Tanning & Retanning

We have a wide range of tanning, neutralizing and retanning products. Tanning and retanning agents in liquid or solid form with excellent properties.

 

Mineral

 

Consolidates the fibber structure, and gives a tighter and smoother grain, good filling.
Better response to dying, improving the intensity and evenness of dyes.

SERTAN CH

Standard.

SERTAN CHB

Give some color to white leather.

SERTAN CO

Very good filling. Recommended for white leathers.
SERTAN CA
Combine the advantage of chromium and aluminium tanning. Leathers with very pale green color. Suitable for white leathers or very light colors.
SERTAN AL
It is used to improve the leather quality, getting soft leathers, with compacted structure and tighter grain and no-looseness. It enables more intense dying and better buffing. It is also suitable for retanning those leathers that were pre-tanned with vegetable extract.

Syntans

 

Retanning products based on synthetic polymers.
Used to fill and compact the empty and frayed structures of the leather, giving good fullness in flanks and bellies.
Improve adhesion, elasticity, fibre compaction and buffing.
Special to get closer structure and short plush. They are suitable to avoid grain looseness in the leather to be milled.
Special for white leathers. All products have good light fastness.

SERTAN ELB-N

Whitening and retanning power.

SERTAN ELB-C

Whitening.

SERTAN BX

Great filling and retanning power.
SERTAN BSF
General dispersing agent for other retanning products, vegetable extracts, fatliquors or dyes. Better response to dying, improving the intensity and evenness of dyes. It can be used in pretanning wet-white.
SERTAN BSP
General dispersing agent for other retanning products, vegetable extracts, fatliquors or dyes. Better response to dying, improving the intensity and evenness of dyes. It can be used in pretanning wet-white.
SERTAN ALD
Used in pre-tanning for Wet-white and wet-blue operations, getting white color and very low oxidation. When used in wet-blue, permit to reduce the chrome content. Improve the physical resistance of leathers.

Vegetal extract

 

Pre-tanning, tanning, re-tanning.
Excellent tanning, retanning and filling power in all parts of the leather, getting the maximum uniformity. Depending on the selected product and the used quantity, ± compact, +full or +hard leather will be obtained.
Suitable for all kind of articles when we require full, compact, round, smooth leathers. They consolidate the fibre structure, and give a tighter and smoother grain, good filling.
Better response to dying, improving the intensity and evenness of dyes.
All products in the range are completely soluble in hard water at 40-45ºC.
All products in the range are 100% natural, formaldehyde free (0%) and 100% biodegradable.

SERTAN VLM-Q

Mimosa substitute. Very light color.
SERTAN VGM-Q
Good penetration. Especial to compact the leather in all its area and thickness. We will get leathers with light colors, light hardness and excellent filling. Vegetable extracts of universal use for vegetable tanning and retanning.

Synthetic Polymers

 

Retanning products based on synthetic polymers.
Used to fil and compact the empty and frayed structures of leather, giving good fullness in flanks and bellies.
Improves adhesion and fibbers compaction. Elasticity. Improves the buffing.
Special to get closer structure and short plush. They are suitable to avoid grain / oseness in the leather to be milled.
Special for white leathers. All products having good light fastness.

SERTAN RC

General resin on acrylic base for retanning all kind of articles.

SERTAN RR

General resin on acrylic base for retanning all kind of articles.

SERTAN B

Excellent tanning. Great filling and retanning power.

SERTAN PA

Resin on acrylic base. Due to its acid pH, it is suitable for pre-tanning, tanning and re-tanning.
SERTAN RPC
Resin on styrene-maleic base. Used in the final stages of the retanning process to improve the grain, fullness and smootnness. Very suitable for buffed articles and for dry, close and short plush. It increases the reactivity of surface when dying, getting more color intensity.
SERTAN POL
Resin on melamine base. Pre-tanning and tanning agent for all kind of leathers, specially for Wet-white, vegetable tanning and napa garments and shoes. Very good for tight grain.

Natural Polymers

 

Retanning and filling products based on bio-polymers as alternative to conventional resins like dicyandiamide and melamine.
Used to fill and compact the empty and frayed structures of the leather, giving good fullness in flanks and bellies.
Improve adhesion, elasticity, fibre compaction and buffing.
Special to get closer structure and short plush. They are suitable to avoid grain looseness in the leather to be milled.
Special for white leathers. All products are 100% natural, biodegradable and formaldehyde free (0%).

SERTAN DC

High filling and fiber compactation.

SERTAN RD

Filling, fixation and fiber compactation. White leathers.

SERTAN D-3

Fixation and fibers compactation. White leathers.

SERTAN DX

Excellent filling and fiber compactation.

SERTAN F

Good filling.

SERTAN FP

Very good filling.

SERTAN VOM

Good penetration. Especial to compact the leather in all its area and thickness. We will get leathers with light colors, light hardness and excellent filling. Vegetable extracts of universal use for vegetable tanning and retanning.

SERTAN VAM

Good penetration. Especial to compact the leather in all its area and thickness. We will get leathers with light colors, light hardness and excellent filling. Vegetable extracts of universal use for vegetable tanning and retanning.

SERTAN VLI

Mimosa extract base. Soft leathers. Light colour.

SERTAN VES

Mimosa extract base. Excellent feeling. Economic.

SERTAN VHM

Quebracho substitute.

SERTAN VHI

Retanning compact. In retanning process can be used as a quebracho substitute. Good filling and soft compactation.

SERTAN VEM

Retanning compact. In retnning process can be used as a quebracho substitute. Modified. Very good filling and good compaction.

SERTAN VGM-Liq

Good penetration. Especial to compact the leather in all its area and thickness. We will get leathers with light colors, light hardness and excellent filling. Vegetable extracts of universal use for vegetable tanning and retanning.

SERTAN VXM

Chestnut substitute. Special extract for waterproofing articles.

SERTAN VTI

Tara substitute. Light colour. Good light resistance.

SERTAN VGI

Mimosa extract base. Soft leathers.

SERTAN VXI

Retanning compact. In retanning and tanning process can be used as an extract chestnut substitute. High filling and compactation. Hardness. Special extract for waterproofing articles.

Neutralizing, Dispersing

 

Due to their buffering properties they prepare the leather to accept the following retanning agents and lead to a progressive, moderate, uniform and effective neutralisation, getting an optimal pH to work with retanning agents, fatliquors and dyes.
Neutralizing agents with buffering and soft de-acidifying effect, reducing the affinity of retanning agents, protecting the grain against overtannage and giving smooth and tight grain, no-looseness, fullness.
They reduce de cationic character of wet-blue and wet-white leathers and facilitate the penetration and dispersion of anionic retanning products without causing any astringency or losing any physical property.
Improve the fat dispersion used in the fatliquoring bath.
They can be used in dying when dyes dispersing is required and also to achieve bright color dyes and increase the shades.

SERTAN RP

Vegetable extract dispersing and pre-tanning agent. It prepares the leather for fast penetration of vegetable extracts.

SERTAN N-N

Standard neutralizing and complex-forming agent and mild basifying agent.
SERTAN ND
Dispersing agent. It can be used like a neutralization agent in order to improve the penetration of retanning products, the vegetable extracts specially. In dying, thanks to his strong anionic character, it enables the levelling, dispersion and penetration of dyestuffs.
SERTAN N-AG
Maximum buffering ability. It masks and stabilizes the chrome liquors, providing very full leathers. Improves the softness and fullness of the leather and the elasticity of the grain. It also improves the grain firmness. Enhances the plush on suede articles. It increases the dye color shades and speeds up vegetable retanning.

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