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US 7,553,339 B2Granted
Method of dyeing or printing textile fibre materials using reactive dyes
AssigneeHuntsman International LLC
InventorsJürgen Schmiedl, Wolfgang Mundle
Life of this patent
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Abstract
A method of dyeing or printing textile fiber materials, which comprises bringing the fiber material into contact with (a) at least one reactive dye containing at least one anionic group, (b) at least one compound which reduces the ionic character of the anionic group, and (c) at least one nucleophilic compound, yields dyeings or prints having deep hues and very good fastness properties.
Claims7
A method of dyeing or printing textile fibre materials, which comprises bringing the fibre material into contact with
- (a) an anionic group containing reactive dye of formula
- (b) at least one compound which reduces the ionic character of the anionic group which is an Mg2(+), Ca2(+), Sr2(+), Ba2(+), Mn2(+), Cu2(+), Zn2(+), Ni2(+), Cd2(+), Co3(+), Al3(+), Sn2(+) or Cr3(+) salt in the form of a chloride, sulfate, nitrate, acetate, formate, tartrate or lactate, and
- (c) at least one nucleophilic compound of formula
- H2N—B—NH2 (11),
- wherein B is a C2-C12 alkylene radical which may be interrupted by 1, 2 or 3 —O— moieties and which is unsubstituted or substituted by hydroxy or by sulfato.
2 more elements
Dependencies are inferred from the claim text.