Hydroxy-pendent benzoxazole copolymers
AssigneeThe United States of America as represented by the Secretary of the Air Force
InventorsFred E. Arnold, Jom P. Chen
Life of this patent
Estimating the term…
Abstract
Alcohol-soluble, aromatic heterocyclic copolymers having repeating units of the formula: ##STR1## wherein x has a value of 0.10 to 0.90 and y has a value of 1.0-x. These copolymers are useful in the preparation of organic/inorganic hybrid materials having transparency which comprise the sol-gel derived, hydrolytically condensed reaction product of a metal alkoxide of the formula M(OR).sub.w wherein R is a lower alkyl group, M is Si, Ti, Al or a mixture thereof, and w is the valence value of M, and the above copolymer.
Claims8
An aromatic heterocyclic copolymer having repeating units of the formula:
- ##STR4## wherein x has a value of 0.10 to 0.90 and y has a value of 1.0-x.
An organic/inorganic hybrid material having transparency which comprises the sol-gel derived, hydrolytically condensed reaction product of a metal alkoxide of the formula M(OR).sub.w wherein R is CH.sub.3 or --C.sub.2 H.sub.5, M is Si, Ti, Al or a mixture thereof, and w is the valence value of M, and a copolymer having repeating units of the formula:
- ##STR5## wherein x has a value of 0.10 to 0.90 and y has a value of 1.0-x.
Dependencies are inferred from the claim text.