GB189812119A - Manufacture of Sulphonic Acids of the Naphthalene Series, and of Colouring Matters therefrom. - Google Patents

Manufacture of Sulphonic Acids of the Naphthalene Series, and of Colouring Matters therefrom.

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Publication number
GB189812119A
GB189812119A GB189812119DA GB189812119A GB 189812119 A GB189812119 A GB 189812119A GB 189812119D A GB189812119D A GB 189812119DA GB 189812119 A GB189812119 A GB 189812119A
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GB
United Kingdom
Prior art keywords
dyes
sulphonic acid
sulphonic
produced
acids
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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LEVINSTEIN Ltd
Original Assignee
LEVINSTEIN Ltd
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by LEVINSTEIN Ltd filed Critical LEVINSTEIN Ltd
Application granted granted Critical
Publication of GB189812119A publication Critical patent/GB189812119A/en
Expired legal-status Critical Current

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Abstract

12,119. Levinstein, I., Herz, R., and Levinstein (Limited). May 28. alpha1alpha2-Naphthylenediamine-#3 (#4)-sulphonic acid is produced by reducing the azo colouring-matters resulting from the combination of a diazo compound, such as diazobenzene, with alpha1-naphthylamine-#3 or #4-sulphonic acid, or the mixture of the two obtained from #-naphthalene sulphonic acid. Monoacetyl -alpha1alpha2- naphthylenediamine-#3 (#4)-sulphonic acid is produced either by acetylating the foregoing diamine sulphonic acid, or by acetylating the azo dyes referred to above and then reducing them.] Dyes, artificial.-Azo dyes are produced by diazotizing acetylnaphthylenediamine sulphonic acid and combining it with amines, diamines, phenols, amidophenols, or oxyphenols of the benzene or naphthalene series, or sulphonic or carboxylic acids thereof. The most valuable combinations are those prepared from p-xylidine, monoacetyl- or monooxalyl-m-phenylenediamine or -m-tolylenediamine, amidocresol ether, alpha-naphthylamine, alpha1-naphthylamine-#3 or #4-sulphonic acid, amidonaphthol ether, or amidonaphthol sulphonic acid-gamma. These acetylamidoazo dyes are rediazotized and combined with naphthol sulphonic acids, dioxynaphthalene sulphonic acids, amidonaphthol sulphonic acids, and the like, whereby dyes are obtained which yield blue to black shades on animal and vegetable fibres. When saponified with caustic soda these dyes possess a greater intensity and a stronger affinity for vegetable fibres, and they may be diazotized upon the fibre and developed with dye-stuff components. The Provisional Specification relates also to the production of azo dyes by diazotizing alpha1alpha4- naphthylenediamine-#3 (or #4)-sulphonic acid and combining the amidodiazo compound with dye-stuff components. The amidoazo dyes thus formed are further diazotized and combined with dye-stuff components, whereby blue to black dyes for unmordanted cotton are produced.
GB189812119D 1898-05-28 1898-05-28 Manufacture of Sulphonic Acids of the Naphthalene Series, and of Colouring Matters therefrom. Expired GB189812119A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB189812119T 1898-05-28

Publications (1)

Publication Number Publication Date
GB189812119A true GB189812119A (en) 1899-02-25

Family

ID=32416091

Family Applications (1)

Application Number Title Priority Date Filing Date
GB189812119D Expired GB189812119A (en) 1898-05-28 1898-05-28 Manufacture of Sulphonic Acids of the Naphthalene Series, and of Colouring Matters therefrom.

Country Status (1)

Country Link
GB (1) GB189812119A (en)

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