Verfahren zur Herstellung löslicher Farbsalze
1391917 Soluble disazo dye salts BADISCHE ANILIN- & SODA-FABRIK AG 25 Aug 1972 [27 Aug 1971] 39687/72 Heading C4P Novel dye salts of the formula wherein each R is H or -SO 3 H.X and X is a C 4-20 aliphatic amine containing an ether group different symbols X being identical or different, are prep...
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Zusammenfassung: | 1391917 Soluble disazo dye salts BADISCHE ANILIN- & SODA-FABRIK AG 25 Aug 1972 [27 Aug 1971] 39687/72 Heading C4P Novel dye salts of the formula wherein each R is H or -SO 3 H.X and X is a C 4-20 aliphatic amine containing an ether group different symbols X being identical or different, are prepared by reaction of the corresponding free sulphonic acids with suitable amines or amine mixtures. The acids may also be used as their alkali metal or ammonium salts in which case these are reacted with water-soluble salts of the amines, e.g. formates, acetates or hydrochlorides. The dyestuffs in free acid form are -prepared conventionally from diazotized aminoazobenzenes and 2-naphtholsulphonic acids. The salts are soluble in alcoholic solvents and are used for colouring transparent plastics, varnishes, printing inks, stamping inks and ballpoint pen inks. They are particularly suitable for colouring polypropylene which is to be processed into decorative and ornamental ribbons. |
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