US 4,785,115 AGranted

Benzazole substituted terephthalic acid monomers

AssigneeThe United States of America as represented by the Secretary of the United States

InventorsTsu-Tzu Tsai, Fred E. Arnold

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Abstract

Provided are benzazole-substituted terephthalic acids of the formula ##STR1## wherein n is 1 or 2 and Q is ##STR2## wherein Z is --O-- or --S--. Also provided are methods for preparing the benzazole substituted terephthalic acid compounds.

Claims5

Dependent claims

A heterocyclic terephthalic acid of the formula ##STR8## wherein n is 1 or 2 and Q is ##STR9## wherein Z is --O--or --S--.

Dependencies are inferred from the claim text.

Facts

Application: 07/084,784Filed 13 Aug 1987
Granted: 15 Nov 1988
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

C07D 263/57
With only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached in position 2: aryl or substituted aryl radicals
C07D 263/64
Having two or more ring systems containing condensed 1,3-oxazole rings: linked in positions 2 and 2' by chains containing six-membered aromatic…
C07D 277/66
With only hydrocarbon or substituted hydrocarbon radicals attached in position 2: with aromatic rings or ring systems directly attached in position 2
C08G 73/18
Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule: polybenzimidazoles

Family

No related US applications are recorded in the indexed filing history.

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