US 5,633,337 AGranted

Aromatic benzobisazole polymers and copolymers incorporating diphenylamino moieties

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

InventorsLoon-Seng Tan, Kasturi R. Srinivasan

Life of this patent

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Abstract

A polymer having repeating units of the formula: ##STR1## wherein Q is ##STR2## wherein X is --NH--, --S-- or --O--. A copolymer having repeating units of the formula: ##STR3## wherein x has a value of 0.01 to 0.99 and Q is ##STR4## wherein X is --NH--, --S-- or --O--.

Claims8

Dependent claims

A polymer having repeating units of the formula:

##STR13## wherein Q is ##STR14## wherein X is --NH--, --S-- or --O--.

Dependencies are inferred from the claim text.

Facts

Application: 08/613,787Filed 23 Feb 1996 · continuation in part
Priority: 26 Jan 1995
Granted: 27 May 1997
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

C07C 229/60
With amino and carboxyl groups bound to carbon atoms of the same non-condensed six-membered aromatic ring: with amino and carboxyl groups bound in…
C07C 255/51
To carbon atoms of non-condensed six-membered aromatic rings: containing at least two cyano groups bound to the carbon skeleton
C07C 255/53
Having cyano groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton: containing cyano groups and hydroxy groups bound to…
C07C 255/58
Having cyano groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton: containing cyano groups and singly-bound nitrogen…

Family

Serial380,175Parent of this continuation-in-part · filed 26 Jan 1995
US 5,536,866 AParent of this continuation-in-part · filed 16 Jul 1996
US 5,633,337 AThis patent

From the US filing history. Foreign family members aren’t listed.

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