#greenleather2016, Marco Colombina's presentation. New organinc tanning material from renewable source

1. 15/12/2015 MARCO COLOMBINA IKEM Srl ARZIGNANO

3. 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"

4. 1. Synthesis of products using natural raw materials
from renewable resources and readily available
(market price / availability )
2. Revaluation of waste/by-products of
agricultural
SUSTAINABILITY
GREEN STRATEGIES

5. 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 .

8. 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.

10. TANNING
PROCESS

15. Tannings vs. Tg, COD, Sulphates
Tanning ik1 = 100 % aldehyde
Tanning ik2 max. solubility
Tanning ik3 = 50% aldehyde

16. TANNED LEATHER,
AFTER PRESSING AND
SHAVING

17. PRODUCTS
Currently 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 ) .

18. SOME CRUST
LEATHER

19. Positive
results
Future
experiments

20. THANKS FOR THE ATTENTION