METHOD OF ULTRAHIGH-MOLECULAR WEIGHT POLYETHYLENE (UHMWPE), MODIFIED WITH NANOSIZED TANTALUM PENTOXIDE PARTICLES Russian patent published in 2014 - IPC C08L23/06 C08J3/07 C08J3/20 C08K3/22 B82Y30/00 

FIELD: chemistry.

SUBSTANCE: invention deals with ultrahigh molecular weight polyethylene (UHMWPE), modified with nanosized particles of tantalum pentoxide. It is applied for the obtaining polycomposite materials, which can be applied in microelectronics, medicine and other fields. It is obtained by the addition of benzyl alcohol to a UHMWPE benzene solution. The formed reaction mixture is mixed at a rate of 400-500 rev/min in boiling for 5-6 hours. Then, it is filtered, washed with benzene, the solvent is distilled. After that, a benzene solution of tantalum pentachloride is added to the reaction mass in a quantity corresponding to the molar ratio of tantalum pentachloride to benzene alcohol, equal to 1:5-5.3. Then the obtained reaction mass is mixed at the same rate in boiling for 3-4 hours, cooled and the target product is separated by filtering, extraction with chloroform and vacuum distillation of the solvent.

EFFECT: extension of application fields of materials with higher physical-mechanical properties.

3 dwg, 2 tbl, 2 ex