Akzona Incorporated

Paul K Battey

Peter Hope

Manfred F Bergfeld

Ashutosh H Sharma

There are disclosed novel compounds of the formula: ##STR1## wherein n=0 or 1, R.sub.1 is selected from the group consisting of a hydrogen atom, straight chain and branched chain alkyl groups and alkoxy groups, and cycloalkyl groups and cycloalkoxy groups having 5 to 8 carbon atoms, R.sub.2 is selected from the group consisting of lower alkyl groups having 1 to 5 carbon atoms, X is an oxygen atom if n=0 or a nitrogen atom if n=1, Y is selected from the group consisting of a hydrogen atom, straight chain and branched chain alkyl groups having 1 to 18 carbon atoms, cycloalkyl groups having 5 to 8 carbon atoms, alkenyl groups having 3 to 18 carbon atoms, phenyl groups, alkylphenyl groups having 7 to 14 carbon atoms and aralkyl groups having 7 to 15 carbon atoms, and R.sub.3 is selected from the same group as Y, or together with X and Y forms part of a heterocyclic ring composed of 5 or 6 atoms in which X is the hetero-nitrogen atom. Also disclosed is the use of the foregoing compounds as stabilizers in rubber or rubber latex.

Rubber stabilizers derived from N-phenyl-p-phenylenediamine

Novel phosphoramidates of the general formula: ##STR1## wherein R, R' and R' represent certain specified substituent groups, are useful as stabilizing agents for organic materials, such as natural and synthetic rubbers and lubricating oils. The combined use of these compounds with certain sulfur-containing compounds shows a surprising synergistic effect.

Phosphoramidates containing a p-phenylenediamine group

An improved process for the preparation of para-nitroso-diphenyl-hydroxylamines is discussed. In the improved process the dimerizing rearrangement of a nitroso benzene is performed in the presence of at least 0.5 mole of a Lewis acid per mole of nitroso compound.

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Harrogate, United Kingdom

Paul K Battey