Abstract: The present invention is directed to compounds represented by the formula I: wherein R1 comprises a hydrogen atom or an alkyl group having 1 to 2 carbon atoms; wherein R2 comprises an alkylene group, an arylene group, or a heterocyclic group; and wherein R3, R4, R5, R6, R7, and R8 are identical or different and comprise a hydrogen atom, an alkyl group, an aryl group, or an alkylaryl group.

Abstract: Methods of making antidegradant compounds are disclosed in which a p-phenylenediamine is reacted with a dicarbonyl to thereby obtain a diimine, which is reduced to obtain mixtures comprising the antidegradant compound.

Abstract: Methods of making antidegradant compounds are disclosed in which a p-phenylenediamine is reacted with a dicarbonyl to thereby obtain a diimine, which is reduced to obtain mixtures comprising the antidegradant compound.

Abstract: Methods of making antidegradant compounds are disclosed in which a p-phenylenediamine is reacted with a dicarbonyl to thereby obtain a diimine, which is reduced to obtain mixtures comprising the antidegradant compound.

Abstract: A compound represented by the formula: wherein R is selected from the group consisting of (i) substituted or unsubstituted alkyl with C=0 to 12 inclusive; (ii) substituted or unsubstituted aryl; and (iii) substituted and unsubstituted alkylaryl; wherein X1, X2, X3 and X4 are each selected from the group consisting of alkyl, aryl, alkylaryl groups and hydrogen; wherein R1, R2, R3, and R4 are each selected from the group consisting of alkyl, aryl, alkylaryl groups and hydrogen and R2 and R3 may optionally be bridged by a polymethylene group; wherein when C=0 in R, the combined group R1 R2 is the same as the combined group R3 R4; and wherein when C=1 in R, each of R1, R2, R3, and R4 are hydrogen.

Abstract: A compound represented by the formula: wherein R is selected from the group consisting of (i) substituted or unsubstituted alkyl with C=0 to 12 inclusive; (ii) substituted or unsubstituted aryl; and (iii) substituted and unsubstituted alkylaryl; wherein X1, X2, X3 and X4 are each selected from the group consisting of alkyl, aryl, alkylaryl groups and hydrogen; wherein R1, R2, R3, and R4 are each selected from the group consisting of alkyl, aryl, alkylaryl groups and hydrogen and R2 and R3 may optionally be bridged by a polymethylene group; wherein when C=0 in R, the combined group R1 R2 is the same as the combined group R3 R4; and wherein when C=1 in R, each of R1, R2, R3, and R4 are hydrogen.

Abstract: A compound represented by the formula: wherein each R is independently selected from the group consisting of (i) substituted or unsubstituted alkyl with C=0 to 12 inclusive; wherein X1, X2, X3 and X4 are each independently selected from the group consisting of alkyl, aryl, alkylaryl groups and hydrogen; wherein R1, R2, R3, and R4 are each independently selected from the group consisting of alkyl, aryl, alkylaryl groups and hydrogen; and wherein one of R1 and R2 and one of R3 and R4 may optionally be bridged by a polymethylene group to form a cycloalkyl; wherein when C=0 in R, the combined group R1 R2 is the same as the combined group R3 R4; and wherein when C=1 in R, each of R1, R2, R3, and R4 are hydrogen.

Abstract: Antidegradant compounds are disclosed, and methods of making them, that are represented by the formula I: wherein each X is independently selected from the group consisting of ethyl, methyl, or hydrogen. Also disclosed are diimine intermediates corresponding to formula III: wherein each X is independently selected from the group consisting of ethyl, methyl, or hydrogen. These intermediates themselves exhibit antidegradant activity.

Abstract: Methods of making antidegradant compounds are disclosed in which a p-phenylenediamine is reacted with a diol to obtain mixtures comprising the antidegradant compounds.

Abstract: A method of making antidegradant compounds is disclosed, in which a p-phenylenediamine is reacted with an alpha-hydroxy carbonyl compound to thereby obtain an enediamine, which is reduced to thereby obtain a mixture comprising the antidegradant compound.

Abstract: A compound represented by the formula: wherein R is selected from the group consisting of (i) substituted or unsubstituted alkyl with C=0 to 12 inclusive; (ii) substituted or unsubstituted aryl; and (iii) substituted and unsubstituted alkylaryl; wherein X1, X2, X3 and X4 are each selected from the group consisting of alkyl, aryl, alkylaryl groups and hydrogen; wherein R1, R2, R3, and R4 are each selected from the group consisting of alkyl, aryl, alkylaryl groups and hydrogen and R2 and R3 may optionally be bridged by a polymethylene group; wherein when C=0 in R, the combined group R1 R2 is the same as the combined group R3 R4; and wherein when C=1 in R, each of R1, R2, R3, and R4 are hydrogen.

Abstract: Methods of making antidegradant compounds are disclosed in which a p-phenylenediamine is reacted with a dicarbonyl to thereby obtain a diimine, which is reduced to obtain mixtures comprising the antidegradant compound.

Abstract: Antidegradant compounds are disclosed, and methods of making them, that are represented by the formula I: wherein each X is independently selected from the group consisting of ethyl, methyl, or hydrogen. Also disclosed are diimine intermediates corresponding to formula III: wherein each X is independently selected from the group consisting of ethyl, methyl, or hydrogen. These intermediates themselves exhibit antidegradant activity.

Abstract: Methods of making antidegradant compounds are disclosed in which a p-phenylenediamine is reacted with a diol to obtain mixtures comprising the antidegradant compounds.

Abstract: A compound represented by the formula: wherein each R is independently selected from the group consisting of (i) substituted or unsubstituted alkyl with C=0 to 12 inclusive; wherein X1, X2, X3 and X4 are each independently selected from the group consisting of alkyl, aryl, alkylaryl groups and hydrogen; wherein R1, R2, R3, and R4 are each independently selected from the group consisting of alkyl, aryl, alkylaryl groups and hydrogen; and wherein one of R1 and R2 and one of R3 and R4 may optionally be bridged by a polymethylene group to form a cycloalkyl; wherein when C=0 in R, the combined group R1 R2 is the same as the combined group R3 R4; and wherein when C=1 in R, each of R1, R2, R3, and R4 are hydrogen.

Abstract: A method of making antidegradant compounds is disclosed, in which a p-phenylenediamine is reacted with an alpha-hydroxy carbonyl compound to thereby obtain an enediamine, which is reduced to thereby obtain a mixture comprising the antidegradant compound.

Abstract: A compound represented by the formula: wherein R is selected from the group consisting of (i) substituted or unsubstituted alkyl with C=0 to 12 inclusive; (ii) substituted or unsubstituted aryl; and (iii) substituted and unsubstituted alkylaryl; wherein X1, X2, X3 and X4 are each selected from the group consisting of alkyl, aryl, alkylaryl groups and hydrogen; wherein R1, R2, R3, and R4 are each selected from the group consisting of alkyl, aryl, alkylaryl groups and hydrogen and R2 and R3 may optionally be bridged by a polymethylene group; wherein when C=0 in R, the combined group R1 R2 is the same as the combined group R3 R4; and wherein when C=1 in R, each of R1, R2, R3, and R4 are hydrogen.

Abstract: A process for producing amino or amido substituted aromatic azo or hydrazo compounds, or aminoaromatic amines, or aminoaromatic amides, or mixtures thereof, comprises the steps of:

Abstract: A hydroxydiphenylamine compound can be converted to an N-phenylquinoneimine by reacting the hydroxydiphenylamine with oxygen or an oxygen containing gas in the presence of a modified activated carbon catalyst, the catalyst having had surface oxides removed therefrom.

Abstract: A process for the manufacture of a sulfenimide by reacting sulfenamide in slurry with a water immiscible organic solvent with an acid to yield a solvent slurry comprising sulfenimide product. The product is recovered from the solvent slurry by a method comprising the addition of water to the solvent slurry and the isolating of the product by a single filtration step. While water is added to the solvent slurry an azeotrope of solvent and water may be distilled under vacuum until substantially all solvent is separated from product and product becomes part of an aqueous slurry. Alternatively, water may be added to the solvent slurry while the resulting mixture is being agitated, followed by filtering the mixture in the single filtration step for recovery of product from the mixture.