GB190509547A - Improvements in the Manufacture and Production of Colouring Matter of the Naphthalene Series - Google Patents

Improvements in the Manufacture and Production of Colouring Matter of the Naphthalene Series

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Publication number
GB190509547A
GB190509547A GB190509547DA GB190509547A GB 190509547 A GB190509547 A GB 190509547A GB 190509547D A GB190509547D A GB 190509547DA GB 190509547 A GB190509547 A GB 190509547A
Authority
GB
United Kingdom
Prior art keywords
dye
manufacture
production
naphthalene series
colouring matter
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 GB190509547A publication Critical patent/GB190509547A/en
Expired legal-status Critical Current

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Abstract

9547. Johnson, J. Y., [Badische Anilin & Soda Fabrik]. May 5. Dyes, artificial.-A dye, dyeing wool orange-red shades which are turned reddish-black on treatment with bichromate, is produced by heating naphthazarin in aqueou.s solution with more than two molecular proportions of caustic soda, praferably while passing air through the mixture. When printed on cotton with chromium acetate, the dye gives a very fast full black. The dye forms a soluble compound with sodium bisulphite.
GB190509547D 1905-05-05 1905-05-05 Improvements in the Manufacture and Production of Colouring Matter of the Naphthalene Series Expired GB190509547A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB190509547T 1905-05-05

Publications (1)

Publication Number Publication Date
GB190509547A true GB190509547A (en) 1905-05-25

Family

ID=32196049

Family Applications (1)

Application Number Title Priority Date Filing Date
GB190509547D Expired GB190509547A (en) 1905-05-05 1905-05-05 Improvements in the Manufacture and Production of Colouring Matter of the Naphthalene Series

Country Status (1)

Country Link
GB (1) GB190509547A (en)

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