Capa 6430 Caprolactone homopolymer Solvay Caprolactones PU - Prepolymers >> Caprolactone based ADHESIVE >> Hot-melt ADHESIVE >> Reactive system CAPA® 6430 is a high molecular weight linear polyester derived from caprolactone monomer. The molecular weight is approximately 43,000 and the product is supplied in granular form and can be used in a variety of adhesive applications. It is compatible with a wide range of common thermoplastics, and soluble in several common solvents. CAPA® 6430 is a high molecular weight linear polyester derived from caprolactone monomer. The molecular weight is approximately 43,000 and the product is supplied in granular form and can be used in a variety of adhesive applications. It is compatible with a wide range of common thermoplastics, and soluble in several common solvents.