The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 21, 1990
Filed:
Sep. 05, 1989
Applicant:
Inventor:
J B Canterberry, Crawfordville, FL (US);
Assignee:
Olin Corporation, Cheshire, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C06B / ;
U.S. Cl.
CPC ...
179 10 ; 149 11 ; 1491096 ; 102290 ; 264-34 ;
Abstract
Method for producing novel deterred granular nitrocellulose propellant powder compositions having a stable burn rate gradient. The invention comprises coating nitrocellulose propellant granules with a minor amount by weight of a polycaprolactone polymer which is soluble in nitrocellulose under conditions which cause the polymer to be gradually dissolved into the granules to produce maximum burn deterrence at the surface of the granules which gradually decreases inwardly therefrom to produce a desired burn rate gradient in the granules.