A compound belonging to the group of structurally hindered amines (HA) was
synthesized with the help of new technologies and investigated as a photost
abiliser of polypropylene. The preservance of toughness of films and the qu
antity of carbonyl groups were estimated in accordance with the IR spectros
copic data in the process of exposure to ultraviolet radiation. A higher ef
ficiency of bis-(2,2,6,6-tetramethyl-4-piperidinyl)terephtalate compared to
industrial stabilisers is demonstrated.