POLYMERIC COMPOSITION FOR MAKING FILM FOR GREEN HOUSES Russian patent published in 1999 - IPC

FIELD: new covering materials for green houses. SUBSTANCE: polymeric composition comprises thermoplastic and luminophore, the ratio of components being as follows (wt %) 90-99.9 thermoplastic and mixture of luminophores, the balance. Luminophore is mixture of 5-30 wt % luminophore having blue luminescence with maximum spectral radiation range within 425-490 nm and 70-95 wt % luminophore having orange-red luminescence with maximum spectral radiation range within 590-665 nm. Said composition allows for balanced vital cycle of plants depending on type of plants and stage of development thereof. EFFECT: improved properties of the polymeric composition. 4 cl, 8 ex