Articles - Leather Technology Magazine Nº78

Latest developments in non-chrome articles

Enrique Comes¹, Olga Ballús¹, Ramón Palop¹

¹Cromogenia Units, S.A, Farell No. 9, Barcelona, Spain,
Telephone: 34-93-2643464,
e-mail: curtidos@cromogenia.com

Latest developments in non-chrome articles

Key Words: Wet white, Aldehydes, Footwear, Upholstery, Physical Resistance

ABSTRACT

There is a growing demand for the manufacturing of chrome-free leather from the Tanning Industry, especially for footwear and upholstery.
In this study, in the first place, we have optimized the conditions of application of two aldehyde polymers (P.W.W-1 and P.W.W-2).
A W. W. process was developed therefrom, where it is used as a single product.
In the second place, an OPTIMAL retanning process was studied, assessing the influence of 11 synthetic retanning agents, as well as tara and mimosa.
In the third place, and as a consequence of the foregoing, a complete process for non-chrome leather is proposed, which is adaptable to the different articles required.