MANUFACTURE OF PROPELLANT COMPOSITIONS AND PROPELLANT CHARGES
Assignee
SECRETARY OF STATE FOR DEFENCE IN HER MAJESTY'S GOVERNMENT OF THE UNITED KINGDOM OF GREAT BRITAIN AND NORTHERN IRELAND THE, WHITEHALL, LONDON SW1 2HB, ENGLAND A BRITISH CORP.
Filed
May 27, 1983
Granted
Mar 14, 2000
Location
LONDON GB
Abstract
This invention relates to the manufacture of composite propellants containing rubbery binders and particulate non-binder ingredients. The process consists of curing a mixture of a functionally-terminated hydro-carbon prepolymer and a cross-linking agent to form a viscoelastic first binder composition, mixing the binder with non-binder ingredients to form a plastic propellant, and rubberising at least a part of the plastic propellant by adding to it a further quantity of the cross-linking agent, provided the propellant is formed into a propellant charge while still in a plastic state. The further quantity of the cross-linking agent may be mixed in with the plastic propellant prior to forming, or applied to the surface of the plastic propellant after having been formed into a charge. In a preferred embodiment of the invention, the prepolymer consists of an hydroxy-terminated polybutadiene having a molecular weight of about 3000 and a functionally of about 2.2, and the cross-linking agent consists of isophorone diisocyanate.
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
Oct 17, 1983
Rescinded
Mar 18, 1997
Duration
13 years, 5 months
Inventor
- 1ROBERT J. BROWN
Record Details
- Patent number
- US 6036894
- Application
- 06500628
- Aerospace match
- No
- Dataset source
- 35 USC §181 SO records