abstract |
Substituted 3H-1,3,2-oxazaphospholidines of formula I <IMAGE> (I) where R1, R2, R3 and R4 are independently hydrogen, alkyl, cycloalkyl, phenylalkyl or aryl, n is 1 to 4 and T is an n-valent aliphatic or aromatic hydrocarbon radical are effective in stabilizing organic materials against the deleterious effects of oxygen, heat and/or actinic radiation. |