Novel Polyurethanes from Bio-Renewable C18 Polyols

摘要

Driven by consumer and industrial demand for environmentally responsible products, manufacturers of polyurethane products are actively searching for high-performing, bio-based alternatives to petroleum-based materials. Here, we report on polyurethanes from a renewable, plant-based source - Elevance Inherent? C18 Diacid. Unlike traditional polyester urethanes based on shorter chains, C18 diacid-based polyols yield very hydrophobic and oleophilic urethanes with high resistance to hydrolytic cleavage. In contrast to dimer acid polyols, the linear structure of C18 diacid-based polyols results in polyurethanes with excellent tensile strength and stiffness. By modifying the chemical composition of the C18 polyols through variation in the diol, a series of thermoplastic polyester urethanes (TPUs) with a wide range of Shore A hardness values is produced and characterized. In addition, we report on reactive hot melt adhesive (HMA) formulations from C18 polyols and their performance in lap shear adhesion testing.