12 Apr 2021

CO₂NVERGE®: CO₂-based polycarbonate polyols

Innovative CO₂-containing polyols produced by Nordmann partner Aramco Performance Materials are used to make high-performance polyurethane adhesives. Their strength and excellent hydrolytic resistance make them outstanding choices for the most demanding coatings, adhesives, sealants and elastomers. Nordmann distributes CO₂NVERGE® polyols in Germany.

Aramco Performance Materials uses carbon dioxide as a raw material in the synthesis of its CO₂NVERGE® line of polycarbonate polyols. CO₂NVERGE® polyols are used to prepare polyurethanes suitable for a variety of applications. In particular, they are used in polyurethane adhesives that exhibit outstanding lap shear strength compared with conventional polyether and polyester based polyurethanes. CO₂NVERGE® polyols exhibit effective adhesion to a variety of substrates, including aluminum, polycarbonate, polyvinyl chloride and wood.

In addition, the unique CO₂NVERGE® structure provides excellent hydrolytic resistance in water immersion tests. CO₂NVERGE® polyols retain 100% of their mechanical properties for 90 days in water at 70°C. The combination of these properties makes CO₂NVERGE® polyols suitable for applications with demanding environmental stability requirements, such as textile and footwear bonding.

Currently, CO₂NVERGE® polyols are available in two grades: 2012-112 and 2520-56. 2012-112 is a high-viscosity, 100% polycarbonate polyol most suitable for hot-melt applications. 2520-56 is a polycarbonate/polyether copolymer polyol that is used in applications requiring lower viscosity. Combining 2520-56 and 2012-112 allows formulators the ability to fine-tune the polyurethane properties and viscosity.