SI Group supplies Low Viscosity and Hexa-functional Aliphatic Urethane Acrylate. SI Group is an ISO 9001, 14001 and 18000 registered company. Low Viscosity and Hexa-functional Aliphatic Urethane Acrylate is used in ink and coatings. Low Viscosity and Hexa-functional Aliphatic Urethane Acrylate Acrylate has a fast cure speed and excellent chemical resistance. It improves adhesion.