Monoazo lake pigment suitable for use in printing ink and proces

Details Monoazo lake pigment suitable for use in printing ink and proces Monoazo lake pigment suitable for use in printing ink and proces

1992-09-09

1994-02-15

Higel, Floyd D.

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

106 22R, 106 23R, 106 23K, 106493, 106494, 534563, 534564, 534565, 534863, C09D 1102, C09D 1700, C09B 6300, C09B 2920

Patent

active

052862879

ABSTRACT:
A monoazo lake pigment and a process for its production; the monoazo lake pigment excellent in clearness, transparency, gloss and tinting strength is obtained by coupling a diazo component which is an aromatic amine having a sulfonic acid group with a coupler component which contains .beta.-naphthol or .beta.-oxynaphthoic acid and adding a laking agent during or after the coupling reaction, the coupler component further containing 0.1 to 30 mol %, based the coupler component, of a compound of the following formula, ##STR1## wherein n=1 or 2.

REFERENCES:
patent: 2521908 (1950-09-01), Glass et al.
patent: 4115055 (1978-09-01), Dieter et al.
patent: 4154577 (1979-05-01), Miederer et al.
patent: 4767844 (1988-08-01), Ando et al.

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