Robert L Jensen

US Patent:

7812069, Oct 12, 2010

Filed:

Oct 20, 2008

Appl. No.:

12/254214

Inventors:

Philip J. Costanzo - San Luis Obispo CA, US
Robert E. Jensen - Newark DE, US

Assignee:

The United States of America as represented by the Secretary of the Army - Washington DC

International Classification:

C06B 23/00

US Classification:

523180

Abstract:

A reversible viscosity reducing polymer is provided that has a crosslinkage between subunits inclusive of a single Diels-Alder Such a reversible viscosity reducing polymer is particularly well suited as a matrix material for a heterogeneous propellant. A process for forming a reversible viscosity reducing polymer inclusive of a single Diels-Alder linkage includes reacting a native crosslinkable moiety with a crosslinker moiety having a Diels-Alder reactive moiety of a diene or dienophile to form a Diels-Alder reactive moiety capped polymer subunit. The Diels-Alder reactive moiety capped polymer subunit is then exposed to a Diels-Alder reactant inclusive of a complementary Diels-Alder reactive moiety where the reactant also includes at least one conventional crosslinkable moiety to form a crosslinkable moiety capped polymer subunit. Reaction of the crosslinkable moiety capped polymer subunit is then reacted with a conventional multifunctional crosslinking agent.

Address:

4536 Ridgedale Ave, Las Vegas, NV 89121

VIN:

4RACS08197K017685

Make:

Plymouth

Model:

Laser 3dr Hatchback RS T

Year:

2007