Propellant plasticizer
First Claim
1. A solid propellant for use in a rocket motor comprising a mixture of:
- a fuel;
an oxidizer for combusting said fuel;
a binder for holding said fuel and said oxidizer comprising hydroxy-terminated polybutadiene;
a nonmigrating plasticizer attaching to said binder and having the structural formula;
##STR2## a bonding agent;
a curing agent comprising a polyisocyanate; and
a cure catalyst to react with said curing agent to solidify said mixture.
1 Assignment
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Accused Products
Abstract
A plasticizer for propellant compositions is 2-hydroxy-3-butoxypropyl oleate. The plasticizer can be incorporated into propellants which conventionally include a binder fuel component, oxidizer component, isocyanate curing agent as well as other conventional components as desired such as bonding agents, curing catalysts and ballistic modifiers. Specifically, a preferred propellant having the internal plasticizer therein includes ammonium perchlorate oxidizer, HTPB binder, aluminum powder fuel, isophorone diisocyanate curing agent, a bonding agent and a delayed quick-cure catalyst. The migration of the plasticizer is substantially reduced so as to extend the shelf-life of rocket motors having the plasticized propellant therein.
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Citations
3 Claims
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1. A solid propellant for use in a rocket motor comprising a mixture of:
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a fuel; an oxidizer for combusting said fuel; a binder for holding said fuel and said oxidizer comprising hydroxy-terminated polybutadiene; a nonmigrating plasticizer attaching to said binder and having the structural formula;
##STR2## a bonding agent;
a curing agent comprising a polyisocyanate; anda cure catalyst to react with said curing agent to solidify said mixture. - View Dependent Claims (2, 3)
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Specification