POSYNTAN FMK is a retanning agent based on phenols.
POSYNTAN FMK has an excellent retanning power and it can therefore be used on all type of leather.
POSYNTAN FMK confers good fullness and elasticity to the grain and helps the dyes dispersion.
POSYNTAN FMK is especially recommended on softy leather, nappa and garment leather.
The percentage of use varies from 2% to 10% depending on uses and on required items.
