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. 20, 1987
Filed:
Apr. 30, 1985
Applicant:
Inventor:
Jerker Porath, S-18136 Lidingo, SE;
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08C / ;
U.S. Cl.
CPC ...
525380 ; 525157 ; 5253273 ; 527300 ; 527305 ; 527312 ; 536-3 ; 536 30 ; 536 45 ; 536 52 ; 556411 ; 556413 ;
Abstract
Heavy metals can be fixed to solid carriers to which an .alpha.-amino- or an .alpha.-iminohydroxamate ligand has been covalently bound. The ligand can have the structural formula ##STR1## wherein R.sub.1 and R.sub.2 represent H or an alkyl, or may be a compound of two or more hydroxamate substituents. The carrier can be formed of polysaccharides, polygalactanes, polyacrylates or silica dioxide. The adsorbent is prepared by an .alpha.-aminohydroxamate in an aqueous solution having a pH value of 4-9 being brought into contact with an aldehyde derivative of a carrier, followed by reduction with sodiumborohydride or sodiumcyanoborohydride.