Synthesis of polyquinoline by the catalytical dehydrogenative polymerization of tetrahydroquinoline
AssigneeExxon Research & Engineering Co.
InventorsLong Y. Chiang, Russell R. Chianelli
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Abstract
A new method for the preparation of polyquinoline is discovered. Upon the treatment of tetrahydroquinoline (THQ) with ReS.sub.2+x at the refluxing temperature of THQ, a nearly quantitative yield of polyquinoline is obtained and characterized.
Claims9
A process for polymerizing at least one aromatic nitrogen heterocyclic compound selected from the group consisting of tetrahydroquinoline, 3-mono-organo-substituted trihydroquinoline, 4-mono-organo-substituted trihydroquinoline and 3,4-di-organo-substituted dihydroquinoline wherein said organo-substituent is selected from alkyl or aryl groups, which process comprises heating at least one said compound in the presence of a metal sulfide catalyst wherein the metal is selected from the group consisting of transition metals of Groups VI, VII and VIII of the periodic table or mixtures thereof.
A polymer consisting essentially of recurring non-substituted polyquinoline moieties represented by the formula:
- ##STR3## wherein x is an integer .gtoreq.2.
A polymer consisting essentially of recurring non-substituted polyquinoline moieties represented by the formula:
- ##STR4## wherein x is an integer .gtoreq.2.
Dependencies are inferred from the claim text.