Tanning & Retanning

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

 

Mineral

 

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

SERTAN CHB

 

Gives some colouration to white leathers.

 

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SERTAN CA

 

Combines the advantages of chromium and aluminium tanning. Produces leathers with a very pale green colour. Suitable for white leathers or very light colours.

 

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SERTAN CH

 

Standard.

 

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SERTAN CO

 

Very good filling. Recommended for white leathers.

 

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SERTAN AL

 

Used to improve the leather quality, achieving soft leathers, with a compact structure and tighter grain and no-looseness. Enables more intense dying and better buffering. It is also suitable for retanning those leathers that were pre-tanned with vegetable extract.

 

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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.
Improves adhesion, elasticity, fibre compaction and buffing.
Good at obtaining closer structures and short plush.
They are recommended to avoid grain looseness in the leather to be treated.
They are ideal for white leathers.
All products have good light fastness.

SERTAN ELB-N

 

Whitening and retanning power.

 

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SERTAN BSF

 

General dispersing agent for other retanning products, vegetable extracts, fatliquors or dyes. Gives better response to dying, improving the intensity and evenness of dyes. It can be used in pre-tanning wet-white.

 

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SERTAN ELB-C

 

Whitening.

 

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SERTAN BSP

 

General dispersing agent for other retanning products, vegetable extracts, fatliquors or dyes. Gives better response to dying, improving the intensity and evenness of dyes. It can be used in pre-tanning wet-white.

 

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SERTAN BX

 

Great filling and retanning power.

 

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SERTAN ALD

 

Used in pre-tanning for wet-white and wet-blue operations, achieves white colours and very low oxidation. When used in wet-blue, it permits the reduction of the chrome content. Improves the physical resistance of leathers.

 

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Vegetal extract

 

Used in pre-tanning, tanning, retanning.
They have excellent tanning, retanning and filling power for all parts of the leather, achieving maximum uniformity. Depending on the selected product and the quantity used, ± compact, ±full or ±hard leather will be obtained.
Suitable for all kinds of articles that require full, compact, round and smooth leathers. They consolidate the fibre structure, and give a tighter and smoother grain with good filling.
They respond better 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 VGM-Q

 

Good penetration. Mimosa substitute. Very light colour.

 

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SERTAN VLM-Q

 

Mimosa substitute. Very light color.

 

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Synthetic Polymers

 

Retanning products based on synthetic polymers.
Used to fill and compact the empty and frayed structures of leather, giving good fullness in flanks and bellies.
Improves adhesion, elasticity, fibres compaction and buffing.

SERTAN RC

 

GGeneral resin on an acrylic base for retanning all kinds of articles. Economical.

 

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SERTAN RPC

 

Resin on a styrene-maleic base. Used in the final stages of the retanning process to improve grain, fullness and smoothness. Highly recommended for buffed articles and for dry, closed and short plush. It increases the reactivity of the surface when dying, achieving stronger colour intensity.

 

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SERTAN RR

 

General resin on an acrylic base for retanning all kinds of articles. Economical.

 

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SERTAN POL

 

Resin on melamine base. Pre-tanning and tanning agent used for all kinds of leathers, especially for wet-white, vegetable tanning and napa garments and shoes. Very good for tight grains.

 

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SERTAN B

 

Excellent tanning agent. Great filling and retanning power.

 

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SERTAN PA

 

Resin on an acrylic base. Due to its acid pH, it is suitable for pre-tanning, tanning and retanning.

 

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Natural Polymers

 

Tanning and filling products based on bio-polymers as an 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.
Improves adhesion, elasticity, fibre compaction and buffing.
Used to obtain closer structures and short plush. They are suitable for avoiding grain looseness in the leather to be treated.
Ideal for white leathers.
All products are 100% natural, biodegradable and formaldehyde free (0%).

SERTAN DC

 

High filling and fibre compaction.

 

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SERTAN RD

 

Filling, fixation and fiber compactation. White leathers.

 

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SERTAN VGM-Liq

 

Good penetration. Used to compact the leather across all its area and thickness. Achieves leathers with light colours, medium hardness and excellent filling. Vegetable extracts of universal use for vegetable tanning and retanning.

 

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SERTAN VES

 

Mimosa extract base. Excellent feeling. Economical.

 

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SERTAN VXM

 

Chestnut substitute. A special agent used for waterproofing articles.

 

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SERTAN VXI

 

Retanning compact. In retanning and tanning process chestnut extract can be used as a substitute. Good filling and compaction. Hardness. A special agent used for waterproofing articles.

 

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SERTAN FP

 

Excellent filling.

 

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SERTAN D-3

 

Fixation and fibers compactation. White leathers.

 

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SERTAN VOM

 

Good penetration. Used to compact the leather across all its area and thickness. Achieves leathers with light colours, medium hardness and excellent filling. Vegetable extracts of universal use for vegetable tanning and retanning.

 

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SERTAN DX

 

Excellent filling and fiber compactation.

 

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SERTAN VTI

 

Tara substitute. Light colour. Good light resistance.

 

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SERTAN VHM

 

Quebracho substitute.

 

 

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SERTAN F

 

Good filling.

 

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SERTAN VLI

 

Product based on Mimosa extract. Obtains soft leathers. Light colours.

 

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SERTAN VAM

 

Good penetration. Used to compact the leather across all its area and thickness. Achieves leathers with light colours, medium hardness and excellent filling. Vegetable extracts of universal use for vegetable tanning and retanning.

 

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SERTAN VHI

 

Retanning compaction. It can be used as a quebracho substitute in the retanning process. Good filling and soft compaction.

 

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SERTAN VEM

 

Retanning compaction. It can be used as a quebracho substitute in the retanning process. Modified. Excellent filling and soft compaction.

 

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SERTAN VGI

 

Mimosa extract base. Obtains soft leathers.

 

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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, obtaining an optimal pH to work with retanning agents, fatliquors and dyes.
Neutralizing agents with buffering and soft de-acidifying effects, reducing the affinity of retanning agents, protecting the grain against overtannage.
They achieve a smooth and tight grain, fullness but no-looseness.
They reduce the 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.
They improve the fat dispersion used in the fatliquoring bath.
They can be used in dying when dye dispersal is required and also to achieve bright colour dyes and increase the shades.

SERTAN RP

 

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

 

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SERTAN N-N

 

Standard neutralizing and complex-forming agent and a mild basifying agent.

 

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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 intensity of colour shades of dye and speeds up vegetable retanning.

 

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SERTAN ND

 

Dispersing agent. It can be used as a neutralizing agent in order to improve the penetration of retanning products, especially the vegetable extracts. In dying, thanks to its strong anionic character, it enables the levelling, dispersion and penetration of dyestuffs.

 

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