| 摘要 |
1,223,269. Dyeing naturtal and synthetic polyamides. SANDOZ Ltd. 30 Oct., 1968 [29 Nov., 1967], No. 51460/68. Heading D1B. [Also in Division C4] Fibres and textile materials consisting of or comprising natural e.g. wool, silk, or synthtetic polyamides e.g. nylon 66, are dyed using dyes of the general formula: wherein ring A may be further substituted e.g. halogen, alkyl or alkoxy. Red shades are obtained.
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