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:
Oct. 05, 1999
Filed:
Feb. 06, 1998
Nikolai N Ponomarev-Stepnoy, Moscow, RU;
Vladimir A Pavshook, Moscow, RU;
Grigoriy F Bebikh, Moscow, RU;
Vladimir Ye Khvostionov, Moscow, RU;
Peter S Trukhlyaev, Moscow, RU;
Ivan K Shvetsov, Moscow, RU;
Yelena L Vandysh, Moscow, RU;
TCI Incorporated, Albuquerque, NM (US);
Abstract
A polymer sorbent for the extraction of Mo-99 from the fission byproducts of a uranyl sulfate nuclear-fueled homogeneous-solution nuclear reactor and the method of producing the sorbent are described. This sorbent is produced from a maleic anhydride copolymer and .alpha.-benzoin-oxime. The sorbent is produced by reacting a mixture of maleic anhydride copolymer, a bifunctional organic compound (hydrochinon, diethyleneglycol, hexamethylene diamine, glycerol, ethyleneglycol), and .alpha.-benzoin-oxime in the ratio of 1:(0.25-0.50):(0.75-0.5) in a polar organic solvent (dioxane, dimethyl formamide, or toluene) in the temperature range of 90.degree.-95.degree. C. with constant stirring for 1 to 2 hours. The resultant product is then cooled to room temperature and flushed 3-5 times with cold water. A white stringy product results. This is dried and crushed. Particles of 1-2 mm in diameter are selected for the solid sorbent.