Accession Number : ADD000295

Title :   Urethane Propellant Composition.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Greenberg,Harold L

Report Date : 07 May 1974

Pagination or Media Count : 2

Abstract : The present invention relates to improved high energy propellant compositions and to the preparation thereof. It is an object of the present invention to provide an improved propellant grain which will not crystallize or embrittle at temperatures below 0F., and which have good resistance to thermal aging up to 180F. for use in rocket motors operational at extreme temperature ranges. The propellant comprises an inorganic oxidizer such as ammonium perchlorate, a metal fuel such as aluminum, and an improved urethane binder formed by the condensation of certain mixtures of polyether glycols (principally polytetramethylene ether glycol) with organic diisocyanates or nitrodiisocyanates, crosslinked with polyfunctional hydroxyl compounds and plasticized with phosphate esters (such as octyl diphenyl phosphate) or adipate, azelate, and sebacate esters and/or nitroplasticizers.

Descriptors :   *Patents, *Solid rocket propellants, Ammonium perchlorate, Isocyanate plastics, Aluminum, Glycols

Subject Categories : Solid Rocket Propellants

Distribution Statement : APPROVED FOR PUBLIC RELEASE