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:
Dec. 27, 1988
Filed:
May. 26, 1987
Dynamit Nobel Aktiengesellschaft, Troisdorf, DE;
Abstract
A process for producing fine-grained .beta.-HMX wherein a solution of .beta.-HMX is treated in a .gamma.-lactone in a temperature range of between 5.degree. and 15.degree. C. with toluene, and the desired fine and very pure .beta.-HMX crystals are precipitated. The resultant crystals have grain sizes of down to 5 .mu.m and exhibit an extremely small proportion of other modifications or forms of HMX. An additional aspect of the process resides in providing the very fine .beta.-HMX with a coating of a thermoplastic polymer. In this procedure, the .beta.-HMX particles, after having been separated from toluene, are made into a slurry in water and combined under agitation at temperatures of between 25.degree. and 60.degree. C. with a solution or suspension or emulsion of the thermoplastic polymer. During this step, granules are formed which can be separated after distillation of the solvent.