Coatings, sealants & adhesives

Moisture is the enemy of many coating, sealant, adhesive, and elastomeric products. It can come from pigments, fillers or ambient air during production. Isocyanates in polyurethane-based formulations react with this moisture and generate CO₂, which can cause blistering and degradation.

Honeywell UOP activated powders and pastes are proven to help you combat these issues. Our pastes are a mixture of molecular sieves in castor oil, which simplifies blending with the polyol and other ingredients and dramatically reduces atmospheric moisture pick-up during handling and mixing.

UOP MOLSIV^TM adsorbent and activated powders remove moisture to extremely low levels with no unwanted reactions. Use at 1-5% by weight, depending on the starting water concentration in the polyol, pigments and fillers.