| 摘要 |
Compounds of the formulae …<CHEM>… wherein X is oxygen or sulfur, R1 is C1-C12 alkyl, C7-C10 aralkyl, C5-C12 cycloalkyl, or R2; R2 is phenyl, naphthyl or phenyl substituted by (-R3)n wherein n is 1, 2 or 3 and R3 is C1-C12 alkyl, C1-C12 alkoxy, C1-C12 alkylthio, chloro, bromo, cyano or nitro, and R is C1-C12 primary or secondary alkylene or phenylene di-C1-C6-primary or secondary alkylene; …<CHEM>… wherein X and R2 are the same as before, and R4 is C1-C12 primary or secondary alkyl or said alkyl radical substituted by formyl or C2-C7 acyl, C7-C10 aralkyl, C5-C12 cycloalkyl, or R2; R5 is hydrogen or -SR4 and R6 is phenylene, mono- or di-C1-C6 alkyl substituted phenylene, C2-C6 alkylene, phenylene-methylene, or C1-C6 alkylene diphenylene or C1-C6 @alkylene@ di(mono- or di-C1-C6 alkyl substituted phenylene), or …<CHEM>… wherein X, R1, R4 and R5 are the same as before, and R7 is phenylene, mono- or di-C1-C4 alkyl substituted phenylene, or C1-C6 alkylene diphenylene, are useful as inhibitors of the premature vulcanization of rubber. |
