15/12/2015 MARCO COLOMBINA IKEM Srl ARZIGNANO

Development of an innovative product / process for the production of " Metal Free " tanned hides, in

particular, chromium free.Stabilization of the skin ( pre- tanning or tanning ) with

hydrothermal resistance (Tg ) above 70 ° C and good workability to the mechanical operations ( pressing,

splitting and shaving ) Get byproducts/waste ( shavings, trimmings ) more

recyclable .

Objectives of the project "Tanning Metal Free"

1. Synthesis of products using natural raw materials from renewable resources and readily available

(market price / availability )

2. Revaluation of waste/by-products of agriculturalSUSTAINABILITY

GREEN STRATEGIES

Renewable resources are resources that are renewed in time and are, therefore, available

for human survival almost indefinitely.

On the contrary are "non-renewable" the fossil fuels what oil, coal and natural gas .

POLYALDEHYDE TANNIG

The tanning agent developed by us is polymeric, polyaldehydes and of natural source.

It reacts with the amines of skin collagen crosslinking and stabilizing it . The mechanism of reaction is like to glutaraldehyde reaction.

NH2 +

R1

R2

O

N CH

R1

R2

+ H2O

TANNING PROCESS

Tannings vs. Tg, COD, Sulphates

Tanning ik1 = 100 % aldehydeTanning ik2 max. solubilityTanning ik3 = 50% aldehyde

TANNED LEATHER, AFTER PRESSING AND SHAVING

PRODUCTSCurrently we are focusing in the automotive products development where we can be better appreciate the technological peculiarities and the renewability and recyclability of this leather type (see European Directive 2000/53 / EC End of Life Vehicle ) .

This product is suitable for the production of many other articles ranging from leather goods to footwear ( especially children's shoes , without chrome VI and formaldehyde ) .

SOME CRUST LEATHER

Positive

results

Futureexperiments

THANKS FOR THE ATTENTION