| 摘要 |
<p>1,156,080. Reactive azo dyes. SUMITOMO CHEMICAL CO. Ltd. 27 Nov., 1967 [13 April, 1967], No. 53812/67. Heading C4P. The invention comprises reactive dyes of the general formula wherein R is methyl or ethyl: one X is hydrogen and the other a sulphonic acid group; and Y is acetyl, chloracetyl, or a benzoyl or benzenesulphonyl group which may be substituted by halogen and or alkyl groups. They are prepared by coupling a diazotized 3-#-hydroxyethylsulphonyl-4-methoxy- or 4-ethoxy-aniline or sulphuric acid ester thereof with an appropriate aminonaphtholsulphonic acid, followed by esterification with sulphuric acid when the 3-#-hydroxy ethylsulphuryl compound is used. The reactive dyes obtained dye hydroxyl group containing, e.g. cotton, and nitrogen containing, e.g. wool, textile materials in bluish red shades.</p> |
