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US 4,059,403 AGranted
Process for dyeing wet-spun aromatic polyamides in gel form
AssigneeBayer Aktiengesellschaft
InventorsGerhard Dieter Wolf, Ralf Miessen, Hans Egon Kunzel, Francis Bentz
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Abstract
The invention relates to a process for the production of dyed filaments from aromatic polyamides which contain acid groups.
Claims13
A process for the production of dyed filaments of aromatic polyamides which comprises continuously dyeing wet-spun gel filaments of an aromatic polyamide which contains acidic groups before, during, or after stretching, in an aqueous bath containing at least one water-soluble, cationic dye in dissolved form.
Dependencies are inferred from the claim text.