Prevention of chromium(VI) formation by improving the tannery processes
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hdl:2117/12916
Tipus de documentText en actes de congrés
Data publicació2006
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Abstract
This work has been funded by the European Commission through the Chrom6less
Project (CRAFT -1999-71638).
The objectives of the project were:
- Establishment of the analytical methodology which provided reproducible
results that may be free of interferences.
- Identification of the factors that facilitated or impeded the transformation of
Cr(III) to Cr(VI).
- Establishment of the best conditions that allowed the production of
chromium(VI) free leather, even during the life of the product, in contact with
environmental agents such as light or heat.
The following partners participated in the project: Inpelsa, Dercosa, Proquip, Igualada
Leather Technology School, CID-CSIC and Miguel Hernandez University, from Spain,
Gmelich, Knoll Sitzleder, and Lederinstitut Gerberschule Reutlingen from Germany,
and Conceria Il Cigno, Calzaturificio Accademia and Stazione Experimentale from
Italy.
Hundreds of samples have been analysed during the project. In order to study the
influence of several factors in chromium (VI) formation, a lot of skins/hides have been produced. Several leather articles (hides for clothing, footwear, upholstery, leather goods and furniture upholstery and skins for suede and double face)) have been
manufactured free from Cr (VI).
The main results obtained were:
- The new analytical method CEN/TS 14495 has been validated.
- Protective measures for the prevention of chromium (VI) formation have been
identified.
- New formulations for several hides/skins have been developed.
- A handbook for the production of chromium (VI)-free leather has been
published.
The main conclusions of the project were:
- The Chrom6less Project has shown that most of the skins/leathers did not
contain hexavalent chromium.
- It is now possible to confidently determine the Cr(VI) content in all kinds of
leather regardless of their colour.
- The application of protective measures developed in the Project allows leather to
resist the effect of ageing without the formation of Cr(VI).
CitacióFont Vallès, Joaquim. [et al.]. Prevention of chromium(VI) formation by improving the tannery processes. A: Eurocongress of the International Union of Leather Technicians and Chemists Societies (IULTCS). "II Eurocongress of the International Union of Leather Technicians and Chemists Societies (IULTCS)". Istanbul: 2006.
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Prevention of chromium VI formation .pdf | 25,27Kb | Accés restringit |