BETA THREE-WEDGE CRYSTALLINE MODIFICATION OF 2,2′,2″ NITRILO [TRIETHYLTRIS (3,3′,5,5′-TETRA-TERT-BUTYL-1,1′-BIPHENYL-2,2′- DIYL) PHOSPHITE] Russian patent published in 1998 - IPC

FIELD: stabilization of organic materials sensitive to oxidative, thermal or light- induced destruction. SUBSTANCE: compound I is prepared by heating melt of said compound at temperatures from 170 to 200 C by crystallization of new beta crystalline modification. Said crystalline modification is used in stabilized composition as stabilizer in amount from 0.01 to 10% based on total weight and also contains organic matter subjected to oxidative, thermal of light-induced destruction. The method also uses said crystalline modification in amount from 0.01 to 10% based on total weight. EFFECT: improved properties of the title modification. 2 cl, 5 ex, 5 tbl