Specialty chemicals company LANXESS has developed a series of new MDI polyether prepolymers, which contain renewable bio-based raw materials. The product is sold under the brand name Adiprene Green and is suitable to replace existing fossil-based polyether prepolymers to produce highly durable polyurethane elastomers.
The overall goal of developing Adiprene Green is to develop a series of bio-based prepolymers that enable polyurethane processing equipment to produce components with a reduced carbon dioxide footprint. Due to the use of starch-based polyether polyols, carbon dioxide emissions may be reduced by 20% to 30% compared to fossil-based prepolymers. The proportion of bio-based raw materials is between 30% and 90%, depending on the hardness of the target material combination. At the same time, the existing polyurethane processing capabilities will maintain applicability, and the final performance of the polyurethane elastomer will be similar to that of the fossil-based polyether elastomer with mature technology, even with better performance.
Dr. Markus Eckert, Head of LANXESS` Polyurethane Systems Business Unit, said: “At LANXESS, we have developed a clear strategy for sustainable development. Our goal is to maintain climate neutrality by 2040. We are establishing and successfully working to protect the climate. . The first major projects have already started. By using our new Adiprene Green products, customers can benefit from our climate-neutral journey."
Adiprene Green prepolymers are easy to handle-the same as conventional prepolymers. No need to modify material handling, process temperature or mixing ratio. In addition, the reactivity curve and demolding time are similar to polyether prepolymers based on fossil raw materials.
When reacted with 1,4-butanediol, a series of polyurethane elastomers with a hardness of 40 Shore A to 60 Shore D can be obtained. As the polyurethane material combination has a wide range of uses, Adiprene Green can be mixed by hand or machine. Moreover, the prepolymer can be treated with LANXESS’ Vibracat catalyst. The Adiprene Green series products are ideal for demanding applications such as roller sleeves, wheels, compression sleeves or non-pneumatic tires.