Tannining & Retanning

Mineral Tanning

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

Product
Chemical Composition
Appearance
pH
General Properties
SERTAN AL
Aluminum Tanning
Solid in powder. Light green
4,0±0,5
It is used to improve the leather quality, getting soft leathers, with compacted structure and tighter grain and no-looseness. It is possible to get more intense dying and better buffing. It is also for retanning the leathers that were pre-tanned with vegetale extract.
SERTAN CA
Chrome-Aluminum
Solid in powder. Light green
2,5±0,5
Combine the advantage of leathers chromium tanned and aluminium tanning. Leathers with very pale green colour. For white leathers or very light colours.

Chemical Tanning

Pre-tanning and retanning.

Special for Wet-white articles.

Stable in acid pH of pickle and tanning.

Product
Chemical Composition
Appearance
pH
%A,M
General Properties
SERTAN ALD
Aldehyde
Fluid liquid. Clourless.
6,0±1,0
45±2
Used in pre-tanning for wet-white and wet-blue operations, getting white colour and very low oxidation. When used in wet-blue, permit to reduce the chrome content. Improve the physical resistance of leathers.
SERTAN BSP
Syntan
Solid in powder. Yellowish
2,5±0,5
100
Consolidates the fibber structure, and gives a tighter and smooth grain, good filling. Very good fullness and compacted fibber. General dispersing for other retaning products, vegetal extracts, fatliquors of dyes. better response to dying, improving the intensity and igualation of dyes.

Tanning and Retanning Based in Vegetal Products

Pre-tanning, tanning, re-tanning

Product
Similar performance
Leather
pH
General Properties
SERTAN VGI
Mimosa Type
Light Brown
4,5±0,5
Light hardness. Belts, leather goods, vegetable vaqueta. Retanning and filling.

Neutralizing Syntans

Neutralizing products giving a soft and buffed neutralizing to the leather, getting an optimal pH to work with retanning, fatliquors with dyes. Neutralizing agents with buffering effect, giving smooth grain and no looseness. Specially suitable for retanning and de-acidifying the chrome tanned leathers. They can be used t reduce /avoid the Cr6+ formation.

Product
Chemical Composition
Appearance
pH
General Properties
SERTAN NEUTRLISER N
Buffed Alkaline salts
Solid in powder. White
8,0±0,5
Standard neutralizing and complex-forming agent and mild basifying agent.

Retanning Products Based in Syntans and Natural Products

Retanning products based in tannin syntans. Pre-tanning, tanning, re-tanning in all kind of aricles.

Product
Chemical Composition / Film Hardness
Appearance
pH
General Properties
SERTAN BSF
Syntan and natural polymer
Solid in powder, Yellowish
5,0±0,5
Consolidates the fibber structure, and gives a tighter and smooth grain, good filling. Very good fullness and compacted fibber. General dispersing for other retanning products, vegetal extracts, fatliquors or dyes. Better response to dying, improving the intensity and igualation of dyes.
SERTAN ELB.N
White syntan
Soild in powder. Light brown
3,5±0,5
Whitering and retanning power
SERTAN ELB.C
White syntan
Soild in powder. White
2,5±0,5
Whitering power
SERTAN CR-6
Syntan and additives
Solid in powder. white
3,5±0,5
Retanning. Cr6+ exhaustion and prevention.
SERTAN ND
Naphthalene syntan
Solid in powder. Light brown
9,5±1,0
Dispersing agent. it can be used like a neutralization agent in irder ti improves the penetration of retanning products and the vegetable extracts specially. in dying, thanks to its strong anionic character helps the levelling, dispersions and penetration of dyestuff.

Retanning in Liquid Form Based in Synthetic Polymers

Retanning products based on synthetic resins. For all kind of articles. Improves adhesion and fiber compactation. Elasticity. A tight, smooth and uniform grain is obtained. Special for in splits, velour, suedes… in order to get closer structure and short plush. Thery are suitable to avoid grain looseness in leathers to be milled. Special for white leathers. Vert good light fastness.

Product
Chemical Composition/ Film Hardness
Appearance
pH
%A.M
General Properties
SERTAN RR
Acrylic polymer. economic
Fluid Liquid. Colourless
5±0,5
28,5±1
General resin for retanning all kind of articles.

Retanning Based in Bio-Polymers

Retanning products based on bio-polymers. Alternative to conventional resin tanning agents. For all kind of Leathers. Used to fill and compact the empty and fryed structures of ides, giving good fullness in flanks and bellies. Special to be used in splits, velour, suedes…. In order to get closer structure and short plush. Improves adhesion and fibbers compaction. Elasticity Ther are suitable to avoid grain/ oseness in the leather to be milled. Improve the buffinf. A light, smooth and uniform grain is obtained 0% Formaldehyde. 100% biodegradable.

Product
Chemical Composition/ Film Hardness
Appearance
pH
General Properties
SERTAN DX
Bio-polymer having natural products
Solid in powder. Light brown
5,0±1,0
Excellent filling and fiber compactation
SERTAN DC
Bio-polymer having natural products
Solid in powder. Brownish
8,5±0,5
High filling and fiber compactation