| 摘要 |
517,434. Dyes. SOC. OF CHEMICAL INDUSTRY IN BASLE. July 27, 1938, Nos. 22346 and 22347. Convention dates, July 29, 1937, and June 15, 1938. [Class 2 (iii)] Yellow vat dyes are made by reacting an anthraquinone substituted in 1-position by an amino group and in 3-position by a CO- phenyl group with a compound containing reactive halogen. The reaction is preferably carried out in a solvent such as a dichlorbenzene, a trichlorbenzene, or nitrobenzene and in presence of an acid-binding agent such as calcium or sodium carbonate or alkali acetate and of copper or a copper compound. In examples, 1-amino-3-benzoylanthraquinone is reacted with (1) terephthalic acid dichloride, (2) isophthalic acid dichloride, (3) benzoyl chloride, (4) Bz.l-brombenzanthrone, (5) cyanuric chloride in phenol. Further examples describe the use of the products obtained under (1) and (2) above in dyeing cotton. 1 - Amino - 3 - benzoylanthraquinones are obtained by reacting 1-halogen-3-benzoylanthraquinones with p-toluenesulphamide, followed by hydrolysis. 1 - Halogen - 3 - benzoylanthraquinones are made by reacting a 1-halogenanthraquinone-3- carboxylic acid chloride with benzene according to Friedel-Craft. 1 - Halogenanthraquinone - 3 - carboxylic acid are obtained by oxidation of 1-halogen-3- methylanthraquinones with manganese dioxide and sulphuric acid. The Specification as open to inspection under Sect..91 refers to reacting a 1-halogen-3- acylanthraquinone with a compound of nitrogen having at least two hydrogen atoms attached to a nitrogen atom, and in further examples describes (6) the reaction of 1-bromo-3-acetylanthraquinone (which is obtained from 1-brom- 3-anthraquinone carboxylic acid chloride and magnesium malonic acid ethyl ester) with ptoluenesulphamide, followed by hydrolysis with sulphuric acid to give 1-amino-3-acetylanthraquinone ; (7) the reaction of 1 - bromo - 3 - benzoylanthraquinone with 1-aminoanthraquinone.. Also, anthrimides obtained may be treated with condensing agents such as concentrated sulphuric acid, chlorsulphonic acid, aluminium chloride (mixed if desired with alkali chloride or pyridine) or a caustic alkali (mixed if desired with an alcohol), and in further examples, (8) the product from (7) is heated with aluminium chloride and pyridine and (9) the product from 1-amino-3-benzoylanthraquinone and Bz.1-brombenzanthrone is heated with alcoholic potash. A further example describes the use of the product of (8) above in dyeing cotton. This subject-matter does not appear in the Specification as accepted. |
