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Retanning agent
  • Supertan DNOL
  • Supertan D-R7
  • Supertan HR
  • Supertan M
  • Supertan FB
  • Supertan DLF
  • Supertan AO
  • Supertan D
  • Supertan ER8
  • Supertan PF

    Supertan DNOL

    Main ingredients: aromatic condensate

    Attributes:

    Appearance:Beige powder

    Content:95±3%

    Solubility: soluble in water

    PH:6.5-8.5

    Main features:

    Neutralizing tannin DNOL is a kind of anionic synthetic tanning agent which is suitable for neutralization and can also be used as a leveling agent for dark leathers. It contains organic acid salts for buffering and synthetic effect, and mildly neutralizes all kinds of leathers to tighten leather’s surface and make leather plump and elastic. It can be used separately, or used with common neutralizing agents such as sodium formate, sodium acetate, and soda with an amount of 1.0-3.0% of shaved leather. 

    Neutralizing tannin DNOL is very suitable for retanning. It can be used alone or used with other anionic retanning agents. More DNOL can enhance the plumpness, softness and roundness of leather. It will not make the surface rough even used with large amount of tanning extracts. The usage amount is generally 2.0-3.0% of shaved leather.

    Neutralizing tannin Supertan DNOL has excellent light resistance, which can buffer the reaction between dyes and positive ions in leather during dyeing to achieve the effects of uniform dyeing, dispersion and permeation. The usage amount is generally 1.0%-2.0% of shaved leather.

    Operational safety: avoid contact with eyes, skin and wounds. If accidental contact, rinse immediately with plenty of water.

    Storage conditions: store in a well-ventilated and cool warehouse, prevent from sunlight, freeze and water.

    Packaging and transportation: 25kg per plastic drum , non-dangerous goods, transport according to the general cargo.

    Supertan D-R7

    Main ingredients: dicyandiamide resin tannin

    Attributes:

    Appearance:Light brown powder

    Content:95±2%

    PH:(10% water solution) 7.5-9.5

    Ionicity: anion

    Main features:

    D-R7 is a kind of filling synthetic resin tannin with good selective filling effect, which can be used for the retanning of chrome leather. It has the function of selective filling and mainly deposits in the leather area with soft tissues.

    It can increase the plumpness of chrome leather and tightness of grain surface, maintain good features of chrome leather, and make grain surface smooth with proper convergence property.

    It has a good leveling capacity to make leather’s color uniform and bright after dyeing. It can improve the abrasion resistance of leather and helps to adhere and emboss finishing materials.

    Operational safety: avoid contact with eyes, skin and wounds. If accidental contact, rinse immediately with plenty of water.

    Storage conditions: store in a well-ventilated and cool warehouse, prevent from sunlight, freeze and water.

    Packaging and transportation: 25kg per plastic drum , non-dangerous goods, transport according to the general cargo.

    Supertan HR

    Main components: complex of aromatic sulfonate, amine compound and special additive

    Attributes:

    Appearance:Light beige powder

    Content:≥ 85%

    Charge: anion

    PH:(10% water solution ) 4.6-6.2

    Main features:

    HR is a compound retanning agent whose compositions enable this product to play different roles according to different fiber structures of pelt. It mainly performs a strong filling function in fiber loosed areas, while in the fibers closely structured areas, it performs a function similar to that of common retanning agents to produce a fine, smooth and elastic grain surface.

    It is particularly applicable to loose wet blue leather, especially Napa leather which requires a plump, tight and soft grain surface. It can provide a good plumpness even for belly area leathers. The grain surface will be smooth, soft and firm with good resistance to tearing.

    It can improve the performance of abrasive leather and has good effect on buffed leather.

    With excellent light resistance, it is also suitable for retanning white upper leather.

    Application tips:

    It is recommended for various loose wet blue, especially for the retanning of nappa leather which requires plump, firm and soft grain surface. It will provide a good buffing effect for split leather or buffed leather. It can also be used for retanning white leather and milling soft leather. This product is usually used after neutralization; generally, the usage amount is 4-8%, depending on the quality of wet blue leather and leather type to be produced. For thick upper leather that does not require milling, HR can be used in conjunction with some polymer retanning agents and vegetable tanning agents.

    Operational safety: avoid contact with eyes, skin and wounds. If accidental contact, rinse immediately with plenty of water.

    Storage conditions: store in a well-ventilated and cool warehouse, prevent from sunlight, freeze and water.

    Packaging and transportation: 25kg per plastic drum , non-dangerous goods, transport according to the general cargo.

    Supertan M

    Main component: condensate of naphthalenesulfonic acid

    Technical indicators:

    Appearance:Beige powder

    Content:≥ 92%

    Charge: anion

    PH:(10% water solution ) 6-9

    Main features:

    M is a kind of dispersing tannin and has a neutral reaction when dissolves in water. It has a dispersion effect for vegetable tannin (such as tannin extract). This product can prevent the formation of large and highly convergent molecules of vegetable tannins and precipitation of vegetable tannins, accelerate the permeation, and enhance tanning effect. Even vegetable tannins with high convergence can be evenly absorbed by the leather without too much tannin deposited on the pearl surface, and still maintain the elasticity of pearl surface.

    When used together with synthetic tanning agent in the retanning of chrome leather, it promotes neutralization and makes the retanning agent absorb more evenly and moderate, and penetrate deeper.

    M can provide uniform dyeing and bleaching effect to make leather receive uniform light color and beautiful appearance.

    Application tips:

    It is recommended to use a certain amount of substitute synthetic tanning agent in addition to product M when using mimosa extract solely. For the retanning of chrome leather, it can accelerate neutralizing effect, facilitate permeation, and make vegetable tannin or synthetic tannin disperse and absorb uniform in a moderate manner. 

    Operational safety: avoid contact with eyes, skin and wounds. If accidental contact, rinse immediately with plenty of water.

    Storage conditions: store in a well-ventilated and cool warehouse, prevent from sunlight, freeze and water.

    Packaging and transportation: 25kg per plastic drum , non-dangerous goods, transport according to the general cargo.

    Supertan FB

    Main ingredients: protein and organic minerals

    Attributes:

    Appearance:Rice white powder

    Content:≥约90%

    PH:(10%water solution ) 5.5-7.5

    Lightfastness: good

    Main features:

    FB is a kind of protein filler that can tighten and firm fibers in the lateral abdominal leather, and improve the firmness of grain surface without affecting dyeing.

    It can be used with filling materials such as vegetable tanning to improve the plumpness and comfortable touch feeling of leather.

    Application tips:It is used for adding leather and suede after re-twisting, usually added before fatliquoring, generally 4%-8%.

    Operational safety: avoid contact with eyes, skin and wounds. If accidental contact, rinse immediately with plenty of water.

    Storage conditions: store in a well-ventilated and cool warehouse, prevent from sunlight, freeze and water.

    Packaging and transportation: 25kg per plastic drum , non-dangerous goods, transport according to the general cargo.

    Supertan DLF

    Main ingredients: phenolic condensate

    Attributes:

    Active substance:Light beige powder

    Content:≥ 92%

    Charge: anion

    PH:(10% water solution) 3.5-4.5

    Main features:

    DLF is a kind of synthetic white tannin with various excellent functions. Leathers after retanning through DLF will improve their leveling and light resistance of dyeing significantly. It is mainly used for white leathers and leather retanning requiring improving light resistance.

    Since DLF can bring leathers with good plumpness, smoothness and elastic grain surface. It provides pure white leathers with good light resistance, elegant, smooth and tight pearl surface and perfect grinding performance after retanning with DLF. Therefore, sLipertan DLF is applicable to full grain leathers, buffed leathers and nubuck.

    DLF can also be used as a leveling agent for pale leathers.

    DLF can be used in self-tannage to obtain perfect plumpness, soft touching feel and light resistance.

    Application tips:

    DLF is insensitive to common salt PH, which can be used before or after neutralization, and can be mixed with all synthetic tannins and vegetable tannins. In addition to tanning and retanning, it can also be used as a leveling agent for pale leathers. Vegetable tannage after re-tanning with DLF will achieve great improvement in plumpness and softness. But before re-tanning with sLipertan DLF, leathers should be wetted first, especially for leathers after re-tanning with vegetable tanning materials.

    Operational safety: avoid contact with eyes, skin and wounds. If accidental contact, rinse immediately with plenty of water.

    Storage conditions: store in a well-ventilated and cool warehouse, prevent from sunlight, freeze and water.

    Packaging and transportation: 25kg per plastic drum , non-dangerous goods, transport according to the general cargo.

    Supertan AO

    Main ingredients: amphoteric condensate of aromatic compounds

    Attributes:

    Active substance:Yellowish powder

    Content:≥ 92%

    Charge: anion

    PH:(10% water solution ) 3.5-4.5

    Main features:

    It is a kind of synthetic tannin with positive and negative charges, which can be dissolved in water rapidly. AO can be compatible with chrome powder, re-tanning agents containing chrome powder, synthesize tannin, vegetable tannin, anionic dyes and other auxiliaries, and can disperse vegetable tannin.

    AO has positive and negative charges, its negative charges combine with chrome leather, and positive charges combine with dyes to improve the fixation of dye and bright color. It is used for the retaining of chrome leather to obtain uniform and bright colors. 

    After re-tanned with AO, the leather fibers become more compact and not easy to be scratched, so as to possess excellent fullness, softness, and light resistance and keep leather smooth.

    AO can combine well with leather fibers even under high pH values, especially suitable for retanning furniture leathers.

    Application tips:

    When AO is used for re-twisting, it can be used separately from the neutralizing agent or in the same water bath. However, if AO is used before dyeing, it must be changed after water or water washing to prevent the dye from being fixed too fast. Filling effect, can be used in combination with aldosterone, AO or plant tannins, without making the color of the leather too light. The AO dosage is generally from 2% to 8%.

    Operational safety: avoid contact with eyes, skin and wounds. If accidental contact, rinse immediately with plenty of water.

    Storage conditions: store in a well-ventilated and cool warehouse, prevent from sunlight, freeze and water.

    Packaging and transportation: 25kg per plastic drum , non-dangerous goods, transport according to the general cargo.

    Supertan D

    Main ingredient: melamine condensate

    Attributes:

    Active substance:Off-white powder

    Content:≥ 90%

    Charge: anion

    PH :(10% water solution ) 7.5-8.5

    Main features:

    D is a new kind of soft and plump resin tannin. After complete condensation, its formaldehyde will not free out, and can be mixed with other tanning agents, auxiliaries and dyes with negative ions.

    Leathers after retanning with D will not become hard, and have a soft and plump touching feel with satisfied filling effect, especially suitable for some loose areas such as belly edge.

    Moreover, D can increase the abrasion resistance of leather, such as Nubuck and suede.

    Application tips:

    In order to improve the fullness of the leather and obtain a tight and good bead surface, D is usually powdered into the drum together with the vegetable tanning agent and the synthetic tanning agent. When you are simmering, first neutralize and then add D, and then the water temperature is about 40 °C. If the skin is beaten (Mil1ed), D can promote the skin to obtain a uniform and good pattern (Milled grain). Even the skin of the Wet toggled produces a uniform and good bulging.

    The amount of this product is 2%-4% based on the shaving weight.

    Operational safety: avoid contact with eyes, skin and wounds. If accidental contact, rinse immediately with plenty of water.

    Storage conditions: store in a well-ventilated and cool warehouse, prevent from sunlight, freeze and water.

    Packaging and transportation: 20kg per plastic drum , non-dangerous goods, transport according to the general cargo.


    Supertan ER8

    Attributes:

    Appearance:Light yellow viscous liquid

    Solid content:35-1%

    Viscosity:8000±15000mPa.s

    PH:4.5-5.5

    Solubility: miscible in any proportion of warm or cold water

    Characteristic:

    This product is a high molecular weight retanning agent synthesized by modified acrylic acid. Retanning with this product can make leather soft, plump, and fine grain surface with uniform color; its selective filling property can improve the grain surface strength of soft leather and provide high leather output rate and good light resistance.

    Recommended formula: used in and before and after retanning, the amount is 3-5%.

    Operational safety: avoid contact with eyes, skin and wounds. If accidental contact, rinse immediately with plenty of water.

    Storage conditions: store in a well-ventilated and cool warehouse, prevent from sunlight, freeze and water.

    Packaging and transportation: 120kg,150kg per plastic drum , non-dangerous goods, transport according to the general cargo.

    Supertan PF

    PF is suitable for the tanning and retanning of high-grade garment leather, soft leather, luggage sofa furniture and fur.

    Attributes:

    Component: Fatty aldehyde

    Active ingredient: about 45 (±2) %

    PH :(10% water solution) 7

    Active substance:Yellowish liquid

    Ionicity: anion

    Application:

    PF is stable to almost all chemicals used in leather treatment, such as fatliquoring agents, tanning agents and dyes, but may have adverse effects when encounters sulfide and nitrides.

    PF in conjunction with chrome and aluminum tanning agent can help tanning agent penetrate effectively, improve leather absorption rate, decrease tanning agent dosage and reduce the burden of wastewater treatment.

    When used in chrome retanning, PF can disperse tanning agent effectively to permeate evenly in leather fibers, open the way for later retanning, filling agent and dye, and produce the real Napa leather.

    PF has good light resistance and is not affected by PH value, which can be used to produce white leather.

    When used for furs, PF can make furs soft and white with good elongation.

    Using PF in the pretanning of leather and furs will produce light weight and improve dyeability.

    Operational safety: avoid contact with eyes, skin and wounds. If accidental contact, rinse immediately with plenty of water.

    Storage conditions: store in a well-ventilated and cool warehouse, prevent from sunlight, freeze and water.

    Packaging and transportation:125kg,150kg per plastic drum , non-dangerous goods, transport according to the general cargo.