Strain-strength properties and microhardness of oligourethane acrylate copolymers

It is shown from analysis of the microhardness and strain-strength characteristics of three-dimensional copolymers of oligourethane crylates obtained by curing uunder UV-irradiation that the properties of these polymers depend essentially on the composition and chemical nature of the comonomers. The advantage of elastic films compared with glassy ones when used as protective coatings for cine-photo materials is shown.