Process for azo pigments

Details Process for azo pigments Process for azo pigments

1979-01-05

1980-08-12

Shaver, Paul F.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C09B 2904

Patent

active

042172730

ABSTRACT:
A pigment modifier composition for azo pigments is prepared in situ by chlorination of 2-hydroxy-3-naphthoic acid with a hypochlorite such that up to 10% of the acid is converted into 1-chloro-2-hydroxy-3-naphthoic acid.

REFERENCES:
patent: 3520870 (1970-07-01), Dombroski

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