Abstract 77-91266Y "Alkali Aqueous Dye Extract...", (1977).
Translation of DE 3,615571 (1987).
Translation of DE 86,109 (1896).
Translation of DE 90,212 (1896).

Affiliated with

Also associated with

Rating

Production of an azine dye having excellent heat- and light-resi does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Production of an azine dye having excellent heat- and light-resi, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Production of an azine dye having excellent heat- and light-resi will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-728884