CNSL-based Mannich polyols are lower in viscosity and have a broader range of hydroxyl values than petro-based analogues, and offer excellent field processing, good dimensional stability, low friability, good flow, very uniform fine cell structure and high closed cell content. Moreover, the surfactant-like properties from CNSL derivatives and their inherent fast reactivity allows foam formulators to reduce the use of expensive additives such as blowing and gelling catalysts as well as surfactants.
Due to the nature of the hydroxyl groups within each derivative, CNSL-based Mannich polyols exhibit reaction profiles comparable or faster than standard commercial Mannich polyols, thus being suitable for the majority of rigid polyurethane systems, including PIR systems. Moreover, the combination of aromatic content and long alkenyl chain of CNSL Mannich polyols delivers comparable or superior compression strength at similar density levels.
The high aromatic content of CNSL-based Mannich polyols and overall composition results in excellent fire resistance properties that can be seen by lower burning rates and less flammability than petro-based counterparts.