Miwon has developed a new range of 6-functional urethane acrylates which are both PETIA-free and organotin-free. "Miramer PU6140NT", "PU6510NT" and "PU6530NT" are aliphatic urethane acrylates, while "Miramer PU6520NT" is an aromatic urethane acrylate. All have significantly lower viscosity than earlier 6-functional products such as "Miramer PU610". In tests with the drop shape analyser they display less curl.