Dr Sudipto Das
Global Technology Leader for Reactive Hot Melt Adhesives
Dr. Sudipto Das is the global R&D leader for reactive hot melt technology and global R&D business partner for the woodworking, panels, and composite markets at H.B. Fuller. He has extensive knowledge in the formulation of polyurethane adhesives, specifically reactive hot melt adhesives (RHM), for a wide variety of markets such as woodworking, durable assembly, electronics among other. He holds a PhD in polymer science & engineering from Virginia Polytechnic Institute and State University, U.S. He has authored several patents and have worked on multiple global platform projects. He currently resides in Luneburg, Germany managing the RHM R&D for Engineering Adhesives business unit.
Sustainable Reactive Hot Melt Adhesives
Regulations, customers, and end-users are driving adhesive solutions to become more sustainable. To address this growing trend, H.B. Fuller have developed a novel approach to sustainable reactive polyurethane hot melt adhesives in collaboration with several strategic raw material suppliers, to reduce the carbon footprint right at the beginning of the value chain. Our route includes the use of polyols derived from bio-sourced raw materials such as corn, soybean, wheat, or castor oil, polyols partially derived from recycled PET bottles, combined with the use of bio-mass balanced Methylene diphenyl diisocyanate (MDI) as a replacement of fossil-based isocyanates. The uniqueness of our approach is the incorporation of all the three above mentioned sustainable raw materials together in our polyurethane hot melt formulation without sacrificing the final properties of these adhesives, which allows our customers to use these with minimum changes to their processes We can achieve sustainability rates up to 93%. Currently, these products are targeted for textile applications, but this concept can be applied to other markets such as woodworking, panels, automotive, electronics, etc. We can use this novel approach in both conventional and low monomer (<0.1% free residual isocyanate monomer) polyurethane reactive hot melt products.
Co-author(s): Pierre-Yves Jaubard; Laurent Chalumeau
Thursday, 14 September 2023, 14:30 - 15:00