Indandione bis-azomethine pigments

Details Indandione bis-azomethine pigments Indandione bis-azomethine pigments

1977-01-18

1978-10-24

Curtis, Allen B.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

542420, C09B 5500, C07C11906, C07D23972, C07D28302

Patent

active

041221176

ABSTRACT:
An indandione pigment having high tinting strength and good weatherability and light fastness of the formula ##STR1## WHEREIN A is a phenylene or naphthylene group optionally substituted by a halogen atom, a lower alkyl group, a lower alkoxy group or a nitro group; n is 2 or 1; and B represents a direct bond or an n valont aromatic radical.
The pigment mentioned above can be prepared by reacting an indandione derivative of the formula ##STR2## (E is an alkoxy group with 1 to 3 carbon atoms, or an amino group; and G is an oxygen atom, or ##STR3## in which Q is a lower alkyl group, and Q.sub.2 is a lower alkyl group or a phenyl group) with an amino compound of the formula H.sub.2 N--B--NH.sub.2 ]n-1.

REFERENCES:
gudriniece et al., Chem. Abst. 78 (1973), No. 110986.
Gudriniece et al., Chem. Abst. 80 (1974), No. 27015.
Ozolt et al., Chem. Abst. 77 (1972), No. 88122.
Belevich et al., Chem. Abst. 78 (1973), No. 135921.
Ando et al., Chem. Abst. 83 (1975), No. 44726.
Ando et al., Chem. Abst. 84 (1976), No. 166238.
Takaki et al., Chem. Abst. 85 (1976), No. 34622.
Belevich et al., Chem. Abst. 81 (1974), No. 37506.

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