| 摘要 |
Ortho-alkylated phenyl phosphonites of the formula <IMAGE> wherein R1 is alkyl, phenyl or phenyl substituted by alkyl, R2 is tertiary alkyl or phenylalkyl, and R3 is hydrogen, alkyl or phenylalkyl are useful as stabilizers for organic polymers and lubricating oils, particularly as processing stabilizers for polyolefins.
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