3-ARYLBENZOFURANONES, STABILIZED COMPOSITION, AND METHOD OF STABILIZATION Russian patent published in 1999 - IPC

FIELD: chemical industry. SUBSTANCE: described are new compounds of general formula I wherein R₁,R₂,R₃,R₄,R₅,R₆,n are as defined in claim 1 which are useful as stabilizers of organic materials, predominantly polymers and lubricants and for protection against oxidative, thermal and light induced decomposition. Described are composition based on compounds of formula I and method of stabilization and use thereof. EFFECT: new 3- arylbenzofurans useful for use stabilizers of organic materials exposed to oxidative, thermal or light-induced decomposition. 19 cl, 16 ex, 5 tbl