Use of Long-Chain Synthetic Phenolic Antioxidants to Produce Chromium Tanned Leather without Risk of Hexavalent Chromium Formation

Simple item page
dc.contributor.authorCompte, Irene
dc.contributor.authorTorras, Quim
dc.contributor.authorIzquierdo Buera, Francina
dc.contributor.authorCuadros Domènech, Rosa
dc.contributor.authorBacardit i Dalmases, Anna
dc.date.accessioned2026-01-27T11:30:32Z
dc.date.available2026-01-27T11:30:32Z
dc.date.issued2023
dc.descriptionEs disposa del permís exprés de l’editor per a la inclusió i difusió d’aquest document al repositori institucional.
dc.description.abstractChromium tanned leather is the widest form of leather tanning across the world, but it might involve a risk of hexavalent chromium formation, which is restricted in leather products above 3 mg/kg. Among other conditions, certain processes might lead to the oxidation of natural fats or fatliquoring agents with unsaturated carbon-carbon bonds, thus generating free radical molecules that can contribute to the Cr(III) oxidation to Cr(VI). The auto oxidation of unsaturated lipids is promoted by exposure to high temperatures and light, specifically UV radiation. Among other relevant manufacturing practices, the addition of synthetic phenolic antioxidants (SPAs) during the synthesis of fatliquoring agents or during leather manufacturing can be a relevant tool for preventing lipid auto-oxidation.The efficiency of the long-chain synthetic antioxidant 1135 (AO1135, CAS RN degrees 125643-61-0) has been assessed for Cr(VI) prevention. The performance of AO1135 has been tested in two different skin types (sheepskin, woolly sheepskin), with two different fatliquoring agents (unprotected and protected against oxidation). The protected fatliquoring agent was formulated with AO1135. Also, two commercial products that contain the AO1135 in its formulation have been applied to leathers. Upon completion of the post-tanning process, the leathers have undergone two different thermal ageing processes.AO1135 has been verified an effective SPA for Cr(VI) prevention and its application during the post-tanning process does not alter the visual aspect of the leathers. Otherwise, if the post-tanning recipe does not contain well-sourced raw materials or Cr(VI) prevention tools, unsaturated fatliquoring agents or natural fats present in the skins can be a cause for Cr(VI) formation.
dc.identifier.doihttps://doi.org/10.34314/jalca.v118i10
dc.identifier.issn0002-9726
dc.identifier.urihttps://hdl.handle.net/10459.1/469464
dc.language.isoeng
dc.publisherThe American Leather Chemists Association
dc.relation.isformatofReproducció del document publicat a https://doi.org/10.34314/jalca.v118i10
dc.relation.ispartofThe Journal of the American Leather Chemists Association, 2023, vol. 118, núm. 10, p. 439-449.
dc.rights(c) The American Leather Chemists Association, 2023
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess
dc.subjectLeather tanning
dc.subjectSynthetic antioxidant
dc.titleUse of Long-Chain Synthetic Phenolic Antioxidants to Produce Chromium Tanned Leather without Risk of Hexavalent Chromium Formation
dc.typeinfo:eu-repo/semantics/article
dc.type.versioninfo:eu-repo/semantics/publishedVersion
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
jalca_a2023v118n10p439.pdf
Size:
191.4 KB
Format:
Adobe Portable Document Format
Description:
Download
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
639 B
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Articles publicats (Enginyeria Industrial i de l’Edificació)
Articles publicats (Grup de Recerca A3 Leather Innovation Center)