Empol 1043 Trimer acid 68937-90-6 Cognis Polymer intermediates SEALANT EMPOL ® 1043 Trimer Acid has a polybasic acid content typically more than 70% and is useful in applications where crosslinking is desired. End uses where color is not an issue benefit from its high functionality and flexibilizing effect. Corrosion Inhibitors Epoxy Curing Agents Fuel Additives Lubricants Lubricant Additives Coatings/Sealants Foamed Polyurethanes Trimer acid. Used in sealants. Offers crosslinking, high functionality and flexibilizing effect.