Cyclic carbonates as crosslinkers for biobased feedstocks
For a successful and competitive application of bio-based adhesive systems in the wood-based panel industry, reactive, preferably water-soluble crosslinkers are required, which also cure thermally with more complex raw materials and without splitting off by-products.
The recently launched VerCyCa research project is investigating the use of polyfunctional cyclic carbonates as crosslinkers for low-molecular-weight raw materials. Both the carbonates and the raw materials to be crosslinked are bio-based. The reactivity of the polyfunctional, cyclic carbonates is adjusted by their structure (residue R). The residue R also influences the solubility of the carbonates. For use in aqueous systems, the solubility is made possible, if necessary, by the preparation of prepolymers. Low-molecular raw materials are crosslinked, which have different nucleophilicity due to the free reactive groups.
Direct application in the wood-based panel industry
At the end of the project, findings are available on the reactivity of the carbonates as a function of their structure with different reactive groups, as well as reactive adhesive systems for direct application in the wood-based panel industry. The bonding strength and thus the use in the wood-based materials industry will be determined on the basis of mechanical-physical characteristic values.
For more information, visit the website of the Institut für Holztechnologie (Institute for Wood Technology) Dresden.
Event tip
Bio-based systems are also the focus of the EC Conference Bio-based and Water-based Coatings on November 14 and 15 in Berlin, Germany. At the conference, you will learn about the latest developments in bio-based and water-based coatings.
