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. 08, 2000
Filed:
Apr. 26, 1994
Robert B Wardle, Logan, UT (US);
W Wayne Edwards, Tremonton, UT (US);
Cordant Technologies, Inc., Salt Lake City, UT (US);
Abstract
Energetic polymers and methods for their synthesis are provided. The polymers are preferably produced from cyclic ether monomers having 4 or 5 member rings. The cyclic ether monomers preferably include energetic functional groups such that a polymer formed from the monomer is itself energetic. Polymerization is catalyzed by a combination of alkylating salt and alcohol. The preferred salts are triethoxonium salts with anions such as hexafluorophosphate, hexachloroantimonate, and tetrafluoroborate. It is found that by employing the combination of selected triethoxonium salts and selected alcohols that it is possible to produce an energetic polymer with predetermined functionality and molecular weight. The salt is found to scavenge water in the reaction mixture, thus increasing control over the functionality of the final product. The salt-alcohol combination also rapidly initiates polymerization and allows higher molecular weights to be achieved. This is particularly important in that one limitation previously experienced in polymerization of the types of monomers used in this invention was an inability to achieve rapid and complete polymerization.