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:
May. 21, 1985
Filed:
Jul. 13, 1984
Applicant:
Inventors:
Maurice R Smith, Cleveland, TN (US);
Harvey B Cochran, Englewood, TN (US);
Assignee:
Olin Corporation, Cheshire, CT (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528 48 ; 528 68 ;
Abstract
A novel process is provided for producing a poly(dithiocarbamate) resin chelating agent which comprises dissolving a polyimine in an alcohol solvent to form a polyimine solution. A polyisocyanate is admixed in the polyimine solution to produce a cross-linked polyamine-polyurea precursor resin. The cross-linked polyamine-polyurea precursor resin is then reacted with a mixture of NH.sub.4 OH and CS.sub.2 to produce a poly(dithiocarbamate) resin chelating agent. The novel process can employ a polyimine in anhydrous or aqueous suspension form and uses non-hazardous solvents for the polyisocyanate reactant.