UNILINK 4100 (CAS: 101-96-2) is a liquid aromatic diamine developed as slow-reacting chain-extender for TDI and MDI-based polyurethane elastomers. As a di-functional diamine, UNILINK 4100 builds linear polymer networks, allowing the polyurethane formulator to control the degree of cross-linking by the use of higher functional isocyanates and polyols.
®: UNILINK is a trade mark of Dorf Ketal (www.dorfketal.com)
ASPARTYS 420 (CAS: 136210-30-5) is an amino-functional aspartic resin showing a high reactivity towards aliphatic isocyanates. ASPARTYS 420 is characterised by a medium viscosity and an excellent UV-light durability, making it particularly suitable to the formulation of high quality top coats exposed to direct UV-light.