DR. JAMES KING BYRD, M.D.
Osteopathic Medicine at Lowell Dr, Huntsville, AL

4600732, Jul 15, 1986

Dec 16, 1983

6/562332

Kenneth E. Junior - Madison AL
James D. Byrd - Huntsville AL
James O. Hightower - Huntsville AL

Thiokol Corporation - Chicago IL

C08K 336, C08K 322

523138

An elastomeric composition suitable for use as a rocket motor case insulation is disclosed. The composition comprises a vulcanizable elastomeric material and reinforcing polybenzimidazole polymer fibers in combination with a powder filler. A preferred embodiment utilizes polyisoprene as the elastomer and silica as the powder filler. These compositions have better erosion resistance than asbestos-reinforced compositions, and do not pose the environmental or safety risks associated with asbestos-reinforced insulation.

4803019, Feb 7, 1989

Feb 10, 1984

6/579222

William H. Graham - Huntsville AL
Kenneth E. Bevel - Grant AL
James D. Byrd - Huntsville AL
Kenneth E. Junior - Madison AL
Inella G. Shepard - Huntsville AL

Morton Thiokol, Inc. - Chicago IL

C06B 2100

264 31

Process for forming a liner and cast propellant charge in a rocket engine casing without separately precuring the liner, comprising the steps of providing a blocked curable liner composition which is the reaction product of a prepolymer, an isocyanate curing agent, and a blocking agent; applying the liner composition to an internal surface of a rocket casing; preheating the casing and liner assembly to simultaneously prepare the assembly for receiving a propellant, unblock the liner, and precure the liner to a tacky state; casting the propellant change into interfacial contact with the liner; and cocuring the liner and propellant compositions. The blocked, curable liner composition has a very long pot life which is terminated by heating the composition sufficiently to uncouple the blocking agent from the isocyanate curing agent and initiate a rapid cure. The liner composition does not require precuring, as it is unblocked by preheating the liner and rocket casing sufficiently to receive to cast propellant. The blocked liner composition has the following structure.

5762746, Jun 9, 1998

Aug 16, 1989

7/394706

James A. Hartwell - Elkton MD
Dale E. Hutchens - Huntsville AL
Kenneth E. Junior - Madison AL
James D. Byrd - Huntsville AL

Thiokol Corporation - Ogden UT

B32B 3100

156293

A composition consisting essentially of a polyphosphazene binder having the following repeating units: ##STR1## wherein n is from about 20 to about 50,000, A is selected from --O-- and --NH--, and R. sup. 1 and R. sup. 2 are independently selected from alkyl having from one to about 20 carbon atoms, aryl having from 6 to about 14 carbon atoms, alkaryl having from 7 to about 30 carbon atoms, any of the preceding moieties substituted with halogen, hydroxyl, alkoxy, aryloxy, or nitro groups, or any of the preceding moieties linked by ether or amine linkages. Combined with an organic fiber filler, this material provides an erosion resistant insulation composition for temporarily protecting the interior of a rocket motor combustion chamber from thermal damage while the rocket is firing. Provided as a barrier coating or layer between the propellant grain and other structures within a rocket motor, this material prevents migration of plasticizers, nitrate esters, and other fluid or mobile ingredients from the propellant grain.

4337218, Jun 29, 1982

Oct 15, 1980

6/197035

James D. Byrd - Huntsville AL
Lamar Field - Nashville TN

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

C06B 2100, C06B 4510

264 3R

A mechanical method of case bonding a solid propellant to a rocket motor e wherein a coating of a liner material is first applied to the internal surface of a rocket motor case. While the liner material is uncured a mechanical structural material selected from wire grid, wire hooks, rubber spikes, steel wool, metal grid, polyamide material, or polypropylene material is embedded in the liner material but allowed to protrude above the liner material. The liner material is allowed to cure, and an uncured propellant composition is cast against the cured liner and allowed to flow around the protruding mechanical structural material. On curing, the propellant composition attaches itself to both the liner and the mechanical structural material. The combination of the liner material, the mechanical reinforcing material, and the propellant composition provides a mechanical reinforcement in the propellant which is held in place with improved tensile adhesion against the rocket motor case wall.

4736684, Apr 12, 1988

Jan 16, 1986

6/820578

James D. Byrd - Huntsville AL
Robert T. Davis - Huntsville AL

Thiokol Corporation - Chicago IL

C06B 2100

102290

Improved composition, curable to form a rocket engine liner. The uncured liner composition has a long pot life and cures rapidly. The composition comprises a hydroxyl terminated polybutadiene prepolymer; a diisocyanate curing agent for forming urethane linkages with said prepolymer; a trifunctional aziridine bond promoter; a filler; and a curing catalyst comprising maleic anhydride, magnesium oxide, and triphenyl bismuth.

4492779, Jan 8, 1985

Dec 7, 1981

6/328333

Kenneth E. Junior - Madison AL
James D. Byrd - Huntsville AL

Thiokol Corporation - Chicago IL

C08K 340, C08K 336, C08K 322

523138

An elastomeric composition suitable for use as a rocket motor case insulation is disclosed. The composition consists of a vulcanizable elastomeric composition and reinforcing aramid polymer fibers in combination with a powder filler. A preferred embodiment utilizes polyisoprene as the elastomer, KELVAR. RTM. fibers as the aramid polymer fibers, and silica as the powder filler.

4429634, Feb 7, 1984

Mar 12, 1980

6/129542

James D. Byrd - Huntsville AL
James O. Hightower - Huntsville AL

Thiokol Corporation - Chicago IL

F42B 100

102290

Bonding of hydroxy terminated polybutadiene based propellant grains to rocket motor liners and of the liner to the motor case is greatly improved by incorporating an aziridine in a urethane cured hydroxy terminated polybutadiene based liner.

4601862, Jul 22, 1986

Jul 1, 1985

6/750209

James D. Byrd - Huntsville AL
Robert T. Davis - Huntsville AL

Morton Thiokol, Inc. - Chicago IL

C06B 2100

264 31

An improvement to the process of applying a rocket motor liner to an inside surface of a rocket motor casing by coating the casing with a rocket motor liner composition and then curing the liner composition. Typical rocket motor liner compositions include the product of a hydroxyl-terminated polybutadiene prepolymer; a diisocyanate curing agent for forming urethane linkages with said prepolymer; a trifunctional aziridine bond promoter; a filler; and a curing catalyst comprising maleic anhydride, magnesium oxide, and triphenyl bismuth. This invention may use an alkaline carbon black filler and/or a curing catalyst which does not include magnesium oxide.