Mtengo wa HP1218ndi oligomer ya urethane acrylate yomwe imalepheretsa zinthu zabwino kwambiri monga
osakhala achikasu, kukana bwino kwa hydrolysis, kukana kuzizira bwino, kukana nyengo yabwino, kusinthasintha bwino, ndiotsikafungo. Poyerekeza ndi zinthu zofananira pamsika, chinthu chofunikira ndikusinthasintha kwabwino.