Diazo compounds, a process for their preparation and their use a

Details Diazo compounds, a process for their preparation and their use a Diazo compounds, a process for their preparation and their use a

1989-08-22

1990-06-19

Higel, Floyd D.

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

Organic compounds

Azo

106447, 106448, 106494, 106483, 106498, 534573, 534575, 534581, 534582, 534887, C09B 3522, C09B 35035, D06P 118, D06P 144

Patent

active

049355023

ABSTRACT:
When a diamine of the formula ##STR1## in which n is 1 to 4, is bis-diazotized and the resulting bis-diazo compound is coupled with 2 moles of one or more coupling components of the formula ##STR2## in which R.sup.1 is hydrogen, chlorine, bromine, methyl or methoxy and R.sup.2 is hydrogen or, if R.sup.1 is hydrogen, also methyl or ethyl, disazo compounds are obtained which are colorants. Due to their high fastness to light and to migration and their heat stability and dispersibility, these compounds are useful for pigmenting high molecular weight materials, especially polyolefins.

REFERENCES:
patent: 3109842 (1963-11-01), Schilling et al.
patent: 4169091 (1979-09-01), Kuhne et al.

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