POLYMERIC COMPOSITION FOR PREPARING FILMS Russian patent published in 1999 - IPC

FIELD: various industries, more particularly agriculture. SUBSTANCE: polymeric composition for preparing ethylene (co)polymer based films comprises active additive. Active additive is three-component mixture A-B-C wherein A is oxide, organic or inorganic europium salt; B is compound from class of beta-diketones; C is compound from class of bidentate nitrogenous heterocycles or from some trialkyl(phenyl) substituted phosphinoxide at A:B: C weight ratio: one europium atom in component A accounts for three molecules of component B and one molecule of bidentate nitrogenous heterocycle or two molecules of trialkyl or triphenyl substituted phosphinoxide of component C, ratio of polymer to active additive ratio being as follows, wt.%; said three-component active additive, 0.05-1.0; and ethylene copolymer, the balance. Films prepared from the claimed composition absorb at least 90% UV constituent of incident light transforming it to red spectral region. EFFECT: improved properties of the polymeric composition. 7 cl, 3 ex