GB190715204A - Manufacture of Blue Colouring Matters of the Triphenylmethane Series. - Google Patents

Manufacture of Blue Colouring Matters of the Triphenylmethane Series.

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Publication number
GB190715204A
GB190715204A GB190715204DA GB190715204A GB 190715204 A GB190715204 A GB 190715204A GB 190715204D A GB190715204D A GB 190715204DA GB 190715204 A GB190715204 A GB 190715204A
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United Kingdom
Prior art keywords
acid
chlor
sulphobenzaldehyde
dyes
produced
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Expired
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Inventor
Thomas Richard Shillito
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Individual
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Individual
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Publication of GB190715204A publication Critical patent/GB190715204A/en
Expired legal-status Critical Current

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Abstract

15,204. Shillito, T. R., [Aniline Colour and Extract Works, formerlyJ. R. Geigy]. July 2. Samples furnishedunderSection 2 of Patents &c. Act, 1907. Dyes, artificial.-Dyes of the triphenylmethane series, which dye wool from an acid bath with subsequent chroming blue shades, are produced by condensing o-sulphobenzaldehyde or o-chlorbenzaldehyde or their oxy, chlor, brom, sulpho, and nitro derivatives or halogenized m-oxybenzaldehydes, with an o-oxycarboxylic acid in presence of sulphuric acid, and oxidizing the leuco compounds with, for example, nitrosylsulphate, nitric acid, aromatic nitrohydrocarbons and their sulphonic acids, or nitrophenols. In examples, dyes are produced by condensing o - -sulphobenzaldehyde with o-cresotinic acid, o chlorbenzaldehyde with salicylic acid, 2-chlor-5-nitrobenzaldehyde with o-cresotinic acid, and 2:6- dicblorbeuzaldebyde with o-cresotinic acid, and 2 : 4 : 6-trichlor-3-oxybenzaldehyde with o-cresotinic acid, and oxidizing the leuco compounds. Dyes are also similarly obtained from 24-disulphobenzaldehyde, 4- and 5-chlor-2 sulphobenzaldehyde, 2 - chlor- 5 - sulpho - benzaldehyde, 2-chlor-6-sulphobenzaldehyde, 2 : 5- dichlorbenzaldebyde, 2 : 6 - dichlor - 5 - nitrobenzaldehyde, 2 : 6-dichlor-5-salphobenzaldehyde, 2 : 4 : 5- trichlorbenzaldehyde, 2: 4: 6-tribrom-3-oxybenzaldehyde. 2 :6-Dichlorbenzaldehyde is produced from 2 : 6- dichlortoluene by the usual methods.
GB190715204D 1907-07-02 1907-07-02 Manufacture of Blue Colouring Matters of the Triphenylmethane Series. Expired GB190715204A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB190715204T 1907-07-02

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GB190715204A true GB190715204A (en) 1908-07-02

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GB190715204D Expired GB190715204A (en) 1907-07-02 1907-07-02 Manufacture of Blue Colouring Matters of the Triphenylmethane Series.

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3833400A (en) * 1970-11-13 1974-09-03 Fuji Photo Film Co Ltd Sheet with improved image durability

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3833400A (en) * 1970-11-13 1974-09-03 Fuji Photo Film Co Ltd Sheet with improved image durability

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