Biobased Polyol with Self-crosslinking Functionality

The need for green and environmen- tally safe coatings creates an oppor- tunity for biobased raw materials. Vegetable oil polyols (VOPs) are the major source of biobased raw materials for making polyurethanes.1

Despite their wide commercial avail- ability, they have not been utilized for making water-based polyurethane (PU) coatings, because, VOPs have no perfor- mance-enhancing functional group in the molecular architecture.2 Therefore, they are unable to meet the stringent corrosion-, UV-, and solvent-resistance performance requirements.

In this short communication, we present a new class of biobased polyol with a crosslinking functional group that is free from toxic chemicals and has superior performance. This is achieved by reacting a keto acid with a glycidyl functional fluids derived from biobased sources. We also present the utilization of the polyol in making water-based polyurethane dispersion (PUD).