GB190719479A - Improvements in the Manufacture and Production of Azo Colouring Matters. - Google Patents

Improvements in the Manufacture and Production of Azo Colouring Matters.

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Publication number
GB190719479A
GB190719479A GB190719479DA GB190719479A GB 190719479 A GB190719479 A GB 190719479A GB 190719479D A GB190719479D A GB 190719479DA GB 190719479 A GB190719479 A GB 190719479A
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GB
United Kingdom
Prior art keywords
alkali
sulphonic acid
zinc
salts
dye
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
Application number
Inventor
James Yate Johnson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of GB190719479A publication Critical patent/GB190719479A/en
Expired legal-status Critical Current

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Abstract

19,479. Johnson, J. Y., [Badische Anilin & Soda Fabrik]. Aug. 30. Dyes, artificial.-Zinc-alkali salts of the disazo dye from 2 : 6-tetrazophenol-4-sulphonic acid and #-naphthol, described in Specification No. 2397, A.D. 1901, are produced by treating the alkali salts of the colouring matter with oxide, hydroxide, carbonate, or other salt of zinc ; or the free acid dye-stuff is treated with one of these compounds in presence of alkali or alkali salt ; or the dyecomponeuts are coupled in presence of one of these compounds. The tetrazophenol sulphonic acid may be prepared from diaminophenol sulphonic acid or from diaminochlorbenzene sulphonic acid, as describe in Specification No. 16,811, A.D. 1901. In the latter case, the tetrazochlorbenzene sulphonic acid is treated with, say, carbonate or hydroxide of zinc to replace chlorine by hydroxyl, and the solution thus obtained is combined with alkali #-naphthol. These double salts are more soluble than the alkali salts or the free acid dye.
GB190719479D 1907-08-30 1907-08-30 Improvements in the Manufacture and Production of Azo Colouring Matters. Expired GB190719479A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB190719479T 1907-08-30

Publications (1)

Publication Number Publication Date
GB190719479A true GB190719479A (en) 1908-02-27

Family

ID=32436028

Family Applications (1)

Application Number Title Priority Date Filing Date
GB190719479D Expired GB190719479A (en) 1907-08-30 1907-08-30 Improvements in the Manufacture and Production of Azo Colouring Matters.

Country Status (1)

Country Link
GB (1) GB190719479A (en)

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