MONOMER AND OLIGOMERIC BISPHOSPHITES AS STABILIZERS FOR POLYMERS AND LUBRICANTS

摘要

New compounds of formula (I) are described: BR/ (CF DRAWING IN BOPI) BR/ in which: BR/ n is a number from 1 to 6, BR/ R is a divalent bridge having one of the formulas: BR/ (CF DRAWING IN BOPI) BR/ m is a number from 1 to 5, BR/ R1, R2, R3 and R4 independently represent an alkyl residue C4 -C22, C7 -C9 phenylalkyl, C5 -C8 cycloalkyl or (C1 -C4 alkyl) -C5 -C8 cycloalkyl, or BR/ R1 and R2 and / or R3 and R4 together represent an alkylene residue in C2 -C9 or a group of formula BR/ (CF DRAWING IN BOPI) BR/ and their use as stabilizers of organic polymers and as additives in lubricants, hydraulic fluids or fluids for the treatment of metals.