| abstract |
New compounds with a nucleus of O PARALLEL C ¦R N-S- n WHERE N IS 2 TO 4 AND O PARALLEL C ¦ N- is a radical derived by removal of hydrogen from an imide of an acyclic dicarboxylic acid, from a monocarbonyl cyclic urea, from an imide in which nitrogen is linked to carbonyl by alkylene and from a monocarbonyl azole containing one other different hetero atom in the ring. R is alkylene, arylene, cycloalkylene, or residue from ester of mercapto lower fatty acid and polyhydric alcohol which compounds are inhibitors of premature vulcanization of diene rubbers. |