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. 28, 1979
Filed:
May. 02, 1973
Applicant:
Inventors:
Thomas P Rudy, Saratoga, CA (US);
Toshio W Nakagawa, San Jose, CA (US);
Assignee:
United Technologies Corporation, E. Hartford, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
252414 ; 2524 / ; 252438 ; 252467 ; 252472 ; 149 194 ; 149 42 ; 149 76 ; 1491096 ;
Abstract
Combustion catalysts for solid propellants are extracted with a solution comprising a solvent in which the catalyst is essentially insoluble and a solute which is an effective chelating agent for metal ions which are present as interfering impurities in the combustion catalysts. This treatment does not affect the activity of the catalyst as a combustion catalyst in a solid propellant; however, the removal of the metal ions greatly increases the pot life of the solid propellant composition prior to cure and enhances its stability after cure.