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US 3,945,794 AGranted
Production of level dyeings on acrylonitrile polymer fibers with basic dyes
AssigneeBASF SE
InventorsRudolf Rokohl, Rolf Fikentscher, Herbert Helfert
Life of this patent
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Abstract
Acrylonitrile polymer fibers are dyed level shades with basic dyes using as leveling agent a quaternary ammonium salt containing two or three benzyl groups as nitrogen ligands.
Claims5
In a process for the production of level dyeings on acrylonitrile polymer fibers with a basic dye using a quaternary ammonium salt as a levelling agent, the improvement which comprises utilizing as said levelling agent from 0.5 to 10% by weight, with reference to said fibers, of the quaternary ammonium salt of the formula ##SPC4##
- in which R.sup.1 is alkyl of one to four carbon atoms or benzyl;
- R.sup.2 is alkyl of one to four carbon atoms;
- or R.sup.1 and R.sup.2 taken together form a heterocyclic ring of four to six carbon atoms with N.sup.+;
- and X is the radical of an organic or inorganic acid.
1 more element
Dependencies are inferred from the claim text.