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AssigneesNissan Motor Co., Ltd., Japan Synthetic Rubber Co., Ltd.
InventorsDaizo Fukuma, Shigeru Suzuki, Kensho Shirota, Kunihiro Harada
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The present invention is a binder for a polydiene composite propellant comprising a small amount of binder and has as its object the production of the binder, which can provide stable physical properties between production lots and has a long pot life, and consists mainly of a polymer which has a predetermined molecular weight between crosslinks and which is obtained by reacting a combination of a polydiene glycol having a hydroxyl group number of 1.8-2.1 and a number average molecular weight of 1,000-5,000, a trifunctional crosslinking agent, a diisocyanate and a bifunctional chain extender. When a diene polymer having a functional group number of not more than 1 is additionally added to the above described combination, the elongation of the binder is improved and the use of a plasticizer can be reduced or eliminated.
A binder for a polydiene composite propellant obtained by reacting a polydiene glycol having a hydroxyl group number of 1.8-2.1 and a number average molecular weight of 1,000-5,000 with a trifunctional crosslinking agent, a diisocyanate and a bifunctional chain extender;
A binder for polydiene composite propellant obtained by reacting a polydiene glycol having a hydroxyl group number of 1.8-2.1 and a number average molecular weight of 1,000-3,500 with a polydiene polymer having a functional group number of not more than 1, a trifunctional crosslinking agent, a diisocyanate and a bifunctional chain extender;
Dependencies are inferred from the claim text.