| abstract |
Useful phosphorous compounds with stabilizers for polymeric materials against degradation caused by thermal or mechanical stresses. Said compounds are of formula IIIa **FORMULA** where n is 4 or 5, R{sub,1} is -(4-phenyl)phenyl or 2-(2,4,4-trimethyl)-pentyl, menthyl, norbornyl, pinenyl, cyclopentyl, cyclooctyl or cyclododecyl. Also described is a polymeric composition comprising a) at least one compound of formula IIIa and b) a polymeric material. |