| 摘要 |
1341134 Dye compositions CROMPTON & KNOWLES CORP 4 Oct 1971 [5 Oct 1970] 46126/71 Heading D1B Dye compositions comprise 2 to 12 parts by weight of an aromatic ortho monohydroxy carboxylic acid and 1 part by weight of a compound of formula I in which M is H, K, Na, ¢Mg, ¢Ca, ¢Mn, or ¢Ba and B is an azo coupling component free of water-solubilising groups. Preferred acids are salicylic acid, and o-hydroxynaphoic acids. The compositions are used for dyeing and printing nickel modified olefinic polymers, e.g. polypropylene at pH valves below 5.
|
