CYMEL® UI-20-E

• High film build
• Low odor
• Fast drying
• Excellent block resistance
• Low formaldehyde release

Pot Life

• To extend catalyzed pot life of the formulation, addition of primary alcohols, such as n-butanol, ethanol, and methanol, is required at concentrations of 10-5% on total resin solids.
• Faster evaporating alcohols will improve speed of dry.

• Acid curing wood coating applications

• CYMEL® UI-20-E Resin is a very effective crosslinking agent for backbone polymer resins containing hydroxyl functional groups, such as alkyd, polyester or acrylic resins.
• CYMEL® UI-20-E Resin has high reactivity and a high tendency for self- condensation providing fast drying films with good gloss, hardness and block resistance.
• The optimum level of CYMEL® UI-20-E Resin in an acid curing wood coating formulation should be in the range of 25-35% on total resin solids.
• To obtain formulations with optimum resistance properties, addition of a melamine resin, such as CYMEL MB 98 resin, at levels of 5-10% on total resin solids is recommended.

• CYMEL® UI-20-E Resin responds best to sulfonic acid catalysts, like CYCAT' 4040.
• Generally, 6-10% CYCAT 4040 catalyst on total binder solids of the formulation is sufficient to obtain fast drying behavior at room temperature.

• CYMEL® UI-20-E Resin has a shelf life of 24 months from date of manufacture when stored at temperatures between 5℃ and 30C.
• Although low temperatures are not detrimental to stability, the viscosity of the product will increase making the resin more difficult to pump or pour.
• Product viscosity can be returned to normal by gentle re-warming, however, care should be taken to avoid excessive localized heating as this can cause an irreversible increase in viscosity.