Polyurethanes (PUs) are among the most widely known and manufactured polymers in industry, particularly in the field of rheological additives. However, they require the use of highly toxic isocyanates, are poorly recyclable, and raise environmental and safety concerns. Several alternatives, such as blocked and aqueous isocyanates, show promise, but their large-scale deployment is limited by the alcohol reagents used, which are mostly not bio-based. In this context, non-isocyanate polyurethanes (NIPUs), obtained from diglycol dicycarbonate (DGDC), appear to be the most suitable alternative to conventional PUs. ARKEMA’s Crayvallac® rheological additives are organo-gelling agents based on polyamide chemistry containing a proportion of bio-based monomers derived from vegetable oils. The goal of the internship is to achieve 100% bio-based monomers.
Actualités
- Offre de thèse : Additifs pour une meilleure durabilité des peintures antifouling – ICGM, Montpellier (19/04/2026)
- Offre de thèse : Etude du rôle des interfaces dans la cristallisation sous confinement de polymères – PIMM, Paris (19/04/2026)
- Postdoctoral Fellow in Polymer Electrolytes for Advanced Battery Systems – Paul Scherrer Institute (PSI) and the Luxembourg Institute of Science and Technology (LIST) (19/04/2026)
- Journées des Jeunes Polyméristes du Nord, 2 et 3 juillet, Cité Scientifique Villeneuve d’Ascq
- MATÉRIAUX 2026 / colloque national GFP 2026 : Nouvelle date limite de soumission – jeudi 7 mai 2026