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- Title
EXPERIMENTS TO OBTAIN NEW BIOPRODUCTS BASED ON PROTEIN EXTRACTS FROM WET-WHITE LEATHER WASTE INTENDED FOR THE TOTAL OR PARTIAL REPLACEMENT OF PHENOL FORMALDEHYDE RESINS IN WET FINISHING OF LEATHER.
- Authors
CRUDU, Marian; DEACONU, Marian; PRUNEANU, Melinda; CONSTANTIN, Andra Manuela; GURĂU, Dana
- Abstract
Leather retanning is a key operation in the wet finishing stage, playing a very important role in diversification of assortments, but at the same time using complex chemicals can induce important eco-toxic effects especially in the liquid effluents (residual float). This paper presents some of the achievements related to the expansion of eco-friendly auxiliary product range for wet finishing of leather (filling-retanning) with predominantly natural (protein) components, combined with metal oxides other than Cr2O3 and without phenolic compounds, concomitantly with the leather industry's advance towards circular economy and increasing eco-efficiency. An experimental model was developed for functionalization of collagenic materials obtained by acid hydrolysis of pre-tanned wet-white bovine hide waste in order to obtain new bioproducts intended for the replacement of phenolic compounds for wet finishing of leather (filling-retanning).
- Subjects
BIOLOGICAL products; PROTEINS; LEATHER; PHENOL; FORMALDEHYDE
- Publication
Leather & Footwear Journal / Revista de Pielarie Incaltaminte, 2019, Vol 19, Issue 4, p177
- ISSN
1583-4433
- Publication type
Article
- DOI
10.24264/lfj.19.4.2