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:
Nov. 07, 1978
Filed:
May. 22, 1978
Applicant:
Inventor:
Larry D Henderson, Bryans Road, MD (US);
Assignee:
The United States of America as represented by the Secretary of the Navy, Washington, DC (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D / ; C07C / ; C07C / ;
U.S. Cl.
CPC ...
203 56 ; 203 51 ; 203 63 ; 203 37 ; 2605 / ;
Abstract
A process for extracting essentially pure unsymmetrical dimethyl hydrazine UDMH) from a solution containing UDMH, water, and other volatiles and non-volatiles, comprises charging a distillation stillpot with the UDMH solution, mixing into the solution sufficient caustic sodium hydroxide so as to cause the solution to separate into a two layer system, mixing isopropanol into the two layer system, and distilling off the essentially pure UDMH distillate.