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US 11,306,683 B2Granted
Precursor compositions for an insulation and insulated rocket motors
AssigneeNorthrop Grumman Systems Corporation
InventorsHimansu M. Gajiwala, Steven B. Hall
Life of this patent
Estimating the term…
Abstract
A precursor composition comprising, before curing, ethylene propylene diene monomer (EPDM), zinc oxide, silica, polymerized 1,2-dihydro-2,2,4-trimethylquinoline, a solid chlorinated paraffin, stearic acid, a five carbon petroleum hydrocarbon, trimethylolpropane trimethacrylate, and a peroxide. A rocket motor including a reaction product of the precursor composition and a method of insulating a rocket motor.
Claims23
A precursor composition, comprising, before curing:
- ethylene propylene diene monomer (EPDM), zinc oxide, silica, a solid chlorinated paraffin, an antioxidant, a processing aid, a plasticizer, a coagent, and a curative.
A precursor composition, comprising, before curing:
- ethylene propylene diene monomer (EPDM), zinc oxide, silica, a solid chlorinated paraffin, stearic acid, an antioxidant, a plasticizer, a coagent, and a peroxide.
A rocket motor, comprising:
- a case, an insulation on at least a portion of the case, and a propellant in the case, the insulation comprising:
- a reaction product of ethylene propylene diene monomer (EPDM), zinc oxide, silica, a solid chlorinated paraffin, an antioxidant, a processing aid, a plasticizer, a coagent, and a curative.
Dependencies are inferred from the claim text.