ALFASIN W

ALFASIN W TECHNICAL DATA SHEET Page 2

Retanning Resin rev.12 from 31/03/13

METHOD
We recommend working with skins neutralized at a pH between 5.3 and 5.5 and a uniform blue cut with methyl orange. For optimum efficiency we recommend working with one bath only for retanning, dyeing and fatliquoring. Although the general method is identical for all manufacturing processes, the quantities of retanning compounds as well as fatliquor may vary according to the type of hide used as well as the shaving thickness of the item to be produced. Below is a general method we recommend for upper shoe leather which can be used as a basis for other processes
Water 35°C 50%
Retanning syntans x% 40’
add
Pre-fatliquor x% 30’
add
Penetrating dye x% 30’
add
ALFASIN W x% 90'
add
Water at 60°C. 100%
Fatliquor x% 60’
add
Formic acid x% 30’
add
Cationic agent 0,3% 20'
add Dye sandwich

Rinse with cold water
Unload the skins; horse and leave for 24h
Follow with mechanical operations

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Chemical-physical properties of the product have been determined in accordance with internal procedures by methods of analysis provided by national and / or internationally recognized standards. The information contained in this data sheet is based on our current knowledge. Given the multiplicity of factors that can influence the processing and use of our products, it is the responsibility of the customer to carry out its part tests and controls.
We cannot endorse any responsibility consequent to an incorrect use of the product.