ADDUCTS OF TRIS-HEXAFLUOROALETYL ACETONATES-LANTHANIDES WITH PHOSPINE OXIDE AS ACTIVE ADDITIVE TO POLYMERIC MATERIALS TRANSFORMING ULTRAVIOLET IRRADIATION TO VISIBLE SPECTRAL REGION Russian patent published in 1996 - IPC

FIELD: organolanthanum compounds, more particularly adducts of tris-hexafluoroacetyl acetonates- lanthanides with triphenyl-phosphine oxide of formula: wherein Ln is Sm (3+); E(+3); Tb(3+), Dy(+3). SUBSTANCE: said compounds are used as active additions to polymers that transform ultraviolet irradiction to visible spectral region. The resulting compounds are prepared from hexafluoroacetone, triphenyl oxide and chloride of the corresponding lanthanide in ethanol, the ratio of components being 1: 4: 2 at 50-60 C. When tested for stability to ultraviolet irradiaction, the resulting compounds showed that they have better luminescence intensity coefficient (from 3.25 to 20 times). EFFECT: increased yield capacity of agricultural crops and accelerated periods of growth and germination thereof. 2 tbl