Química Internacional para el Curtido S.L.

Tanqin PRE

Protein retanning agent with high tone leveling and plush leveling properties

Retanning agent for chrome leather. Balanced mix of acrylic and protein based retanning agents. It Improves the elasticity and firmness of the grain.

Tanqin PRE helps to equalize during the dying process of leathers and split leathers. It gives fullness, tube feel and padding to the skin. It does not add formaldehyde to the wet end process.

In split leathers, dying with high equalization between butts of the same batch are obtained.

Due to the proper nature of the product, the improvement in the buffability of split and full-grain leather is considerable.


Due to its chemical nature, it can be used in both split and full-grain leathers in any part of the process starting from the neutralized one. If what we are looking for is firmness, it may be interesting to add it together with the fatliquoring or after it; but also looking for filler we can place it in the retanning package where it will provide us with dispersing properties even in the neutralized, 30 minutes after adding the neutralizers. In the event that we want to obtain the best performance of the product, it is advisable to add it during or after fatliquoring process.

Properties on split leathers

It is a mixture of acrylic-based retanning agents and protein derivatives that allows the leather to achieve selective filling in empty or weak areas of the leather, improving the filling and grain firmness as well as its elasticity. It is a product that provides quite considerable possibilities for improving the skin. If we refer specifically to the world of split leather, whether we place it 30 minutes after adding the neutralizers or before the anionic retanning agents, it will considerably improve the homogeneity in the distribution of the rest of the products, achieving an equalization within the drum little common even when we refer to items that include suedes of different tanning. It is worth mentioning the good sandability of the split leather, leaving a very regular plush and, as we have mentioned, very even, in addition to a full split leather with a good touch.

Properties on full grain leathers

The dispersing power of Tanqin PRE allows, not only the proper filling of products of this nature, but also that this distribution is homogeneous. What is achieved with this particular effect of Tanqin PRE? Well, that the filling is so regular throughout the skin that when applying the dye, it is also regular and homogeneous. This product will provide us with an improvement in grain firmness if we place it both next to the retanning package and after fatliquoring, or even in the same fatliquoring package. The versatility of Tanqin PRE forces the tanner to carry out his own tests to analyze at what point in the process it is most convenient to use it according to his requirements. Due to the nature of the components of Tanqin PRE, it does not add formaldehyde to the skins that are treated with it.


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