Reactive polyamide hardener is used in the formulation of epoxy resin systems. It is made from a castor oil and other amines, which is a type of amine that is derived from a reaction between a fatty acid and a polyamine. This hardener is known for its high performance, durability, and chemical resistance, and is commonly used in a variety of applications, such as protective coatings, adhesives, and composites. It is able to provide excellent adhesion to a variety of substrates, including steel, concrete, and other metals. It is used as an impregnating agent for adhesives, coated floors, lining materials, and repairs