3,3'-Dichloro-4,4-diaminodiphenyl sulfonic acids

Details 3,3'-Dichloro-4,4-diaminodiphenyl sulfonic acids 3,3'-Dichloro-4,4-diaminodiphenyl sulfonic acids

1988-07-29

1990-01-09

Chan, Nicky

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

Organic compounds

Sulfonic acids or salts thereof

C07C14356

Patent

active

048929689

ABSTRACT:
The invention provides compounds having the formula I or II ##STR1## and their salts and hydrates, having high value as intermediates for dyestuff additives for pigment compositions and as intermediates for metal-containing pigments.

REFERENCES:
patent: 2346941 (1944-04-01), Reynolds
patent: 3776749 (1973-12-01), McKay et al.
patent: 3936496 (1976-02-01), Allan et al.

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