FIELD: physics.
SUBSTANCE: composition which absorbs UV-radiation at 390 nm contains a matrix based on one or more polyesters selected from a group consisting of polyethylene terephthalate, polyethylene isophthalate, polypropylene terephthalate, polybutylene terephthalate, poly(1,4-cyclohexylene dimethylene terephthalate) and polyethylene-2,6-napthylene dicarboxylate and mixtures thereof, where polyethylene naphthalate (PEN) is present in an amount of approximately 0.2 wt % in terms of total weight of the composition, and polyoxyalkylene UV-absorber is present in amount of approximately 0.1 wt % in terms of total weight of the composition, methods of preparing said composition (versions) and a product which prevents passage of UV light at 390 nm.
EFFECT: higher resistance of products to UV radiation, improved yellowness index after SSP.
31 cl, 1 dwg, 1 tbl, 1 ex
