US 7,517,997 B1
Process for making tetrazole based cross-linked polymers
David J. Irvin, Ridgecrest, Calif. (US); and Mark H. Mason, Inyokern, Calif. (US)
Assigned to The United States of America as represented by the Secretary of the Navy, Washington, D.C. (US)
Filed on May 27, 2005, as Appl. No. 11/151,181.
Int. Cl. C07D 257/04 (2006.01)
U.S. Cl. 548—250 20 Claims
 
1. A process for preparation of a polymer of structure (I) comprising:

OG Complex Work Unit Drawing
wherein “X” is an alkyl group, wherein “Y” is an alkyl group, wherein “p” is about 5 to about 10,000, wherein “R” is an alkyl group, wherein “n” is 2-9, wherein “m” is 2-9, wherein “R” is chemically bonded to N1 or N2 position;
reacting an isocyanate resin with an effective amount of a tetrazole polyol of structure (II), wherein “R” is an alkyl group, wherein “n” is 2-9;

OG Complex Work Unit Drawing
at about 50° C. to about 100° C. for about 1 hour to about 24 hours allowing contact of reactant;
said isocyanate resin of structure (III), wherein “Y” is an alkyl group, wherein “m” is 2-9;

OG Complex Work Unit Drawing
and
cooling to room temperature;
extracting a cross-linked polyisocyanate polymer of structure (I).