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US 2004/0006162 A1Published application
Alkylthio- and aryl(heteroyl)thio-substituted p-phenylenediamines, their manufacture and their use in rubber
AssigneeFlexsys America L.P.
InventorsOtto William Maender, Charles John Rostek, Alan Roy Katritzky, Herman Howard Odens, Michael Victor Voronkov
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Abstract
A composition comprising alkylthio- or aryl(heteroyl)thio-substituted p-phenylenediamine, its method of preparation, and its use as an antidegradant in natural or synthetic rubber.
Claims21
A composition useful as an antidegradant comprising alkylthio-, arylthio-, or heteroylthio-substituted p-phenylenediamines having the formula:
- 4
- Where:
- X and Y are the same and comprise NHR, where R is alkyl, cycloalkyl or aryl, or
- X and Y are different and selected from the group NH2, or NHR (where R is alkyl, cycloalkyl or aryl);
- and R′ is alkyl, cycloalkyl, aryl, alkyl 3-propionate, or a carbon based heterocycle containing at least one of S or N, or both S and N.
2 more elements
A process for the manufacture of alkylthio- or aryl(heteroyl)thio-substituted p-phenylenediamines comprising reacting a quinone diimine and a thiol in accordance with the following reaction equation:
- 5
- Where Z and W are the same and comprise NR or different and selected from the group NH, or NR with R and R′ the same or different and selected from the groups alkyl, cycloalkyl or aryl and where X and Y are the same and comprise NHR or different and selected from the groups NH2 or NHR.
Dependencies are inferred from the claim text.