Crosslinked polydithiocarbamate, synthesis thereof, and use for removing heavy metals
AssigneeKing Fahd University of Petroleum and Minerals
InventorsOthman Charles Sadeq Al Hamouz, Mohammed Estatie, Tawfik Abdo Saleh Awadh
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Abstract
Crosslinked polydithiocarbamates based on 1,3,5-triazinane cores linked to pyrrole-dithiocarbamates via alkyl chains. A process for preparing these crosslinked polydithiocarbamates via a Mannich-type polycondensation of diaminoalkane, paraformaldehyde and a pyrrole compound, which is followed by additional modification of the pyrrole moiety to a pyrrole-dithiocarbamate. A method for removing heavy metals, such as Cd(II) from an aqueous solution or an industrial wastewater sample with these crosslinked polydithiocarbamates is also described.
Claims20
A crosslinked polydithiocarbamate of Formula (I)
- or a salt thereof, a solvate thereof, a tautomer thereof, a stereoisomer thereof, or a mixture thereof;
- wherein, R1 is selected from the group consisting of a hydrogen, an optionally substituted alkyl, an optionally substituted cycloalkyl, an optionally substituted aryl, and an optionally substituted arylalkyl;
- each R2 is independently selected from the group consisting of a hydrogen, an optionally substituted alkyl, an optionally substituted cycloalkyl, an optionally substituted alkoxy, an optionally substituted aryl, an optionally substituted arylalkyl, an optionally substituted aryloxy, and a halogen;
- R3 is selected from the group consisting of a hydrogen, an optionally substituted alkyl, an optionally substituted cycloalkyl, an optionally substituted aryl, and an optionally substituted arylalkyl;
- X is an alkali metal cation;
- n is a positive integer in the range of 2-16;
- m is a positive integer in the range of 2-10000;
- A1 forms a bond to A2 of another monomer unit;
- and
- each A3 is independently a hydrogen, or forms a bond to A1 of another monomer unit.
Dependencies are inferred from the claim text.