Wet-end leather dyeing auxiliaries that improve dyestuff performance

Wet-end leather dyeing auxiliaries that improve dyestuff performance

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From automotive leather to upholstery, and from waterproof to metal-free tanning, Stahl’s wet-end leather dyeing auxiliaries improve dyestuff performance for leather used in all kinds of applications. Our portfolio enables tanners to achieve the desired shades of color and so meet customer demands. 


Product
Type
Main features

Coriacide®

Metal free dyestuffs range

Metal free anionic dyes, mainly homogeneous with good fastness and excellent combinability to produce brilliant and deep shades.

Derma® Soft

Predispersed dyestuffs range

Anionic pre-dispersed dyes with excellent fastness, levelness and outstanding combinability to ensure always the desired pastel shade.

Inoderme®

Metal content dyestuffs range with special properties

Homogeneous metal complexes Cu, Cr, Co dyestuffs with outstanding fastness and special dyeing behavior to produce brilliant shades. Inoderme®  Range contains also all anionic dyestuffs Fe content.

Luganil®

Anionic dyestuffs

Homogeneous anionic dyestuffs. Some are metal complexes of Cr, Co, Cu.

Lurazol®

Wet-End Dyes & Auxiliaries

Homogeneous anionic dyestuffs. Some are metal complexes of Cr, Co, Cu.

Melioderm® HF

Metal content dyestuffs range with outstanding fastness

Well balanced mix of anionic dyestuffs. Some contain metal complexes.

Coralon® OT

Dispersing agent based of naphthalene sulphonic acids

Anionic dispersing agent to speed up penetration and distribution of retanning/vegetables and dyestuffs. Low formaldehyde free content. Moderate heat & light fastness and bleaching effect.

Densotan® A

Dispersing Polymeric auxiliary free of emulsifiers

Special dispersing auxiliary increases general retanning distribution, increase levelness and defect coverage.

Dermafix® P

Aliphatic polyamine derivative - Strong cationic product for fixation

Free of formaldehyde auxiliary suitable for increase wet fastness mainly perspiration when is applied in fresh bath alone at the end of process. High Heat resistance. Due to its strong cationic character, fatliquors and unfixed dyestuff can precipitate on leather surface if intermediate washing was not made properly.

Dermafix® S

Polyamine based with strong cationic character

To improve shade depth on top dyeing in leathers heavily retanned with vegetables and synthetic chemicals. Few amount is needed to produce deep blacks & brown shades. When it is applied at the end of process improves bath exhaustion.

Dermagen® DMA

Quaternary ammonium compound for top dyeing weakly cationic

Auxiliary for top dyeing with high capacity to reduce differences between different dyestuff showing very even shades and defect coverage for full grain leathers when is applied in fresh bath before top dyeing. It is also recommended for wetting back crust with high anionicity.

Dermagen® GP

Ethoxilated alkyl amines with amphoteric character

Increases affinity between different dyestuffs showed dyeing's with outstanding levelness and dye penetration. Low bleaching effect.

ProSpread

Biochemical

Increases significantly retanning distribution when is used in wetting back and neutralization improving by consequence dyestuff distribution.

Tamol® Fix OK

Ethoxilated fatty amine derivative with cationic character

"Auxiliary for top dyeing with high capacity to reduce differences between different dyestuff showing very even shades and defect coverage for full grain leathers when is applied in fresh bath before top dyeing. It is also recommended for wetting back crust with high anionicity. Has a slight fatliquoring effect."

Tamol® Fix PF

Polymer for dyestuffs - Strong cationic product for fixation

Free of formaldehyde auxiliary suitable for increase wet fastness mainly perspiration when is applied in fresh bath alone at the end of process. High Heat resistance. Due to its strong cationic character, fatliquors and unfixed dyestuff can precipitate on leather surface if intermediate washing was not made properly.

Tamol® M

Dispersing agent based of naphthalene sulphonic acids

Anionic dispersing agent to speed up penetration and distribution of retanning/vegetables and dyestuffs. Low formaldehyde free content. Moderate heat & light fastness.

Tamol® NL liq

Salts of organic acids and polyols

By its special chemistry when is used as auxiliary in dyeing, levelness and dye distribution is noticeably improved providing brilliant shades and reducing the white line under grain.

Tamol® NNOL Dispersing agent based of naphthalene sulphonic acids suitable for pastel shades Anionic dispersing agent to speed up penetration and distribution of retanning/vegetables and dyestuffs. Low formaldehyde free content. Excellent heat & light fastness and strong bleaching effect to produce pastel shades.


Auxiliaries that enhance the performance of wet-end dyestuffs

Our wet-end dyestuffs include a variety of auxiliaries that improve their performance. Our auxiliaries do this by, among other things, increasing and accelerating dyestuff penetration, increasing levelness, improving shade depth and increasing retanning distribution.

Take Tamol® M. This anionic dispersing agent is low-formaldehyde and speeds up the penetration and distribution of retanning vegetables and dyestuffs. Or Densotan® A,. This special dispersing auxiliary increases retanning distribution and levelness, and improves defect coverage. 



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Wet-end leather dyeing auxiliaries that improve dyestuff performance
Joachim Henkmann
Global Marketing - Business Unit Leather Chemicals