| 摘要 |
Case 3-10904/GC 805/+ Canada Hindered phenol hydrazones and compositions stabilized therewith Hindered phenol hydrazones of the formula wherein R1 and R2 are alkyl of 1 to 8 carbons or R1 can also be hydrogen, n is 1 to 6, R' is hydrogen or alkyl, R3 is alkyl, phenyl, substituted phenyl, alkylenethioalkyl or alkylenethioether ester of a carboxylic acid or a group where T is a direct bond, alkylene, sulfur or oxygen interrupted alkylene or phenylene, said compounds being useful as diene rubber stabilizers. |
