Dye mixtures containing an oil-soluble dye and an acid-extractab

Details Dye mixtures containing an oil-soluble dye and an acid-extractab Dye mixtures containing an oil-soluble dye and an acid-extractab

1987-07-14

1990-02-27

Higel, Floyd D.

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

Organic compounds

Azo

44 59, 534829, 534832, 534856, 534858, C09B 29085, C10L 110, C10L 122, C10M 132

Patent

active

049047655

ABSTRACT:
Dye mixtures contain an oil-soluble dye and a dye of the formula ##STR1## where D is phenyl which is unsubstituted or substituted by methyl or methoxy, R is hydrogen or methyl, R.sup.1 is hydrogen or C.sub.1 -C.sub.4 -alkyl and R.sup.2 is C.sub.3 - or C.sub.4 -alkyl.
The mixtures according to the invention are preferably used for coloring and marking mineral oil products.

REFERENCES:
patent: 3004821 (1961-10-01), Gano
patent: 3734857 (1973-05-01), Moiso et al.
patent: 3862120 (1975-01-01), Orelup
patent: 4210414 (1980-07-01), Hansen et al.

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