GB190214576A - Manufacture of Substantive Secondary Disazo-dyestuffs from Monoacetyl-para-diamidohydroquinonedialkylether or Amidohydroquinone-dialkylether. - Google Patents

Manufacture of Substantive Secondary Disazo-dyestuffs from Monoacetyl-para-diamidohydroquinonedialkylether or Amidohydroquinone-dialkylether.

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Publication number
GB190214576A
GB190214576A GB190214576DA GB190214576A GB 190214576 A GB190214576 A GB 190214576A GB 190214576D A GB190214576D A GB 190214576DA GB 190214576 A GB190214576 A GB 190214576A
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United Kingdom
Prior art keywords
naphthol
combining
dialkylether
monoacetyl
diazotizing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
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Inventor
Oliver Imray
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Individual
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Individual
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Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of GB190214576A publication Critical patent/GB190214576A/en
Expired legal-status Critical Current

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Abstract

14,576. Imray, O., [Farbwerke vorm. Meister, Lucius, & Br³ning]. June 30. Dyeing.-Blue to greenish-black polyazo dyes are formed on cotton by diazotizing upon the fibre and developing with the usual agents, such as #-naphthol, m-phenylenediamine, m-toluylenediamine, or resorcinol, the secondary disazo dyes which are produced from a monoacetyl-p-diamidohydroquinone-dialkylether by combining the diazo compound of one of these substances, such as the dimethyl- or diethyl-ether, with alpha-naphthylamine 6-, or 7-, monosulphonic acid, diazotizing the amidoazo compound thus obtained, and combining it with 2-naphthol-6-sulphonic acid, or with 2- amido-8-naphthol-6-sulphonic acid and finally splitting off the acetyl group. Alternatively, the dye may be produced by combining the diazo compound of monacetyl-1: 4-naphtbylenediamine-6- or 7-, monosulphonic acid with 2-naphthol-6-sulphonic acid, eliminating the acetyl group and further diazotizing the product and combining it with amidohydroquinonedialkylether.
GB190214576D 1902-06-30 1902-06-30 Manufacture of Substantive Secondary Disazo-dyestuffs from Monoacetyl-para-diamidohydroquinonedialkylether or Amidohydroquinone-dialkylether. Expired GB190214576A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB190214576T 1902-06-30

Publications (1)

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GB190214576A true GB190214576A (en) 1903-05-21

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GB190214576D Expired GB190214576A (en) 1902-06-30 1902-06-30 Manufacture of Substantive Secondary Disazo-dyestuffs from Monoacetyl-para-diamidohydroquinonedialkylether or Amidohydroquinone-dialkylether.

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GB (1) GB190214576A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2612496A (en) * 1948-04-02 1952-09-30 Gaspar Acid azo dyes
US2612448A (en) * 1948-04-02 1952-09-30 Gaspar Photographic elements containing azo dyes and process using them

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2612496A (en) * 1948-04-02 1952-09-30 Gaspar Acid azo dyes
US2612448A (en) * 1948-04-02 1952-09-30 Gaspar Photographic elements containing azo dyes and process using them

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