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US 7,745,633 B1Granted
Tetrazole based linear polymers
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorsDavid J. Irvin, Mark H. Mason
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Abstract
A linear isocyanate polymer produced by utilizing an effective amount of tetrazole diol or tetrazole polyol, reacting with an effective amount isocyanate resin, and cooling to room temperature producing a linear polyisocyanate polymer.
Claims5
A process for preparation of a polymer of structure (VII) comprising:
- reacting an isocyanate resin with an effective amount of tetrazole diol of structure (II),
- wherein “X” is an alkyl, aryl, or oligoether group, wherein “R” is an alkyl, aryl, or oligoether group, wherein “R” is chemically bonded to N1 or N2, at a temperature from about 50° C. to about 100° C. from about 1 hour to about 48 hours;
- wherein said isocyanate resin is of structure (VIII), wherein “Y” is an alkyl, aryl, or oligoether group, wherein “m” is 2-9,
- cooling to room temperature;
- and,
- extracting a linear polyisocyanate polymer of structure (VII)
- wherein “X” is an alkyl, aryl, or oligoether group, wherein “Y” is an alkyl, aryl, or oligoether group, wherein “m” is 2 to 9, wherein “p” is 5 to 10,000, wherein “R” is an alkyl, aryl, or oligoether group, wherein “R” is chemically bonded to N1 or N2 of said polymer of structure (VII).
4 more elements
Dependencies are inferred from the claim text.