专利名称：Concentrated coloring solutions of a blue
tinge based on mixture of 1.4- dialkyl-anthraquinones for the coloring ofpetroliferous products
发明人：Ugo Marangelli,Giancarlo Ciocci,Sisto S. Papa申请号：US06/152087申请日：19800521公开号：US04303407A公开日：19811201
摘要：The present invention relates to concentrated solutions in organic solvents ofspecial mixtures of 1-4-dialkyl-amino-anthraquinone dyes particularly useful for thecoloring of hydrocarbons. The solutions of this invention are particularly useful for thecoloring of hydrocarbons obtained by distillation of crude oil such, for example, as petrolkerosene and gas oil. The invention also includes the preparation of the aforementionedconcentrated solutions, including direct preparation of the solutions during the synthesisphase of the anthraquinone dyes.
申请人：AZIENDE COLORI NAZIONALI AFFINI ACNA S.P.A.
代理机构：Morgan, Finnegan, Pine, Foley & Lee
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