Patent EP0095975A1 successfully refreshed from Google Patents.
EP0095975A1
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EP
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Concentrated solutions of 1,4-dialkyl-arylamino-anthraquinone dyestuffs for the colouring of petroleum products
Assignee: BASF Italia SpA
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Filing: 1983-05-25
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Granted: —
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Expires: 2003-05-25
Abstract
Abstract The invention relates to concentrated solutions of dyestuffs for petroleum products and organic solvents, comprising an organic diluent phase and from 30 to 50% by weight of one or more 1.4-dialkyl-arylamino-anthraquinone dyes, wherein the two alkyl radicals, equal to or different from each other, contain from 8 to 20 carbon atoms and are obtained by reacting quinizarin of leucoquinizarin or mixtures thereof with one or more para-alkylanilines.
Inventors
- 👤 Ugo Marangelli
- 👤 Giancarlo Ciocci
- 👤 Sisto Sergio Papa
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 01:06
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/003; C09; C09B; C09B1/00; C09B1/16; C09B1/20; C09B1/26; C09B1/32; C09B1/325; C09B67/00; C09B67/0071; C09B67/0083
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
81 words
- Concentrated colouring solutions of blue-green tone for liquid petroleum products and organic solvents consisting of an organic diluent phase and of from 30 to 50% by weight of an anthraquinonic compound or of a mixture of anthraquinonic compounds having general formula: where in: R 1 and R 2 , equal to or different from each other, represent alkyl radicals having from 8 to 20 carbon atoms, obtained by reacting quinazarin or leuco-quinizarin or mixtures thereof with one or more para-alkulanilines.
Claim 2
Dependent Claim
81 words
- Concentrated colouring solutions of blue-green tone for liquid petroleum products and organic solvents consisting of an organic diluent phase and of from 30 to 50% by weight of an anthraquinonic compound or of a mixture of anthraquinonic compounds having general formula: where in: R 1 and R 2 , equal to or different from each other, represent alkyl radicals having from 8 to 20 carbon atoms, obtained by reacting quinazarin or leuco-quinizarin or mixtures thereof with one or more para-alkulanilines.
Claim 3
Dependent Claim
32 words
- Concentrated solutions, according to claim 1, wherein the organic diluent phase consists of one or more solvents selected from the group consisting of alpha- and beta-methylnaphthalene, para-nonylphenol, nitrobenzene,toluene, xylene, aliphatic alcohols.
Claim 4
Dependent Claim
19 words
- Petroleum products and solvents, when coloured with colouring concentrated solutions, as claimed in the herein above preceding claims.
References Cited (Backward Citations)
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