Azo dyes having a high solubility in petroleum fuels

Details Azo dyes having a high solubility in petroleum fuels Azo dyes having a high solubility in petroleum fuels

1975-10-24

1977-01-04

Warren, Charles F.

Fuel and related compositions

Liquid fuels

Aluminum or heavy metal, other than lead, containing

260191, 260205, C10L 122, C07C10704

Patent

active

040009858

ABSTRACT:
Azo dyes which are highly soluble in petroleum fuels. The dyes have the general formula ##STR1## where R.sub.1, R.sub. 2, R.sub. 3, and R.sub.4 are each H or CH.sub. 3 and R.sub. 5 is either 2-ethylhexyl or 2-ethylhexyloxypropyl. When R.sub. 5 is 2-ethylhexyl, then at least one of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 is CH.sub.3. When R.sub.5 is 2-ethylhexyloxypropyl, then each of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 is H, or at least one of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 is CH.sub.3 provided that R.sub.1 and R.sub.3 are not both CH.sub.3 at the same time that R.sub.2 and R.sub.4 are each H, and provided that R.sub.2 and R.sub.4 are not both CH.sub.3 at the same time that R.sub.1 and R.sub.3 are both H.

REFERENCES:
patent: 3096140 (1963-07-01), Gaetani

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