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US 4,322,372 AGranted
Condensation products containing sulphonic acid groups
AssigneeCiba-Geigy Corporation
InventorsAlbert Wurmli, Hans U. Berendt
Life of this patent
Estimating the term…
Abstract
New condensation products of the formula ##STR1## wherein R represents alkyl, cycloalkyl, aralkyl, aryl, or halogen. M represents hydrogen, an alkali metal or alkaline earth metal or an ammonium group, and n is a number from 1 to 3; these products are particularly useful as dyeing assistants for dyeing synthetic polyamide fibres with anionic dyes.
Claims9
A condensation product of the formula ##STR35## wherein R represents alkyl, cycloalkyl, aralkyl, aryl or halogen, M represents hydrogen, an alkali metal or alkaline earth metal, or an ammonium group, and n is a number from 1 to 3.
Dependencies are inferred from the claim text.