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Search for Successfully Implemented Alternatives

You can use the free text search function to find information in the case story database. Most suitable are: substance name and other substance identifier (EC- and CAS-number). You can refine your search after first entry for sector-, function- and process-categories. The case studies are meant to serve as source of inspiration and ideas for substitution. The alternatives are constantly being developed further. We therefore recommend that you to check in each individual case whether an alternative is suitable for your applications and purposes. If you are aware of any other relevant information that is not mentioned in the current case story, please contact SUBSPORTplus.

In order to utilize information in the best way, please take note of the SUBSPORTplus methodology on case stories!

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Glues from renewable resources for panel board manufacture

Urea-formol adhesives are largely used in the wood products industries. Construction materials are the main source of formaldehyde emissions in the indoor environment. Therefore, it is necessary to find new natural alternatives to produce wood adhesives. The project allowed developing and validating extraction process for tannins, based on aqueous extraction, and lignin. These extracted compounds were successfully inserted in adhesives to develop a formula without formaldehyde. The mechanical properties of the panel board produced with this new adhesive responded to European standard.

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Formaldehydfreie Bindemittel für die Herstellung von Holzwerkstoffen

Harnstoff-Formaldehyd Klebstoffe sind in der holzverarbeitenden Industrie weit verbreitet. Baumaterialien stellen nach wie vor eine wesentliche Quelle von Formaldehydabgabe in Innenräumen dar. Es ist deshalb notwendig, alternative formaldehydfreie Bindemittel für Holzwerkstoffe zu entwickeln. Das französische Projekt "Panneaux verts" entwickelte einen Extraktionsprozess für Tannine, der auf Flüssig-Extraktion und Lignin basiert. Diese extrahierten Verbindungen wurden erfolgreich in Klebstoffe eingebracht und damit formaldehydfreie Kleber entwickelt. Die mechanischen Eigenschaften von Holzfaserplatten, die mit dem neuen Klebstoff hergestellt wurden, entsprachen der europäischen Norm.

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